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1

Assessment of ovarian tumors using transvaginal color Doppler ultrasonography.  

PubMed

In our study we used transvaginal color Doppler ultrasonography in a token of 127 women presenting with unilateral ovarian tumor. The characteristics of the tumors were analyzed, the presence of vascularization was checked and the resistance index (RI) was calculated. Consequently, based on a concrete scoring system, we attempted to discriminate these tumors as benign or malignant. It was proven that 24 of 127 ovarian tumors were malignant. Transvaginal color Doppler correctly identified 21 of the 24 malignant tumors, as well as 94 of the 103 benign tumors. In nine other cases we had false-positive results. The sensitivity and the specificity of the method was 87.5% and 91.2%, while the positive and negative predictive values were 70% and 96.9%, respectively. PMID:15493173

Daskalakis, G; Kalmantis, K; Skartados, N; Thomakos, N; Hatziioannou, L; Antsaklis, A

2004-01-01

2

Transvaginal ultrasonography of nongynecologic pelvic lesions.  

PubMed

Transvaginal ultrasonography (TVUS) is one of the preferred imaging modalities in patients with gynecologic problems because of its high diagnostic accuracy, noninvasiveness, and wide availability. In endovaginal scanning, the problem of sonic attenuation is much less significant than with the transabdominal approach in the evaluation of the viscera in the true pelvis. Placement of high-frequency, high-resolution probes within the vagina allows accurate assessment of all anatomic structures of the female reproductive tract within the pelvis, and, incidentally, a variety of pathologic conditions affecting the intestinal tract, the urinary system, the pelvic walls, vessels, lymph nodes, and peritoneum can be assessed by this technique. In this article, we show the appearances of nongynecologic lesions of the female pelvis as imaged with TVUS and discuss the clinical indications to this kind of study and the role of TVUS in guiding interventional maneuvers through the vaginal vault. All endovaginal scans were taken with transducers at frequencies of 5.0-7.5 MHz. PMID:11503096

Serafini, G; Gandolfo, N; Gandolfo, N; Gazzo, P; Martinoli, C; Derchi, L E

2001-01-01

3

Transvaginal ultrasonography associated with colour Doppler energy in the diagnosis of hydrosalpinx  

Microsoft Academic Search

The aims of this prospective study were to investigate the accuracy of B-mode transvaginal ultrasonography alone, using the typical finding of the presence of an elongated shaped mass with incomplete septa, in the screening of hydrosalpinx in women undergoing surgery for gynaecolo- gical diseases, and to determine the predictive value of this method combined with colour Doppler energy (CDE) imaging

S. Guerriero; S. Ajossa; M. P. Lai; A. M. Paoletti; G. B. Melis

2000-01-01

4

[Transvaginal ultrasonography and nuclear magnetic resonance. Comparison of techniques in the evaluation of ovarian lesions].  

PubMed

A total of 53 patients were included in this study, aged between 21 and 72 years old and hospitalised with the diagnosis of ovarian tumour. All patients underwent a clinical examination, ultrasonography and NMR prior to surgery. The findings of ultrasonography and NMR were correlated with histological results in order to evaluate the value of these methods in the differential diagnosis of benign and malignant ovarian tumours. Histological tests revealed 46 benign tumours, 3 borderline cases and 4 malignant growths. Transvaginal ultrasonography revealed precisely 47 out of 53 ovarian tumours, and NMR 49 out of 53. The main limitation of both techniques was the tendency to overestimate ovarian lesions (specificity: ultrasonography 89%, NMR 93%). As far as concerns the identification of malignant lesions NMR does not appear to offer significant advantages in comparison to ultrasonography (sensitivity 85% ultrasonography = NMR). PMID:7854561

Mascaretti, G; Carta, G; Renzi, E; Peluzzi, C; Bonitatibus, A; Di Francesco, C L; Patacchiola, F; Moscarini, M

1994-11-01

5

Transvaginal ultrasonography and hysteroscopy as predictors of endometrial polyps in postmenopause.  

PubMed

The study compared ultrasound and ambulatorial hysteroscopy as diagnostic methods detecting endometrial polyps in postmenopause women. 281 women aged 41-82 years who underwent ambulatorial hysteroscopy were analyzed for presence of uterine bleeding and/or altered transvaginal ultrasound (endometrial thickness ?5 mm). Ultrasonography detected endometrial polyps in 22.8% of patients and endometrial thickening in the other 59.8%. Hysteroscopy diagnosed endometrial polyps in 80.8%. Ultrasonography showed sensitivity of 88.7%, specificity of 25.4%, positive predictive value of 81.7%, negative predictive value of 37.5% and accuracy of 75.4% in diagnosing endometrial polyps. Hysteroscopy showed 96.4% sensitivity, 74.6% specificity, 93.4% positive predictive value, 84.6% negative predictive value and 91.8% accuracy. Hysteroscopy demonstrated more accuracy than ultrasonography, which is not sufficient for accurate diagnosis. PMID:25581053

de Godoy Borges, Pítia Cárita; Dias, Rogério; Bonassi Machado, Rogério; Borges, João Bosco Ramos; Spadoto Dias, Daniel

2015-01-01

6

Endometrial abnormalities on transvaginal ultrasonography and histopathology in women after quinacrine sterilization  

PubMed Central

Objective: To describe endometrial abnormalities on transvaginal ultrasonography and histopathology in women after quinacrine sterilization. Methods: It was an analytical cross sectional study conducted during February 2012 to April 2013. The sample size calculated at 95% confidence level was 540. Sampling technique used was simple random sampling. The medical history, examination, transvaginal ultrasonography and biopsy of suspected lesion was performed in quinacrine sterilized women. Results: The calculation of statistics showed the mean age at quinacrine sterilization was 38.5 years, standard deviation 6.517, and standard error 0.461. The endometrium was regular and smooth with homogenous images in 86% (n= 466), irregular endometrium with heterogeneous images on transvaginal ultrasound in 9.4% (n =51) and endometrial growth with high level echoes in 4.2% women (n= 23). The histological findings included hyperplasia and well differentiated adenocarcinoma in two patients respectively. Conclusion: The irregular endometrium, adhesions, and growths were found after quinacrine sterilization. The risk of endometrial growth was more after 10 years duration of quinacrine sterilization. PMID:25097516

Afzal, Saira; Bukhari, Mulazim Hussain

2014-01-01

7

Comparison of transvaginal ultrasonography and hysteroscopy in the diagnosis of uterine pathologies.  

PubMed

A thorough evaluation of the uterine cavity is frequently required in gynecology practice. The aim of this study was to compare the diagnostic values of transvaginal ultrasound examination and hysteroscopy in detecting uterine abnormalities in a group of patients within a range of menopausal status and symptomatology. This study included 285 patients admitted with complaints of abnormal uterine bleeding, postmenopausal bleeding, lower abdominal pain, abnormal vaginal discharge or for a routine gynecological examination. All patients had available transvaginal ultrasonography and hysteroscopy data for evaluation. A biopsy was obtained from all patients during the hysteroscopy session. Sensitivity, specificity, positive predictive value, negative predictive value and likelihood ratio were calculated for both methods and compared, considering the histopathological diagnosis as the gold standard. The mean age of the patients was 49.5±12.9 years (range, 24-89 y). Majority of the patients admitted for abnormal uterine bleeding (n=198, 69.4%). For the diagnosis of polyps of any size, hysteroscopy had better sensitivity (p<0.001), however, specificities did not differ (p=1.0). On the other hand, hysteroscopy did not have a sensitivity advantage over TVU in diagnosing polyps greater than 1 cm (p=0.077), although this time hysteroscopy had better specificity (p<0.001). Combined approach did not offer diagnostic advantage for any of the specific pathologies. Although TVU represents a practical approach for the initial evaluation of uterine pathologies, hysteroscopy seems to offer better diagnostic value for uterine pathologies in general, and uterine polyps in particular. PMID:24753775

Babacan, Ali; Gun, Ismet; Kizilaslan, Cem; Ozden, Okan; Muhcu, Murat; Mungen, Ercument; Atay, Vedat

2014-01-01

8

Role of Bedside Transvaginal Ultrasonography in the Diagnosis of Tubo-ovarian Abscess in the Emergency Department  

Microsoft Academic Search

Tubo-ovarian Abscess (TOA) is a complication of pelvic inflammatory disease (PID) requiring admission, i.v. antibiotics and, possibly, aspiration or surgery. The purpose of this study was to describe the role of emergency department (ED) bedside transvaginal ultrasonography (US) in the diagnosis of TOA. This was a retrospective review of non-pregnant ED patients presenting with pelvic pain who were diagnosed with

Srikar Adhikari; Michael Blaivas; Matthew Lyon

2008-01-01

9

Transvaginal Color Doppler Ultrasound in the Assessment of Invasive Cervical Carcinoma  

Microsoft Academic Search

Objective: To assess the validity of transvaginal color Doppler flow in the prediction of malignancy in the uterine cervix. Study Design: Sixteen women with cervical pathology (14 with invasive carcinoma and 2 with cervical intraepithelial neoplasia III) were examined using transvaginal sonography as well as transvaginal color Doppler with measurements of the resistance index of tumor blood flow. Twenty-four women

R. Tepper; Y. Zalel; M. Altaras; G. Ben-Baruch; Y. Beyth

1996-01-01

10

Gastric accommodation assessed by ultrasonography  

PubMed Central

Gastric accommodation is important for the under-standing of the pathophysiology in functional dyspepsia and is also relevant for symptom generation in other disorders. The term gastric accommodation has at least three different meanings: The accommodation process, the accommodation reflex, and the accommodation response. The gastric accommodation process is a complex phenomenon that describes how the size of the gastric compartment changes in response to a meal. The electronic barostat is considered the gold standard in assessing gastric accommodation. Imaging methods, including MRI, SPECT, and ultrasonography may also be used, particularly in patients who are stress-responsive, e.g. functional dyspepsia patients, as a non-invasive and less stress-inducing method is favourable. Ultrasonography satisfies these criteria as it does not by itself distort the physiological response in stress-responsive individuals. PMID:16718805

Gilja, Odd Helge; Lunding, Johan; Hausken, Trygve; Gregersen, Hans

2006-01-01

11

Transvaginal ultrasonography of the endometrium in women with postmenopausal bleeding — a Nordic multicenter study  

Microsoft Academic Search

OBJECTIVE: The purpose of this study was to use transvaginal ultrasonographic measurements to find the thickness of the endometrium below which the risk of endomethial abnormality in women with postmenopausal bleeding is low.STUDY DESIGN: This multicenter study was carried out at eight clinics in four Nordic countries. The study included 1168 women with postmenopausal bleeding scheduled for curettage. Before the

Bengt Karlsson; Seth Granberg; Matts Wikland; Pekka Ylöstalo; Kiserud Torvid; Karel Marsal; Lil Valentin

1995-01-01

12

Antral follicle counts by transvaginal ultrasonography are related to age in women with proven natural fertility  

Microsoft Academic Search

Objective: To investigate the relation between reproductive age and ultrasound (US)-based follicle counts and the reproducibility of follicle counts in regularly cycling women with proven fertility.Design: Prospective observational study.Setting: Tertiary fertility center.Patient(s): Healthy female volunteers with proven fertility, recruited by advertisement in local newspapers.Intervention(s): The number of antral follicles sized 2–10 mm and ovarian volume were estimated by transvaginal US

Gabriëlle J Scheffer; Frank J. M Broekmans; Marinus Dorland; Johannes D. F Habbema; Caspar W. N Looman; Egbert R te Velde

1999-01-01

13

Cervical Length Measured by Transvaginal Ultrasonography and Cervicovaginal Infection as Predictor of Preterm Birth Risk  

PubMed Central

Introduction: The study shows possibilities of transvaginal sonographic measurement of the cervix in prediction of premature birth risk. Goals: The aim of the study was to follow up the cervical length in the pregnant from 16th to 37th week, as well as to do a microbiological analysis of the vaginal and cervical flora and to identify relation between the cervical shortening and microbiological flora as well as with a premature birth. Material and methods: The investigation was conducted as a prospective study on two groups of female patients in Clinical Centre of Banja Luka. In the high risk group we had 8% of patients with cervical length bellow than 15mm, 30% of patients with cervical length from 15 to 25m and 62% of patients with cervical length bigger than 25mm. In the low risk group we had no patients with cervical length bellow 15mm, 95% of patients had cervical length bigger than 25mm and 5% of patients had cervical length from 15 do 25mm. Results: The regression coefficient of the cervical length in the high risk group was 0.44mm, while in the low risk group it was 0.26mm. In the high risk group 67.56% patients had a positive cervical smear finding, while in the low risk group it was 4%. A high premature birth (defined as birth before 36.6 weeks) incidence of 50% was presented in patients with cervical length bellow 15mm. In the group of patients with cervical length up to 25mm the premature risk incidence was 10.52±0.05. In the high risk group of patients with a positive cervical smear finding, regarding the cervical length the percentage was as follows; in the subgroup of 15mm length 88,89±11,87, in subgroup from 15 to 25mm was 62,07±11,43 and in the subgroup bigger than 25mm, 60.06±8.05. Conclusion: By the analysis of the first and second goal of our study we can conclude that ultrasound assessment of cervical length is simple and feasible in the 16th week of pregnancy in both groups, with high and low risk. The length of the cervix in this period is shorter in the high risk group compared with the low-risk group. This difference was not statistically significant, however, it clearly demonstrated connection between shorten length of the cervix with the preterm birth. A regression analysis shows that the shortening of the cervix length is more frequent in high risk group which is to be expected, bearing in mind that in this group, the risk of preterm delivery was significantly higher. PMID:24825940

Banicevic, Arnela Ceric; Popovic, Miroslav; Ceric, Amela

2014-01-01

14

Potentially important variables identified by transvaginal ultrasound-guided embryo transfer  

Microsoft Academic Search

endometrial myometrial contraction leading to endometrial and a soft 2 French transfer catheter, both of which are readily visible movement was observed. Results indicate that tactile assess- by transvaginal ultrasonography. A bivalve Graves speculum was ment of embryo transfer catheter placement is unreliable: in placed into the vagina and the cervix visualized. Any excess cervical mucus was removed by wiping

Robert Woolcott; Jim Stanger

15

Transvaginal ultrasound findings in women with chronic pelvic pain  

Microsoft Academic Search

Objective: To determine the prevalence of anatomic abnormalities as diagnosed by transvaginal ultrasonography in women with chronic pelvic pain whose pelvic examination did not demonstrate an anatomic abnormality.Methods: Transvaginal ultrasonography was performed in premenopausal women who were diagnosed with chronic pelvic pain, had a speculum and bimanual pelvic examination that revealed no evidence of gynecologic pathology, and were subsequently referred

Dale W. Stovall

2000-01-01

16

Transrectal ultrasonography in the assessment of rectovaginal endometriosis  

Microsoft Academic Search

Objective: To evaluate the validity of transrectal ultrasonography in the assessment of rectovaginal endometriosis.Methods: We compared the findings of transrectal ultrasonographic examination performed before surgery with the operative and pathologic findings in 140 women who underwent laparoscopy or laparotomy for suspected endometriosis. The ultrasonographer was asked to investigate whether any deep endometriotic lesions were present in the rectovaginal septum and

L. Fedele; S. Bianchi; A. Portuese; F. Borruto; M. Dorta

1998-01-01

17

MRI versus ultrasonography to assess meniscal abnormalities in acute knees.  

PubMed

While magnetic resonance imaging (MRI) is often considered the "gold standard" diagnostic imaging modality for detection of meniscal abnormalities, it is associated with misdiagnosis in as high as 47% of cases, is costly, and is not readily available to a large number of patients. Ultrasonographic examination of the knee has been reported to be an effective diagnostic tool for this purpose with the potential to overcome many of the shortcomings of MRI. The purpose of this study is to determine the clinical usefulness of ultrasonography for diagnosis of meniscal pathology in patients with acute knee pain and compare its diagnostic accuracy to MRI in a clinical setting. With Institutional Review Board approval, patients (n?=?71) with acute knee pain were prospectively enrolled with informed consent. Preoperative MRI (1.5 T) was performed on each affected knee using the hospital's standard equipment and protocols and read by faculty radiologists trained in musculoskeletal MRI. Ultrasonographic assessments of each affected knee were performed by one of two faculty members trained in musculoskeletal ultrasonography using a 10 to 14?MHz linear transducer. Arthroscopic evaluation of affected knees was performed by one of three faculty orthopedic surgeons to assess and record all joint pathology, which served as the reference standard for determining presence, type, and severity of meniscal pathology. All evaluators for each diagnostic modality were blinded to all other data. Data were collected and compared by a separate investigator to determine sensitivity (Sn), specificity (Sp), positive predictive value (PPV), negative predictive value (NPV), correct classification rate (CCR), likelihood ratios (LR[+] and LR[-]), and odds ratios. Preoperative ultrasonographic assessment of meniscal pathology was associated with Sn?=?91.2%, Sp?=?84.2%, PPV?=?94.5%, NPV?=?76.2%, CCR?=?89.5%, LR(+)?=?5.78, and LR(-)?=?0.10. Preoperative MRI assessment of meniscal pathology was associated with Sn?=?91.7%, Sp?=?66.7%, PPV?=?84.6%, NPV?=?80.0%, CCR?=?81.1%, LR(+)?=?2.75, and LR(-)?=?0.13. Ultrasonography was two times more likely than MRI to correctly determine presence or absence of meniscal pathology seen arthroscopically in this study. Ultrasonography is a useful tool for diagnosis of meniscal pathology with potential advantages over MRI. Based on these data and available portable equipment, ultrasonography could be considered for use as a point-of-injury diagnostic modality for meniscal injuries. PMID:24474166

Cook, James L; Cook, Cristi R; Stannard, James P; Vaughn, Gavin; Wilson, Nichole; Roller, Brandon L; Stoker, Aaron M; Jayabalan, Prakash; Hdeib, Moses; Kuroki, Keiichi

2014-08-01

18

Preoperative diagnosis of fallopian tube malignancy with transvaginal color doppler ultrasonography and magnetic resonance imaging after negative hysteroscopy for postmenopausal bleeding.  

PubMed

Primary fallopian tube carcinoma is a rare malignancy and is not often diagnosed preoperatively. We present a case of a 67-year-old woman who complained of postmenopausal vaginal bleeding. After a negative hysteroscopy, transvaginal ultrasound showed a well vascularized solid-cystic tumor in the adnexal region separate from the ovary. The presence of an adnexal mass was confirmed by MR imaging. Total abdominal hysterectomy with bilateral salpingoophorectomy, omentectomy and appendectomy, as well as pelvic and paraaortic lymphadenectomy was performed. The pathohistological diagnosis was poorly differentiated serous adenocarcinoma of the fallopian tube, FIGO stage IA. The patient was subsequently treated with platinum based adjuvant chemotherapy. PMID:25507377

Arko, Darja; Žegura, Branka; Virag, Mirjana; Dovnik, Nina Fokter; Taka?, Iztok

2014-09-01

19

Transvaginal hydrolaparoscopy.  

PubMed

In 1998, Gordts et al. introduced the concept of transvaginal hydrolaparoscopy (THL) to explore the pelvic cavity through a vaginal incision using a saline solution medium. Several reviews have validated the concept of THL in comparison to the gold standard, i.e. laparosco-py. In a literature review of 187 patients from six studies including one prospective double blind trial, a high concordance was found between THL and laparoscopy ranging from 77.8% to 100%. In a review of 1516 THL, the rate of failure was 5.4% and linked to a retroverted uterus and the presence of adhesions. Another review of 1205 THL, revealed that complete exploration of the pelvis including analysis of both sides with visualization of ovaries and tubes was achieved in 88.3%. In a review of 4232 procedures from 10 studies, bowel injuries occurred in 0.61%. In a multicenter study, the incidence of bowel perforation was 0.65% and decreased to 0.25% after an initial learning experience of 50 THL: 92% of these bowel injuries were managed expectantly without consequences. In addition to diagnostic THL, the relevance of operative THL has been validated mainly for ovarian drilling for polycystic ovary syndrome. Despite the advantages of THL in terms of cost, reliability as compared to laparoscopy in detecting pelvic abnormalities and its superiority in detecting subtle lesions, as well as the feasibility of performing it under local anesthesia thereby contributing to the couple's participation, uptake of THL remains relatively low underlining the need to promote this minimally invasive procedure. PMID:21311418

Daraï, E; Coutant, C; Dessolle, L; Ballester, M

2011-02-01

20

Critical care ultrasonography.  

PubMed

Resuscitative ultrasonography provides rapid, repeatable, and multisystem assessment to guide diagnosis and management of critically ill patients in the emergency department (ED). Cardiac ultrasonography offers new anatomic and hemodynamic information, previously unavailable in an ED setting, whereas other applications match or exceed the speed and utility of existing tests such as chest radiograph (thoracic ultrasonography) or central venous pressure determination (inferior vena cava ultrasonography). Evolving areas of resuscitative ultrasonography include neurologic applications and transesophageal echocardiography, which promise to further enhance the role of ultrasonography in managing critical illness in the ED. PMID:25441042

Peterson, Daniel; Arntfield, Robert T

2014-11-01

21

Pre-operative assessment of benign and malignant ovarian tumours using colour Doppler ultrasonography.  

PubMed

Ultrasonography of 56 women with adenexal masses who were admitted for laparotomy were done mainly by transvaginal route. Though Gray scale morphologic evaluations of masses were done routinely, only colour Doppler imaging criteria were taken into consideration in this study. These are pulsatility index (PI), resistance index (RI), peak systolic velocity (PSV), timed average maximal velocity (TAMXV), vessels localisation and dicrotic notch. Histopathological examination was done and considered as gold standard. In 83.78% cases of benign tumour PI is equal or greater than 1, whereas it was less than 1 in 84.21% in malignant ovarian tumour. The sensitivity, specificity, PPV and NPV were respectively 84.21%, 83.78%, 72.72% and 91.11%. RI in benign tumours were equal to or more than 0.4 in 81.08% and less than 0.4 in 68.42% in case of malignant tumours. The sensitivity, specificity, PPV and NPV were respectively 68.42%, 81.08%, 65% and 83.33%. Considering the TAMXV>12 cm/second as a criterion for malignancy the sensitivity, specificity, PPV and NPV were respectively 89.45%, 89.19%, 80.95% and 94.28%, and also considering septal/central localisation of vessels as a criterion for malignancy, it was found the sensitivity, specificity, PPV and NPV were 89.47%, 62.16%, 54.84% and 92% respectively. Considering absence of dicrotic notch for malignant tumours we found sensitivity, specificity, PPV and NPV were 89.47%, 81.08%, 70.83% and 93.75% respectively. The above findings of the PI, TAMXV and dicrotic notch evaluation show most useful was colour Doppler parameters for pre-operative screening for ovarian malignancy in this study. PMID:21404744

Dasgupta, Shyamal; Malty, Saurav Prakash; Sharma, Partha Pratim; Mukhopadhyay, Amitava; Ghosh, Tarun Kumar

2010-08-01

22

Hybrid Transvaginal Nephrectomy  

Microsoft Academic Search

This case study reports one case of transvaginal natural orifice transluminal endoscopic surgery (NOTES) in a 23-yr-old woman with right flank pain and recurrent urinary tract infection due to a nonfunctional right kidney. She underwent nephrectomy by transvaginal NOTES using the endoscope by vaginal access and two additional 5-mm trocars in the abdomen. Total procedure time was 170min and estimated

Anibal W. Branco; Alcides J. Branco Filho; William Kondo; Rafael W. Noda; Nilton Kawahara; Affonso A. H. Camargo; Luciano C. Stunitz; Jarbas Valente; Marlon Rangel

2008-01-01

23

Usefulness of contrast-enhanced ultrasonography in assessing therapeutic response in hepatocellular carcinoma treated with HIFU  

NASA Astrophysics Data System (ADS)

PURPOSE: We evaluated the efficacy and change of contrast-enhanced ultrasonography after HIFU, and decided on the best timing for contrast-enhanced ultrasonography to evaluate the response of hepatocellular carcinoma with HIFU.

Fukuda, Hiroyuki; Ohto, Masao; Ito, Ryu; Shinohara, Yasushi; Sakamoto, Akio; Karasawa, Eii; Zhu, Hui; Wang, Zhi-Biao

2009-04-01

24

Transvaginal ultrasound and digital examination in predicting successful labor induction  

Microsoft Academic Search

Objective:To compare transvaginal ultrasound and digital cervical examination in predicting successful induction in post-term pregnancy.Methods:Transvaginal ultrasound and digital vaginal examinations were performed on 122 women at 41 or more weeks’ gestation, immediately before labor induction. Ultrasound assessments of cervical length, dilatation, and presence of funneling were compared with the components of the Bishop score. The primary outcome was the rate

Sujata Chandra; Joan M. G Crane; Donna Hutchens; David C Young

2001-01-01

25

A comparison of transvaginal artificial insemination procedures for use in commercially farmed deer  

Microsoft Academic Search

The site of semen deposition (vaginal, cervical or uterine) and the time required for transvaginal artificial insemination (AI) using the Gourley Scope method of AI vs. a standard speculum-guided AI gun was assessed in three species of farmed deer (fallow, red and white-tailed deer). Pregnancy rates using these two transvaginal AI methods were also compared in a commercial herd of

S. T. Willard; D. A. Neuendorff; A. W. Lewis; R. D. Randel

2002-01-01

26

Transvaginal Ultrasound in the Prediction of Preterm Delivery: Singleton and Twin Gestations  

Microsoft Academic Search

Objective: To compare, in singleton and twin pregnancies, the effectiveness of transvaginal ultrasound versus digital examination in predicting preterm delivery in women with suspected preterm labor.Methods: Transvaginal ultrasound and pelvic examinations were performed on patients admitted with suspected preterm labor between 23 and 33 weeks’ gestation. Ultrasound assessment of cervical length and the presence of funneling with fundal pressure were

J. M. G Crane; M Van den Hof; B. A Armson; R Liston

1997-01-01

27

Lung ultrasonography for the assessment of rapid extravascular water variation: evidence from hemodialysis patients.  

PubMed

Chest ultrasonography is a useful tool to assess extravascular lung water at bedside. In presence of interstitial-alveolar imbibition, vertical artifacts arising from the pleura are detected; these are called B-lines. Although a positive linear correlation between B-lines and extravascular lung water has been shown in symptomatic heart failure patients, the subclinical phase of pulmonary imbibition and the clearance of B-lines after rapid body fluid removal have been less investigated. The aim of this study was to assess if chest ultrasound could detect lung water imbibition and its variations induced by dialysis, an experimental model of controlled rapid fluid loss. Forty-one patients undergoing hemodialysis were studied. Total number of B-lines from ultrasound chest scanning and vena cava diameters were measured before and after treatment. Before dialysis, most of the patients presented ultrasound signs of pulmonary imbibition despite the absence of dyspnea; the number of B-lines was associated with the accumulated weight before treatment (p < 0.05) as well as with the residual weight after dialysis (p < 0.01); B-lines and end-inspiratory and end-expiratory vena cava diameters were also significantly reduced after dialysis. Moreover, B-lines reduction was significantly related to weight loss. Ultrasound performed at the bedside can detect lung water and intravascular overload and their reduction after dialysis in yet asymptomatic patients. These observations add further evidence regarding the use of lung ultrasound and inferior vena cava measurement in estimating volume overload and monitoring the response to therapy both in hemodialysis and congestive heart failure patients. PMID:21590437

Trezzi, Matteo; Torzillo, Daniela; Ceriani, Elisa; Costantino, Giorgio; Caruso, Sabrina; Damavandi, Parham Tabaee; Genderini, Augusto; Cicardi, Marco; Montano, Nicola; Cogliati, Chiara

2013-08-01

28

Assessment of TMJ Disorders Using Ultrasonography as a Diagnostic Tool: A Review.  

PubMed

Temporomandibular disorders affect nearly 10-70% of population. Hence, a proper diagnosis of temporomandibular disorders using appropriate diagnostic aids is required. Thus, the purpose of this review was to check the use of ultrasonography as a diagnostic aid in the detection of TMJ disorders.A literature review was performed in Pub Med Central and Cochrane library using Mesh Terms - 'ultrasonography' and 'TMJ disorders'. Out of the total 113 titles appeared, 38 were related to the research question. Further search criteria were applied to the articles, out of which 11 articles fulfilled the criteria and were selected for the review. Two articles which were hand searched were also included. Sensitivity of ultrasonography in detecting TMJ disorders in a majority of articles ranged from 41%-90% in disc displacement, when MRI was taken as the gold standard. In case of TMJ Effusion and Condylar effusion, sensitivities ranged from 20-80% and 83% respectively. It was also seen that sensitivity increased with increase in frequency of transducer. In the available literature, it was found that ultrasonography was an acceptable diagnostic tool for detection of disc displacement, condylar erosion and articular effusion. PMID:24551747

Kundu, Hansa; Basavaraj, P; Kote, Sowmya; Singla, Ashish; Singh, Shilpi

2013-12-01

29

Transvaginal therapy of genuine stress incontinence  

Microsoft Academic Search

Two minimally invasive techniques for treatment of genuine stress incontinence, a transvaginal retropubic urethropexy and a transvaginal sling, using Cooper’s ligament as the anchoring structure, are reported along with the early results. These surgeries can be done easily in conjunction with vaginal reconstructive procedures. Twenty-seven women were operated on between October 1998 and September 1999. Seventeen women underwent the transvaginal

Sumana Koduri; Roger P Goldberg; Peter K Sand

2000-01-01

30

Diagnostic Accuracy of Transvaginal Sonography in the Detection of Uterine Abnormalities in Infertile Women  

PubMed Central

Background Accurate diagnosis of uterine abnormalities has become a core part of the fertility work-up. A variety of modalities can be used for the diagnosis of uterine abnormalities. Objectives This study was designed to assess the diagnostic accuracy of transvaginal ultrasonography (TVS) in uterine pathologies of infertile patients using hysteroscopy as the gold standard. Patients and Methods This was a cross-sectional study carried out in the Department of Reproductive Imaging at Royan Institute from October 2007 to October 2008. In this study, the medical documents of 719 infertile women who were investigated with transvaginal ultrasound (TVS) and then hysteroscopy were reviewed. All women underwent hysteroscopy in the same cycle time after TVS. Seventy-six out of 719 patients were excluded from the study and 643 patients were studied. TVS was performed in the follicular phase after cessation of bleeding. Sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) were calculated for TVS. Hysteroscopy served as the gold standard. Results The overall sensitivity, specificity, positive and negative predictive values for TVS in the diagnosis of uterine abnormality was 79%, 82%, 84% and 71%, respectively. The sensitivity and PPV of TVS in detection of polyp were 88.3% and 81.6%, respectively. These indices were 89.2% and 92.5%, respectively for fibroma, 67% and 98.3%, respectively for subseptated uterus and 90.9% and 100%, respectively for septated uterus. Adhesion and unicornuated uterus have the lowest sensitivity with a sensitivity of 35% and PPV of 57.1%. Conclusion TVS is a cost-effective and non-invasive method for diagnosis of intrauterine lesions such as polyps, submucosal fibroids and septum. It is a valuable adjunctive to hysteroscopy with high accuracy for identification and characterization of intrauterine abnormalities. This may lead to a more precise surgery plan and performance. PMID:23329979

Niknejadi, Maryam; Haghighi, Hadieh; Ahmadi, Firoozeh; Niknejad, Fatemeh; Chehrazi, Mohammad; Vosough, Ahmad; Moenian, Deena

2012-01-01

31

Transvaginal Appendectomy: A Systematic Review  

PubMed Central

Background. Natural orifice transluminal endoscopic surgery (NOTES) is a new approach that allows minimal invasive surgery through the mouth, anus, or vagina. Objective. To summarize the recent clinical appraisal, feasibility, complications, and limitations of transvaginal appendectomy for humans and outline the techniques. Data Sources. PubMed/MEDLINE, Cochrane, Google-Scholar, EBSCO, clinicaltrials.gov and congress abstracts, were searched. Study Selection. All related reports were included, irrespective of age, region, race, obesity, comorbidities or history of previous surgery. No restrictions were made in terms of language, country or journal. Main Outcome Measures. Patient selection criteria, surgical techniques, and results. Results. There were total 112 transvaginal appendectomies. All the selected patients had uncomplicated appendicitis and there were no morbidly obese patients. There was no standard surgical technique for transvaginal appendectomy. Mean operating time was 53.3 minutes (25–130 minutes). Conversion and complication rates were 3.6% and 8.2%, respectively. Mean length of hospital stay was 1.9 days. Limitations. There are a limited number of comparative studies and an absence of randomized studies. Conclusions. For now, nonmorbidly obese females with noncomplicated appendicitis can be a candidate for transvaginal appendectomy. It may decrease postoperative pain and enable the return to normal life and work off time. More comparative studies including subgroups are necessary. PMID:25614832

Yagci, Mehmet Ali; Kayaalp, Cuneyt

2014-01-01

32

Complications of transvaginal ultrasound-directed follicle aspiration: A review of 2670 consecutive procedures  

Microsoft Academic Search

Purpose Complications following transvaginal ultrasound-directed follicle aspiration are rare, making it difficult to assess their true incidence. During a 4-year prospective study the complications arising from a series of 2670 consecutive procedures were monitored.

Stephen John Bennett; John Justin Waterstone; Wei Chen Cheng; John Parsons

1993-01-01

33

Improvement of Diagnostic Accuracy of Transvaginal Ultrasound for Identification of Endometrial Malignancies by Using Cutoff Level of Endometrial Thickness Based on Length of Time Since Menopause  

Microsoft Academic Search

Transvaginal ultrasonography (TVS) is considered useful for identifying endometrial malignancies, but it has a low specificity and a high false-positive rate. The purpose of this study was to improve the specificity of this technique. A total of 300 postmenopausal women were studied. They were clinically evaluated by TVS and endometrial histology. Twenty women yielded pathologic findings on endometrial examination. The

Hiroshi Tsuda; Masami Kawabata; Kazume Kawabata; Kumio Yamamoto; Naohiko Umesaki

1997-01-01

34

A pilot study on real-time transvaginal ultrasonographic elastography of cystic ovarian lesions  

PubMed Central

Background & objectives: This study was carried out to determine the appearance of various cystic ovarian lesions on transvaginal real-time ultrasonographic elastography and to investigate its potential in the differential diagnosis of cystic ovarian lesions. Methods: Twenty six women (age range, 27-71 yr; mean age 42 ± 16 yr) with cystic ovarian masses underwent transvaginal B-mode and Doppler ultrasonography, and transvaginal real-time ultrasonographic elastography. Those having ovarian cysts with solid components underwent to biopsy or surgical excision. The elasticity colour code (pattern 1-5), and strain index of cystic ovarian lesions were analyzed and associated with histopathological diagnosis. Results: Eleven of 26 ovarian cysts (42%) (diameter range, 3.2-4.5 cm) without solid component were not colour coded with blue or colour coded with blue-red-green heterogenous mosaic pattern. Fifteen of 26 cystic ovarian lesions (58%) (diameter range, 3.5-6.5 cm) had solid components. Among these, two had colour pattern 5, their strain indexes were 3.7 and 4, and their histopathologic diagnosis were germ cell carcinoma. One had colour pattern 5, with strain index 13.6, and histopathologic diagnosis was clear cell carcinoma. Interpretation & conclusions: Transvaginal real-time ultrasonographic elastography has potential role in the differential diagnosis of cystic ovarian lesions and this technique may be useful in differentiation of the benign lesions from those of malignant. PMID:23852289

Ciledag, Nazan; Arda, Kemal; Aktas, Elif; Aribas, Bilgin Kadri

2013-01-01

35

Comparison between muscle activation measured by electromyography and muscle thickness measured using ultrasonography for effective muscle assessment.  

PubMed

In this study, we aimed to compare the intrarater reliability and validity of muscle thickness measured using ultrasonography (US) and muscle activity via electromyography (EMG) during manual muscle testing (MMT) of the external oblique (EO) and lumbar multifidus (MF) muscles. The study subjects were 30 healthy individuals who underwent MMT at different grades. EMG was used to measure the muscle activity in terms of ratio to maximum voluntary contraction (MVC) and root mean square (RMS) metrics. US was used to measure the raw muscle thickness, the ratio of muscle thickness at MVC, and the ratio of muscle thickness at rest. One examiner performed measurements on each subject in 3 trials. The intrarater reliabilities of the % MVC RMS and raw RMS metrics for EMG and the % MVC thickness metrics for US were excellent (ICC=0.81-0.98). There was a significant difference between all the grades measured using the % MVC thickness metric (p<0.01). Further, this % MVC thickness metric of US showed a significantly higher correlation with the EMG measurement methods than with the others (r=0.51-0.61). Our findings suggest that the % MVC thickness determined by US was the most sensitive of all methods for assessing the MMT grade. PMID:25088820

Kim, Chang-Yong; Choi, Jong-Duk; Kim, Suhn-Yeop; Oh, Duck-Won; Kim, Jin-Kyung; Park, Ji-Whan

2014-10-01

36

Ultrasonography assessment of hepatobiliary abnormalities in 3359 subjects with Opisthorchis viverrini infection in endemic areas of Thailand  

Microsoft Academic Search

A cross sectional study on hepatobiliary abnormalities in opisthorchiasis was performed in 8936 males and females aged from 20 to 60years from 90 villages of Khon Kaen province, Northeast Thailand. All were stool-examined for Opisthorchis viverrini infection by standard quantitative formalin\\/ethyl acetate concentration technique. Of these, 3359 participants with stool egg positive underwent ultrasonography of the upper abdomen. The hepatobiliary

Eimorn Mairiang; Thewarach Laha; Jeffrey M. Bethony; Bandit Thinkhamrop; Sasithorn Kaewkes; Paiboon Sithithaworn; Smarn Tesana; Alex Loukas; Paul J. Brindley; Banchob Sripa

37

GnRH Analogues, Transvaginal Ultrasound-Guided Drainage and Intracystic Injection of Recombinant Interleukin2 in the Treatment of Endometriosis  

Microsoft Academic Search

We performed a double-blind, randomised controlled trial to evaluate the results of ultrasound-guided aspiration of endometriomas under the effect of GnRH analogues and a possible additional beneficial effect by leaving 600,000 IU of recombinant interleukin-2 (rIL-2) in the cysts. Twenty-four women with endometriosis-related symptoms, increased values of CA-125 and transvaginal ultrasonography showing endometriomas >3 cm who were initially sent to

Pedro Acién; Francisco J. Quereda; María-José Gómez-Torres; Rosa Bermejo; Mercedes Gutierrez

2003-01-01

38

Transvaginal Appendectomy in Morbidly Obese Patient  

PubMed Central

Introduction. Laparoscopic appendectomy has significant benefits in obese patients. However, morbid obesity can be accepted as an exclusion criterion for natural orifice transluminal endoscopic surgery (NOTES). Here, we present a transvaginal appendectomy in a 66-year-old morbidly obese (BMI 36 kg/m2, ASA III) patient. Case and Technique. Acute appendicitis was suspected based on history, physical examination, laboratory tests, and ultrasound findings. During laparoscopic surgery, a 5?mm trocar was inserted through the umbilicus and a 5?mm telescope was placed. A 12?mm trocar and a 5?mm grasper were inserted separately through the posterior fornix of the vagina under laparoscopic guidance. The appendix was divided with an endoscopic stapler through the transvaginal 12?mm trocar and removed from the same trocar. The operating time was 75 minutes with minimal blood loss (<10?mL). The patient was discharged 16 hours after surgery uneventfully and she did not require any analgesic administration. Conclusion. To the best of our knowledge, this is the first clinical case that focuses on the transvaginal appendectomy at morbid obesity. We can say that morbid obesity does not constitute an obstacle for treatment of acute appendicitis by transvaginal endoscopic surgery. PMID:25506028

Ates, Mustafa

2014-01-01

39

Bovine ultrasound-guided transvaginal amniocentesis  

Microsoft Academic Search

Recent interest and research activities in ultrasound-guided transvaginal amniocentesis have contributed greatly to the development of a reliable technique, particularly with respect to a reduction in fetal loss after the puncture procedure. Several investigators have reported a variety of techniques for the collection of bovine fetal fluids at different stages of pregnancy; however, thus far, a high incidence of fetal

A. Garcia; M. Salaheddine

1997-01-01

40

Use of the angle of progression on ultrasonography to predict spontaneous onset of labor within 7 days.  

PubMed

Abstract Objective: To investigate the relationship between angle of progression (AoP) on ultrasonography at 37-40 weeks' gestation and delivery within 7 days. Methods: This prospective study was conducted between January 2013 and May 2013 at Korea University Guro Hospital, Korea. Nulliparous women between 37/0 and 40/3 weeks' gestation with a singleton fetus, intact membrane, and cephalic presentation from January 2013 to May 2013 were enrolled. To evaluate the cervical parameters of cervical length and AoP, transvaginal and transperineal ultrasonography were performed, respectively. We then assessed the relationship between cervical parameters and onset of labor within 7 days by multivariate logistic regression analysis. Results: Women who underwent spontaneous onset of labor within 7 days had a significantly shorter cervical length and AoP than those who underwent labor after 7 days. Logistic regression analysis showed that a larger AoP was an independent predictor of spontaneous labor within 7 days. Conclusions: A larger AoP was significantly associated with spontaneous onset of labor within 7 days. These findings may be useful for counseling patients regarding the management of term pregnancies. PMID:24937504

Cho, Geum Joon; Hong, Hye-Ri; Seol, Hyun-Joo; Koo, Bo Hae; Hong, Soon-Cheol; Oh, Min-Jeong; Kim, Hai-Joong

2014-06-17

41

Hepatic vein arrival time as assessed by contrast-enhanced ultrasonography is useful for the assessment of portal hypertension in compensated cirrhosis.  

PubMed

The measurement of the hepatic venous pressure gradient (HVPG) for the estimation of portal hypertension (PH) in cirrhosis has some limitations, including its invasiveness. Hepatic vein arrival time (HVAT), as assessed by microbubble contrast-enhanced ultrasonography (CEUS), is negatively correlated with the histological grade of liver fibrosis because of the associated hemodynamic abnormalities. Anatomical and pathophysiological changes in liver microcirculation are the initial events leading to PH. However, the direct relationship between HVAT and PH has not been evaluated. The present study measured both HVPG and HVAT in 71 consecutive patients with compensated cirrhosis and analyzed the relationship between the two parameters (i.e., the derivation set). Results were validated in 35 compensated patients with cirrhosis at another medical center (i.e., the validation set). The derivation set had HVPG and HVAT values of 11.4 ± 5.0 mmHg (mean ± standard deviation; range, 2-23) and 14.1 ± 3.4 seconds (range, 8.4-24.2), respectively; there was a statistically significant negative correlation between HVPG and HVAT (r(2) = 0.545; P < 0.001). The area under the receiver operating characteristic curve (AUROC) was 0.973 for clinically significant PH (CSPH; HVPG, ? 10 mmHg), and the sensitivity, specificity, positive predictive value, negative predictive value, and positive and negative likelihood ratios for CSPH for an HVAT cut-off value of 14 seconds were 92.7%, 86.7%, 90.5%, 89.7%, 6.95, and 0.08, respectively. In addition, a shorter HVAT was associated with worse Child-Pugh score (P < 0.001) and esophageal varices (P = 0.018). In the validation set, there was also a significant negative correlation between HVAT and HVPG (r(2) = 0.538; P < 0.001), and AUROC = 0.953 for CSPH. HVAT was significantly correlated with PH. These results indicate that measuring HVAT is useful for the noninvasive prediction of CSPH in patients with compensated cirrhosis. PMID:22473911

Kim, Moon Young; Suk, Ki Tae; Baik, Soon Koo; Kim, Hyoun A; Kim, Young Ju; Cha, Seung Hwan; Kwak, Hwa Ryun; Cho, Mee Yon; Park, Hong Jun; Jeon, Hyo Keun; Park, So Yeon; Kim, Bo Ra; Hong, Jin Heon; Jo, Ki Won; Kim, Jae Woo; Kim, Hyun Soo; Kwon, Sang Ok; Chang, Sei Jin; Baik, Gwang Ho; Kim, Dong Joon

2012-09-01

42

Suitability of epididymal and testicular ultrasonography and computerized image analysis for assessment of current and future semen quality in the ram.  

PubMed

Breeding soundness evaluation (BSE) is the primary assessment for determining the reproductive potential of male animals. This method, however, cannot be used to evaluate semen frequently or to predict future semen quality. Computerized analysis of ultrasonographic images provides information on histophysiological changes in male reproductive organs. We hypothesized that: (i) semen parameters would correlate with ultrasonographic characteristics of the distal region (cauda) of the epididymis and (ii) testicular ultrasound images and/or circulating testosterone concentration would predict future semen quality in the ram. Six adult rams underwent BSE and scrotal ultrasonography approximately 60 d apart (average duration of the spermatogenic cycle) both during the breeding (December and February) and non-breeding (June and August) seasons. An inverse correlation was found between pixel intensity (numerical pixel values) of the epididymes and percentage of sperm in semen with normal morphology (r = -0.46, P < 0.05). Pixel heterogeneity (standard deviation of pixel values) correlated negatively with percentage of sperm with normal morphology (r = -0.42, P < 0.05) and directly with percentage of spermatozoa with abnormal tails (r = 0.43, P < 0.05). Pixel heterogeneity of testicular parenchyma obtained approximately 60 d prior to semen evaluation inversely correlated with percentage of sperm with normal morphology (r = -0.73, P < 0.01) and sperm progressive motility (r = -0.76, P < 0.01), and directly with percentage of sperm with abnormal tails (r = 0.72, P < 0.01) and loose heads (r = 0.79, P < 0.01). We concluded that scrotal ultrasonography combined with computer-assisted analyses of epididymal and testicular echotexture in the ram was a valuable method for determining certain current and future semen parameters, respectively. PMID:22302707

Ahmadi, Bahareh; Lau, Cathy Pik-Shan; Giffin, Jennifer; Santos, Natalia; Hahnel, Ann; Raeside, James; Christie, Heather; Bartlewski, Pawel

2012-02-01

43

Ultrasonography assessment of hepatobiliary abnormalities in 3,359 subjects with Opisthorchis viverrini infection in endemic areas of Thailand  

PubMed Central

A cross sectional study on hepatobiliary abnormalities in opisthorchiasis was performed in 8,936 males and females aged from 20 to 60 years from 90 villages of Khon Kaen province, Northeast Thailand. All were stool-examined for Opisthorchis viverrini infection by standard quantitative formalin/ethyl acetate concentration technique. Of these, 3,359 participants with stool egg positive were underwent ultrasonography of the upper abdomen. The hepatobiliary abnormalities detected by ultrasound are described here. This study found a significantly higher frequency of advanced periductal fibrosis in persons with chronic opisthorchiasis (23.6%), particularly in males. Risks of the fibrosis included intensity of infection, and age younger than 30 years. Height of left lobe of the liver, cross-section of the gallbladder dimensions post fatty meal, sludge, and, interestingly, intrahepatic duct stones were significantly associated with the advanced periductal fibrosis. Eleven suspected cholangiocarcinoma (CCA) cases were observed. This study emphasizes the current status of high O. viverrini infection rate and the existence of hepatobiliary abnormalities including suspected CCA in opisthorchiasis endemic areas of Thailand. PMID:21771664

Mairiang, Eimorn; Laha, Thewarach; Bethony, Jeffrey M.; Thinkhamrop, Bandit; Kaewkes, Sasithorn; Sithithaworn, Paiboon; Tesana, Smarn; Loukas, Alex; Brindley, Paul J.; Sripa, Banchob

2014-01-01

44

Ultrasonography assessment of hepatobiliary abnormalities in 3359 subjects with Opisthorchis viverrini infection in endemic areas of Thailand.  

PubMed

A cross sectional study on hepatobiliary abnormalities in opisthorchiasis was performed in 8936 males and females aged from 20 to 60 years from 90 villages of Khon Kaen province, Northeast Thailand. All were stool-examined for Opisthorchis viverrini infection by standard quantitative formalin/ethyl acetate concentration technique. Of these, 3359 participants with stool egg positive underwent ultrasonography of the upper abdomen. The hepatobiliary abnormalities detected by ultrasound are described here. This study found a significantly higher frequency of advanced periductal fibrosis in persons with chronic opisthorchiasis (23.6%), particularly in males. Risks of the fibrosis included intensity of infection, and age younger than 30 years. Height of left lobe of the liver, cross-section of the gallbladder dimensions post fatty meal, sludge, and, interestingly, intrahepatic duct stones were significantly associated with the advanced periductal fibrosis. Eleven suspected cholangiocarcinoma (CCA) cases were observed. This study emphasizes the current status of high O. viverrini infection rate and the existence of hepatobiliary abnormalities including suspected CCA in opisthorchiasis endemic areas of Thailand. PMID:21771664

Mairiang, Eimorn; Laha, Thewarach; Bethony, Jeffrey M; Thinkhamrop, Bandit; Kaewkes, Sasithorn; Sithithaworn, Paiboon; Tesana, Smarn; Loukas, Alex; Brindley, Paul J; Sripa, Banchob

2012-03-01

45

Role of transvaginal sonography (TVS) in the detection of endometrial hyperplasia.  

PubMed

Transvaginal sonography is superior to transabdominal sonography in most cases of pelvic pathology. A cross sectional study was done with forty patients to evaluate the clinical usefulness of transvaginal ultrasonography (TVS) in pre, peri and post menopausal women suspected to have endometrial hyperplasia.. The study was carried out January 2007 to November 2008 for a period of two years. The patients having endometrial hyperplasia diagnosed by TVS were correlated with histopathological diagnosis. Of total 40 cases, 18(45.0%) cases were endometrial hyperplasia and 22(55.0%) were negative for endometrial hyperplasia respectively in TVS findings. Only 2 cases were found as negative for endometrial hyperplasia in histopathology among the all suspected endometrial hyperplasia, which were diagnosed by TVS. On the other hand 17(42.5%) cases were endometrial hyperplasia and 23(57.5%) cases were negative for endometrial hyperplasia in histopathological findings. Among 22 negative for endometrial hyperplasia cases which were diagnosed by TVS, 1 case was endometrial hyperplasia and the rest 21 cases were negative for endometrial hyperplasia in histopathological findings. The validity of TVS in diagnosis of endometrial hyperplasia were studied by calculating sensitivity, specificity, accuracy, positive predictive value, which were 94%, 92%, 93%, 89% and 96% respectively. As the TVS findings of the present study correlated well with the histopathology findings and the validity test values were higher than observed by others, it can be concluded that TVS is sensitive and accurate modality in the evaluation of endometrial hyperplasia. PMID:25178606

Showkat, M S; Khondker, L; Nabi, S; Bhowmik, B

2014-07-01

46

Persistent postmolar gestational trophoblastic disease: use of transvaginal sonography and colour flow Doppler.  

PubMed

Invasive moles have been difficult to diagnose except at hysterectomy. Many patients with persistent gestational trophoblastic disease (GTD) have been treated without ever demonstrating the site of the persistent trophoblastic focus. High resolution transvaginal sonography (TVS) has provided a technique of demonstrating very small uterine lesions, previously unsuspected by transabdominal sonography. The addition of colour flow Doppler further increased diagnostic sensitivity and provides another means of monitoring response to therapy. Three patients with persistent GTD, scanned by TVS and CFD (colour flow Doppler) performed as part of their metastatic work-up are presented. The only abnormalities detected were foci demonstrated within the myometrium that demonstrated increased flow on CFD. Single agent chemotherapy was commenced and the patients were monitored periodically through their course with repeat ultrasonography. After an initial lag period, the lesions decreased in size as the beta-HCG titres fell. An unsuspected adnexal mass was diagnosed on 1 patient, later proving to be a mature ovarian teratoma. PMID:8179558

Carter, J; Carlson, J; Hartenbach, E; Saltzman, A; Fowler, J; Carson, L; Twiggs, L B

1993-11-01

47

Review of ultrasonography of malignant neck nodes: greyscale, Doppler, contrast enhancement and elastography  

PubMed Central

Abstract Assessment of neck lymph nodes is essential in patients with head and neck cancers for predicting the patient’s prognosis and selecting the appropriate treatment. Ultrasonography is a useful imaging tool in the assessment of neck lymph nodes. Greyscale ultrasonography assesses the size, distribution, and internal architecture of lymph nodes. Doppler ultrasonography evaluates the intranodal vascular pattern and resistance of lymph nodes. Contrast-enhanced ultrasonography provides information on lymph node parenchymal perfusion. Elastography allows qualitative and quantitative assessment of lymph node stiffness. This article reviews the value of greyscale, Doppler and contrast-enhanced ultrasonography as well as elastography in the assessment of malignant nodes in the neck. PMID:24434158

Ying, M.; Bhatia, K.S.S.; Lee, Y.P.; Yuen, H.Y.

2013-01-01

48

Transvaginal Hysterosonography for Differential Diagnosis between Submucous and Intramural Myoma  

Microsoft Academic Search

Thirty-six patients with hypermenorrhea, dysmenorrhea, and\\/or anemia were examined by transvaginal sonography (TVS) and by transvaginal hysterosonography using an endometrial balloon catheter and saline (TVHS). Those patients who showed distinct intramural myomas by TVS were excluded from this study. Of 36 patients, 22 were diagnosed with submucous myomas, 10 with intramural myomas, and 4 with endometrial polyps by TVS, but

Misao Fukuda; Takashi Shimizu; Kiyomi Fukuda; Wakako Yomura; Seiitsu Shimizu

1993-01-01

49

Transvaginal ultrasound, uterine biopsy and hysteroscopy for postmenopausal bleeding  

Microsoft Academic Search

Objectives: To determine the importance of endometrial biopsy and transvaginal ultrasound in patients with postmenopausal bleeding. Methods: Eighty patients with postmenopausal bleeding were submitted to transvaginal ultrasound followed by endometrial biopsy. Hysteroscopy and dilatation and curettage were carried out to confirm normality of the uterine cavity. Results: The endometrial echo could be visualized in all patients with postmenopausal bleeding. The

M. G. Giusa-Chiferi; W. J. Gonçalves; E. G. Baracat; L. Cavalcanti de Albuquerque Neto; C. C. R. Bortoletto; G. Rodrigues de Lima

1996-01-01

50

Prolapsed simple ureterocele: evaluation by transvaginal voiding sono-urethrography.  

PubMed

Prolapsed ureterocele is a rare complication that may present with acute bladder outlet obstruction, generally in female infants. We present a case of prolapsed simple ureterocele in an adult woman, evaluated by transvaginal micturating sono-urethrography. High-frequency transvaginal sonography of the urethra performed during micturation revealed the relationship of the ureterocele with the urethral wall. PMID:21538376

Taori, Kishor; Joshi, Manisha; Dhakate, Suresh; Disawal, Amit; Nathe, Vibhavari; Mone, Rachna

2011-01-01

51

Transvaginal evisceration after laparoscopic adrenalectomy in neurofibromatosis  

PubMed Central

Transvaginal evisceration is a rare complication of hysterectomy. We describe this event following adrenalectomy for pheochromocytoma in a patient affected by neurofibromatosis. This is the first case reported in the literature following laparoscopic surgery. Prompt emergency intestinal reduction and vaginal cuff repair is required to prevent ischemia of the eviscerated bowel. Pneumoperitoneum, passage of stools, or an unknown connective tissue dysplasia due to genetic abnormalities might have contributed to this unpredictable event. The general surgeon must be aware of this rare but challenging gynecological complication. PMID:20606805

Vettoretto, Nereo; Balestra, Luca; Taglietti, Lucio; Giovanetti, Maurizio

2010-01-01

52

Perioperative and post-operative complications of transvaginal ultrasound-guided oocyte retrieval: prospective study of >1000 oocyte retrievals  

Microsoft Academic Search

BACKGROUND: Although transvaginal ultrasound-guided oocyte retrievals (OR) are performed routinely world- wide, there is very little systematic data about its complications. METHODS: We performed a prospective cohort study following the perioperative and post-operative complications of over 1058 ORs. Additionally, we assessed the pain experienced during the OR. RESULTS: A total of 1166 OR were performed during the study period, of

A. K. Ludwig; M. Glawatz; G. Griesinger; K. Diedrich; M. Ludwig

2006-01-01

53

Exercise induced muscle damage and recovery assessed by means of linear and non-linear sEMG analysis and ultrasonography.  

PubMed

This study was aimed at investigating the time-course and recovery from eccentric (EC) exercise induced muscle damage by means of surface electromyography (sEMG), ultrasonography (US), and blood enzymes. Five subjects (EC Group) performed two bouts of 35 EC maximum contractions with the biceps brachii of their non dominant arm, five subjects were tested without performing EC (Control Group: CNT). The maximal isometric force (MVC) was measured. Force and sEMG signals were recorded during 80% MVC isometric contractions. In EC and CNT subjects US assessment on non-dominant biceps brachii was performed; creatin kinase (CK) and lactic dehydrogenasis (LDH) plasma levels were also assessed. Force, sEMG and CK-LDH measurements were performed before EC and after it periodically for 4 weeks. The sEMG was analysed in time and frequency domains; a non-linear analysis (Lyapunov 1st exponent, L1) of sEMG was also performed. After EC, the MVC was reduced by 40% on average with respect to the pre-EC values. A significant decrease in the initial frequency content, and in the MDF and L1 decay (13-42% less than the pre-EC values, respectively) was also observed. The sEMG amplitude (Root Mean Square, RMS) was unchanged after EC. The US revealed an increase in muscle belly thickness and in local muscle blood flow after EC. A complete recovery of all the considered parameters was achieved in two weeks. In conclusion sEMG analysis was confirmed as an early indicator of muscle damage. Muscle recovery from damage is followed by both sEMG and US and this may have useful clinical implications. Non linear analysis (L1) was revealed to be sensitive to early sEMG modifications induced by EC as well as able to follow the post EC changes in the sEMG. PMID:11228421

Sbriccoli, P; Felici, F; Rosponi, A; Aliotta, A; Castellano, V; Mazzà, C; Bernardi, M; Marchetti, M

2001-04-01

54

Transcranial Doppler ultrasonography: year 2000 update.  

PubMed

In this update, the main clinical applications of transcranial Doppler ultrasonography are reassessed. A specific format for technology assessment, personal experience, and an extensive review of the literature form the basis of the evaluation. The document is approved by the American Society of Neuroimaging and the Neurosonology Research Group of the World Federation of Neurology. PMID:10800264

Babikian, V L; Feldmann, E; Wechsler, L R; Newell, D W; Gomez, C R; Bogdahn, U; Caplan, L R; Spencer, M P; Tegeler, C; Ringelstein, E B; Alexandrov, A V

2000-04-01

55

Update on screening breast ultrasonography.  

PubMed

This article includes current recommendations for screening breast ultrasonography, a review of the literature, a discussion of problems associated with the implementation of screening breast ultrasonography, and a brief discussion of the political and economic factors influencing the use of screening breast ultrasonography. PMID:24792654

Merry, Ginger M; Mendelson, Ellen B

2014-05-01

56

Transvaginal Ultrasound Evaluation of Myometrial Invasion in Endometrial Carcinoma  

Microsoft Academic Search

In 20 cases of histologically proved endometrial cancer the depth of myometrial invasion was ascertained by means of transvaginal ultrasound, using a high-frequency endocavitary probe. The sonographic findings were confirmed by histologic examination in 18 of the 20 patients evaluated (90.0%). Transvaginal ultrasound provides a fuller preoperative clinical picture and supplies additional diagnostic information which is invaluable in the choice

M. Conte; L. Guariglia; Benedetti Panici; G. Scambia; R. Cento; S. Mancuso

1990-01-01

57

Diagnosis of deep infiltrating endometriosis: accuracy of magnetic resonance imaging and transvaginal 3D ultrasonography  

Microsoft Academic Search

Purpose  To compare two different imaging modalities, magnetic resonance (MR), and three-dimensional sonography (3DUS), in order to\\u000a evaluate the specific role in preoperative work-up of deep infiltrating endometriosis.\\u000a \\u000a \\u000a \\u000a \\u000a Materials and methods  33 women with endometriosis underwent 3DUS and MR followed by surgical and histopathological investigations. Investigators\\u000a described the disease extension in the following sites: torus uterinus and uterosacral ligaments (USL), vagina, rectovaginal-septum,

Rosario Francesco Grasso; Vincenza Di Giacomo; Pietro Sedati; Ornella Sizzi; Giuseppe Florio; Eliodoro Faiella; Alfonso Rossetti; Riccardo Del Vescovo; Bruno Beomonte Zobel

2010-01-01

58

The accuracy of transvaginal ultrasonography for the diagnosis of ectopic pregnancy prior to surgery  

E-print Network

to surgery George Condous1,4 , Emeka Okaro1 , Asma Khalid1 , Chuan Lu2 , Sabine Van Huffel2 , D Timmerman3 and Tom Bourne1 1 Early Pregnancy, Gynaecological Ultrasound and Minimal Access Surgery Unit, St George undergoing surgery for presumed ectopic pregnancy. METHODS: A prospective, observa- tional study. Women were

59

Thorax, Trachea, and Lung Ultrasonography in Emergency and Critical Care Medicine: Assessment of an Objective Structured Training Concept  

PubMed Central

Background and Study objective. Focused lung ultrasound (LUS) examinations are important tools in critical care medicine. There is evidence that LUS can be used for the detection of acute thoracic lesions. However, no validated training method is available. The goal of this study was to develop and assess an objective structured clinical examination (OSCE) curriculum for focused thorax, trachea, and lung ultrasound in emergency and critical care medicine (THOLUUSE). Methods. 39 trainees underwent a one-day training course in a prospective educational study, including lectures in sonoanatomy and -pathology of the thorax, case presentations, and hands-on training. Trainees' pre- and posttest performances were assessed by multiple choice questionnaires, visual perception tests by interpretation video clips, practical performance of LUS, and identification of specific ultrasound findings. Results. Trainees postcourse scores of correct MCQ answers increased from 56 ± 4% to 82 ± 2% (mean± SD; P < 0.001); visual perception skills increased from 54 ± 5% to 78 ± 3% (P < 0.001); practical ultrasound skills improved, and correct LUS was performed in 94%. Subgroup analysis revealed that learning success was independent from the trainees' previous ultrasound experience. Conclusions. THOLUUSE significantly improves theoretical and practical skills for the diagnosis of acute thoracic lesions. We propose to implement THOLUUSE in emergency medicine training. PMID:24369503

Breitkreutz, Raoul; Dutiné, Martina; Scheiermann, Patrick; Kujumdshiev, Sandy; Ackermann, Hanns; Seeger, Florian Hartmut; Walcher, Felix; Hirche, Tim Oliver

2013-01-01

60

Thorax, trachea, and lung ultrasonography in emergency and critical care medicine: assessment of an objective structured training concept.  

PubMed

Background and Study objective. Focused lung ultrasound (LUS) examinations are important tools in critical care medicine. There is evidence that LUS can be used for the detection of acute thoracic lesions. However, no validated training method is available. The goal of this study was to develop and assess an objective structured clinical examination (OSCE) curriculum for focused thorax, trachea, and lung ultrasound in emergency and critical care medicine (THOLUUSE). Methods. 39 trainees underwent a one-day training course in a prospective educational study, including lectures in sonoanatomy and -pathology of the thorax, case presentations, and hands-on training. Trainees' pre- and posttest performances were assessed by multiple choice questionnaires, visual perception tests by interpretation video clips, practical performance of LUS, and identification of specific ultrasound findings. Results. Trainees postcourse scores of correct MCQ answers increased from 56 ± 4% to 82 ± 2% (mean± SD; P < 0.001); visual perception skills increased from 54 ± 5% to 78 ± 3% (P < 0.001); practical ultrasound skills improved, and correct LUS was performed in 94%. Subgroup analysis revealed that learning success was independent from the trainees' previous ultrasound experience. Conclusions. THOLUUSE significantly improves theoretical and practical skills for the diagnosis of acute thoracic lesions. We propose to implement THOLUUSE in emergency medicine training. PMID:24369503

Breitkreutz, Raoul; Dutiné, Martina; Scheiermann, Patrick; Hempel, Dorothea; Kujumdshiev, Sandy; Ackermann, Hanns; Seeger, Florian Hartmut; Seibel, Armin; Walcher, Felix; Hirche, Tim Oliver

2013-01-01

61

Bench-to-bedside review: Contrast enhanced ultrasonography - a promising technique to assess renal perfusion in the ICU  

PubMed Central

Acute kidney injury (AKI) is common in critically ill patients and associated with important morbidity and mortality. Although alterations in renal perfusion are thought to play a causative role in the pathogenesis of AKI, there is, to date, no reliable technique that allows the assessment of renal perfusion that is applicable in the ICU. Contrast-enhanced ultrasound (CEUS) is an ultrasound imaging technique that makes use of microbubble-based contrast agents. These microbubbles, when injected into the bloodstream, allow visualization of vascular structures and, with contrast-specific imaging modes, detection of blood flow at the capillary level. Some recent CEUS-derived approaches allow quantification of blood flow in several organs, including the kidney. Current generation ultrasound contrast agents have strong stability and safety profiles. Along with post-marketing surveillance, numerous studies report safe administration of these agents, including in critically ill patients. This review presents information on the physical principles underlying CEUS, the methods allowing blood flow quantification and the potential applications of CEUS in critical care nephrology, currently as a research tool but perhaps in the future as a way of monitoring renal perfusion. PMID:21586101

2011-01-01

62

Ultrasonography evaluation of pelvic masses.  

PubMed

Ultrasonography is the primary imaging modality for evaluation of pelvic masses. Ultrasonography has the advantage of being inexpensive, widely available, and offering superior tissue characterization compared with computed tomography. The real-time imaging ability of ultrasonography and three-dimensional ultrasonography also has the advantage of being able to identify the organ of origin of the pelvic mass. Many pelvic masses have characteristic sonographic appearances that allow confident diagnosis and management. This article reviews the sonographic appearances and management of common pelvic masses encountered in nonpregnant women, and is organized based on anatomic location: uterus, cervix, ovaries, and fallopian tubes. PMID:25444103

Chu, Linda C; Coquia, Stephanie F; Hamper, Ulrike M

2014-11-01

63

Transvaginal color Doppler sonography of ovarian masses with pathological correlation.  

PubMed

This report describes the correlation of pathological findings with transvaginal color Doppler sonography performed preoperatively on 26 ovarian masses. The pulsatility indices of benign lesions (1.9 +/- 0.7) were higher than those of malignant ones (0.7 +/- 0.2) (p = 0.03). Low pulsatility indices (< 1.0) were found in three relatively vascular benign lesions (one immature teratoma, one cystadenoma containing a dermoid cyst, one endometrioma), causing an overlap between the pulsatility indices of some benign and malignant masses. There appears to be significant potential for discrimination between benign and malignant ovarian masses with transvaginal color Doppler sonography. PMID:12797059

Fleischer, A C; Rogers, W H; Rao, B K; Kepple, D M; Jones, H W

1991-07-01

64

[Translabial ultrasonography in pelvic floor prolapse and urinary incontinence diagnostics].  

PubMed

Technological advances in the construction of sonographic devices and increasingly universal access to such tests considerably widens the range of diagnostic application of the sonographic examination. This situation also refers to pelvic organs prolapse. At present, sonographic sets used in everyday obstetrical-gynecological practice allow for insight into the structures forming the female pelvic floor, and the obtained images constitute a valuable addition to the physical examination. Positioning the sonographic transducer on a the perineum enables to visualize the three compartments of the female pelvis minor. After freezing the image, it is possible to assess the position of anatomical structures in relation to bones and designated surfaces, establish mutual distances and measure appropriate angles. Most information can be obtained in this manner within the range of the frontal compartment, whose damage is often linked with urinary incontinence. The examination standards developed so far, including the analysis of the quantitative parameters, greatly minimize the potential subjectivity of the assessment of the existing disorders. Apart from its low costs, the main value of the sonographic examination of the pelvic floor is the possibility to dynamically assess the changes in statics which take place during functional testing. Not only does it have a cognitive significance, but also it allows to adjust the scope of the surgical correction to the existing damages. Thus, indirectly it can contribute to the reduction of a number of subsequent remedial surgeries. Three-dimensional sonography allows to thoroughly examine the construction and functioning of the anal levators and to detect their possible damage. It is the trauma to these muscles--occurring, among others, during childbirth--that is one of the major causes of pelvic organs descent and prolapse in women. Sonographic examination also enables to visualize the artificial material, the use of which is increasingly frequent in the surgical treatment of pelvic organs prolapse. The remedial kits currently in use are not visible in classic X-ray examinations and CT however, they can be easily visualized by means of a sonographic test. This way it is possible to locate the positioned tapes or meshes and to establish their orientation towards the urethra, the bladder and the anus. It is also possible to observe the complications (e.g. hematomas) following the surgical procedures via the transvaginal access. Transperineal sonography is a relatively inexpensive method that may be performed in almost every ultrasonographic laboratory Its value, approaching the MRI diagnostic value in the assessment of the pelvic floor defects and its low cost, place ultrasonography on the first place among the methods of imaging the pelvic and uro-genital diaphragm. The results of diagnostics of pelvic organs prolapse obtained by placing the sonographic head on the patient's perineum may also help in establishing the changes of the support apparatus for the uterus and the vagina, bladder urethra and perineum during functional testing and, thus, to verify the clinically established degree of the prolapse. It seems, also, that this method may be used during peri-urethral injections of specific substances and post-application follow-up, an increasingly frequently employed method of urinary incontinence treatment. PMID:23342899

Pietrus, Mi?osz; Pity?ski, Kazimierz; Ba?ajewicz-Nowak, Marta; Wieche?, Marcin; Knafel, Anna; Ludwin, Artur; Dziechciowski, Marek; Nocu?, Agnieszka

2012-09-01

65

Ultrasonography of the adrenal gland.  

PubMed

A current review of ultrasonographic adrenal imaging is presented with emphasis on the clinical and problematic aspects of adrenal disease in the dog. Examples are presented to illustrate the usefulness of ultrasonography in distinguishing between canine pituitary- and adrenal-dependent hyperadrenocorticism. Adrenal imaging in the cat and ferret are discussed briefly. When coordination of sonographic findings with clinical and biochemical results is implemented properly, ultrasonography becomes a powerful and specific diagnostic tool for adrenal disease. PMID:1802272

Schelling, C G

1991-12-01

66

Intraoperative endovascular ultrasonography  

NASA Astrophysics Data System (ADS)

The early experience using intra-operative endovascular ultrasonography (EU) is reported in eight patients undergoing lower extremity revasularization. In four patients, intra-operative EU successfully characterized inflow stenoses that were inadequately imaged with pre- operative arteriography. Two patients were found to have hemodynamically significant inflow stenoses, and were treated with intra-operative balloon angioplasty followed by repeat EU. The other two patients were found to have non-hemodynamically significant inflow stenoses requiring no treatment. Additional outflow procedures were required in all four patients. In the remaining four patients, EU was used to evaluate the completeness of TEC rotary atherectomy, of Hall oscillatory endarterectomy, of thrombectomy of the superficial femoral and popliteal arteries, and of valve lysis during in situ saphenous vein grafting, respectively. In the latter case, the valve leaflets were not clearly seen. In the other cases, EU assisted the surgeon. Angioscopy and angiography were available for comparison. In one case, angioscopy failed because of inability to clear the field while inspecting retrograde the limb of an aorto-bi-femoral graft. EU however was possible. No complications of EU occurred. EU is a safe procedure indicated when characterization of a lesion is needed prior to an intervention or when evaluation of the intervention's success is desired. We did not find it useful in valve lysis for in-site grafting.

Eton, Darwin; Ahn, Samuel S.; Baker, J. D.; Pensabene, Joseph; Yeatman, Lawrence S.; Moore, Wesley S.

1991-05-01

67

Carpal Tunnel Syndrome Assessment with Ultrasonography: Value of Inlet-to-Outlet Median Nerve Area Ratio in Patients versus Healthy Volunteers  

PubMed Central

Objective To evaluate the diagnostic value of the Inlet-to-outlet median nerve area ratio (IOR) in patients with clinically and electrophysiologically confirmed carpal tunnel syndrome (CTS). Methods Forty-six wrists in 46 consecutive patients with clinical and electrodiagnostic evidence of CTS and forty-four wrists in 44 healthy volunteers were examined with ultrasonography. The cross-sectional area (CSA) of the median nerve was measured at the carpal tunnel inlet (the level of scaphoid-pisiform) and outlet (the level of the hook of the hamate), and the IOR was calculated for each wrist. Ultrasonography and electrodiagnostic tests were performed under blinded conditions. Electrodiagnostic testing combined with clinical symptoms were considered to be the gold standard test. Receiver operating characteristic (ROC) curves were used to evaluate the diagnostic value between the inlet CSA and IOR. Results The study population included 16 men and 30 women (mean age, 45.3 years; range, 18–83 years). The control population included 18 men and 26 women (mean age, 50.4 years; range, 18–79 years). The mean inlet CSA was 8.7 mm2 in healthy controls and 14.6mm2 in CTS group (P<0.001). The mean IOR in healthy volunteers (1.0) was smaller than that in patients (1.6, P<0.001). Receiver operating characteristic analysis revealed a diagnostic advantage to using the IOR rather than the inlet CSA (P<0.01). An IOR cutoff value of ? 1.3 would yield 93% specificity and 91% sensitivity in the diagnosis of CTS. Conclusion The IOR of median nerve area promises to be an effective means in the diagnosis of CTS. A large-scale, randomized controlled trial is required to determine how and when this parameter will be used. PMID:25617835

Liu, Fang; Zhu, Jiaan; Ye, Dongmei; Feng, Xianxuan; Xu, Yiming; Wang, Gang; Bai, Yuehong

2015-01-01

68

Transvaginal Ultrasound in the Diagnosis of Diffuse Adenomyosis  

Microsoft Academic Search

The purpose of this study is to evaluate the diagnostic capability of transvaginal ultrasound in detecting diffuse adenomyosis. One hundred and seventy-five women, mean age 45.8 years (range 37–62), were studied by TV ultrasound before hysterectomy for benign uterine pathology. The sonographer diagnosed adenomyosis in 19 patients, whereas the pathologist diagnosed adenomyosis in 15 women making ex novo diagnoses in

Enea Atzori; Caterina Tronci; Luigi Sionis

1996-01-01

69

Fundamentals of diagnostic ultrasonography.  

PubMed

Diagnostic ultrasonography uses acoustical waves in the frequency range of 1 to 20 MHz. These waves obey Snell's law of reflection and refraction, which are rules ordinary to wave behavior. In ultrasound, the analogy to momentum is acoustic impedance. The acoustic impedance, Z, is equal to the density, p, times velocity, v. The ultrasound transducer converts electrical energy into ultrasound energy and vice versa. The transducer usually consists of a piezoelectric crystal composed of such ceramic materials as barium titanate, lead titanate, zirconate, or lead metaniobate. Five basic ultrasonic scanning modes play the major roles in clinical applications. A-mode, or amplitude-mode, scanning measures the tissue discontinuity along the scan axis. B-mode scanning produces a two-dimensional image of the tissue under study by combining A-mode signals from various directions through mechanical transducer scanning. M-mode, or time motion scanning, is an extension of the A-mode approach in which a single stationary transducer is used. The depth of the echo is displayed on the vertical axis; the brightness of the oscilloscope display is modulated by the echo amplitude. Real-time scanning, or rapid B-scanning, techniques provide continuous data acquisition at a rate sufficient to give the impression of the instantaneous motion of moving structures. Doppler scanning relies on the presence of motion. The Doppler effect occurs when there is relative motion between the source of sound and the receiver of the sound, causing a change in the detected frequency of the sound source. PMID:2261584

Noce, J P

1990-01-01

70

A modified posterior pelvic exenteration technique in a woman: (a simplified method with using transvaginal way).  

PubMed

We represent a simplified surgical method for posterior pelvic exenteration in a woman by using the transvaginal way in addition to classic abdominal approach. A modified posterior pelvic exenteration technique was performed in a patient with bulky pelvic tumor. The transvaginal way was used for the deep perineal dissection when the abdominal dissection was arrested. An ultralow coloanal anastomosis was completed by using the transvaginal way. After the recovery period, the patient was discharged from hospital without any complication. The transvaginal access should be reminded in the circumstances of the abdominal dissection arrested in posterior pelvic exenteration operations in women. PMID:24082597

Yücesoy, Ali Naki; Kad?o?lu, M Burak; Gönen, Emre

2012-10-01

71

Antiretroviral therapy and pregnancy: effect on cortical bone status of human immunodeficiency virus-infected Caucasian women as assessed by quantitative ultrasonography.  

PubMed

Treatment with antiretroviral agents (ARVs) during pregnancy is important to prevent mother-to-child transmission of the human immunodeficiency virus (HIV), but their use has been associated with low bone mineral density in adult patients. Currently, there are no data regarding the bone status of HIV-infected women who received ARV during pregnancy. The aim of this study was to evaluate cortical bone status at delivery in a group of HIV-infected women who received ARV during pregnancy and to monitor the changes occurring during the first year postpartum. We studied 33 HIV-infected and 116 HIV-uninfected healthy Caucasian women within 4 days from delivery. Follow-up measurements were performed at 4 and 12 months postpartum in 17 HIV-infected and 55 healthy women. Cortical bone status was evaluated by quantitative ultrasonography at the mid-tibia, and bone measurements were expressed as the speed of sound (SOS). HIV-infected women after delivery had a median SOS of 3,985 (3,567-4,242) m/s, while the median SOS of healthy women was 4,025 (3,643-4,250) m/s. The difference was not significant (t = 0.39, P = 0.69). No significant differences were observed between ARV-exposed and control subjects at 4 and 12 months. Our data suggest that ARV during pregnancy and the first year after delivery does not affect negatively cortical bone status. PMID:23307187

Mora, Stefano; Diceglie, Cecilia; Viganò, Alessandra; Giacomet, Vania; Manfredini, Valeria; Stucchi, Sara; Fabiano, Valentina; Mameli, Chiara; Coletto, Sonia; Zuccotti, Gian V

2013-04-01

72

The use of transvaginal ultrasound to aspirate bilateral hydrosalpinges prior to in vitro fertilization: A case report  

Microsoft Academic Search

Transvaginal ultrasound has recently been introduced diagnostically for follicular monitoring, early pregnancy localization (1), pelvic structure identification, early fetal development (2), detection of ovarian enlargement in postmenopausal women (3), and detection of endometrial carcinoma (4). Transvaginal ultrasound has had a major impact on patient monitoring and treatment for in vitro fertilization and embryo transfer (IVF\\/ET). Therapeutically transvaginal ultrasound has been

Jeffrey B. Russell; Zalo Rodriguez; Jeffry I. Komins

1991-01-01

73

Transvaginal versus transabdominal Doppler auscultation of fetal heart activity: A comparative study  

Microsoft Academic Search

OBJECTIVE: Our purpose was to determine whether transvaginal Doppler auscultation is more sensitive than transabdominal auscultation for the detection of fetal heart rate in the first trimester of pregnancy. STUDY DESIGN: In a prospective study 141 patients between 6 weeks and 11 weeks 6 days of gestation underwent both transvaginal and transabdominal Doppler evaluation by use of continuous-wave Doppler instruments

Avick G. Mitra; Sherry L. Laurent; Jeanette E. Moore; George F. Blanchard; Nancy C. Chescheir

1996-01-01

74

Technical aspects of transvaginal ultrasound-guided follicular aspiration in cows  

Microsoft Academic Search

A 7.5 MHz rectal transducer adapted for transvaginal use was compared with a human microcurvilinear 6 MHz transvaginal transducer for follicular aspiration in cows. Some of the problems encountered while developing an accurate and repeatable technique are discussed, including the preparation of the cow, and the selection of the needle and suction apparatus. Proficiency in the retrieval of oocytes was

CA Scott; L Robertson; RT de Moura; C Paterson; JS Boyd

1994-01-01

75

Transvaginal Versus Anal Endosonography for Detecting Damage to the Anal Sphincter  

Microsoft Academic Search

OBJECTIVE. We undertook this study to establish the accuracy of transvaginal endosonography for detecting damage to the anal sphincter. SUBJECTS AND METHODS. Anal endosonography was performed in 47 parous patients and one nulliparous patient using a sonographic scanner, an 1850 endoprobe, and a 10-MHz trans- ducer protected by a water-filled hard plastic cone. This procedure was followed by transvaginal sonography

Andrea Frudinger; Clive I. Bartram; Michael A. Kamm

76

[Ultrasonography for carpal tunnel syndrome].  

PubMed

Ultrasonography in cases of carpal tunnel syndrome is described with respect to the following aspects: (1) imaging technique; (2) image characteristics; (3) detection of pathophysiology; (4) diagnosis of idiopathic cases; (5) screening of local pathologies (space-occupying lesions, tenosynovitis, and bone and joint abnormalities), incomplete release, and anatomic variations; and (6) role in facilitating minimally-invasive surgery. PMID:24607945

Nakamichi, Kenichi

2014-03-01

77

Cervical assessment in women with hysteroscopic uterine septum resection: a retrospective cohort study.  

PubMed

Abstract Objective: To estimate whether cervical length measured by transvaginal ultrasonography in women with a history of hysteroscopic uterine septum resection predicts spontaneous preterm birth <35 weeks' gestation. Methods: This retrospective cohort study compared women who had undergone hysteroscopic metroplasty, and were subsequently pregnant with singleton gestations delivered January 2003 to December 2012, to a low-risk control group. Transvaginal ultrasonographic cervical lengths were measured 16-30 weeks' gestation. The primary outcome was spontaneous preterm birth <35 weeks' gestation and the primary exposure variable of interest was cervical length. Results: Women with a uterine septum resected (N?=?24) had a shorter cervical length (2.90?cm) than the low-risk control group (N?=?141, 4.31?cm, p?transvaginal ultrasonographic cervical length assessment is of benefit. PMID:25041212

Crane, Joan M G; Healey, Sarah; O'Grady, Terry; Splinter, Karen; Hutchens, Donna

2014-08-01

78

Completely transvaginal NOTES cholecystectomy using magnetically anchored instruments  

Microsoft Academic Search

Introduction  Natural orifice translumenal endoscopic surgery (NOTES) is an evolving field and suitable instruments are lacking. The purpose\\u000a of this study was to perform transvaginal cholecystectomies using instruments incorporated into a magnetic anchoring and guidance\\u000a system (MAGS).\\u000a \\u000a \\u000a \\u000a Methods  Non-survival procedures were conducted in pigs (n = 4). Through a vaginotomy created under direct vision, a rigid access port was inserted into the peritoneal cavity

Daniel J. Scott; Shou-jiang Tang; Raul Fernandez; Richard Bergs; Mouza T. Goova; Ilia Zeltser; Farid J. Kehdy; Jeffrey A. Cadeddu

2007-01-01

79

Symptom Resolution After Operative Management of Complications From Transvaginal Mesh  

PubMed Central

OBJECTIVE Complications from transvaginal mesh placed for prolapse often require operative management. The aim of this study is to describe the outcomes of vaginal mesh removal. METHODS A retrospective review of all patients having surgery by the Urogynecology group in the Department of Obstetrics & Gynecology at our institution for a complication of transvaginal mesh placed for prolapse was performed. Demographics, presenting symptoms, surgical procedures, and postoperative symptoms were abstracted. Comparative statistics were performed using the chi-squared or Fisher’s exact test with significance at p<0.05. RESULTS Between January 2008 and April 2012, 90 patients had surgery for complications related to vaginal mesh and 84 had follow-up data. The most common presenting signs and symptoms were: mesh exposure 62% (n=56), pain 64% (n=58), and dyspareunia 48% (n=43). During operative management, mesh erosion was encountered unexpectedly in a second area of the vagina in 5% (n=4), in the bladder in 1% (n=1), and in the bowel in 2% (n=2). After vaginal mesh removal, 51% (n=43) had resolution of all presenting symptoms. Mesh exposure was treated successfully in 95% of cases, while pain was only successfully treated in 51% of women. CONCLUSION Removal of vaginal mesh is helpful in relieving symptoms of presentation. Patients can be reassured that exposed mesh can almost always be successfully managed surgically, but pain and dyspareunia are only resolved completely in half of cases. PMID:24463673

Crosby, Erin C.; Abernethy, Melinda; Berger, Mitchell B.; DeLancey, John O.; Fenner, Dee E.; Morgan, Daniel M.

2014-01-01

80

Thyroid Ultrasonography: Pitfalls and Techniques  

PubMed Central

Thyroid ultrasonography (US) plays a key role in the diagnosis and management of thyroid-related diseases. The aim of this article was to illustrate various pitfalls that can occur in utilizing thyroid US and techniques to prevent them. In this article, we present cases demonstrating the common pitfalls associated with US equipment, performance, normal thyroid structures, misinterpretations, and surrounding structures. Knowledge of these areas is essential to avoid misdiagnosis or improper disease management. PMID:24642650

Choi, Seon Hyeong; Kim, Eun-Kyung; Kim, Soo Jin

2014-01-01

81

Transvaginal Aspiration of Ovarian Cysts: Long-Term Follow-up  

SciTech Connect

Background and purpose. Transvaginal aspiration of ovarian cysts has been advocated as a viable alternative to surgery in patients who are high-risk surgical candidates. We describe a retrospective study evaluating the results of transvaginal aspirations of benign ovarian cysts in patients at increased surgical risk, focusing on long-term follow-up for recurrence of the cyst and/or development of malignancy. Methods. Twenty-four women with ovarian cysts underwent 34 transvaginal drainages between October 1998 and December 2004. All patients were referred following diagnosis of a persistent ovarian cyst with a benign appearance on ultrasound. All patients were unsuitable candidates for surgery (history of previous pelvic surgery, n = 21; high risk for anesthesia, n = 1; and unsuitable for laparoscopy due to obesity, n = 2). Patients with a history of pregnancy, acute abdominal symptoms, or previous gynecologic malignancy were excluded. A 20G x 20 cm Chiba needle was used for transvaginal aspiration using an endocavity probe (Acuson XP, Mountain View, CA, USA; Siemens Sololine, Erlangen, Germany) and intravenous sedoanalgesia. Cysts were aspirated to dryness. Results. Long-term follow-up of patients was performed and revealed a recurrence rate of 75%. Eighty-three percent of cysts on the left and 42% of those on the right recurred. Nine of 15 (60%) patients with recurrence required further intervention. Two of 9 underwent surgical intervention only, 4 of 9 had repeat transvaginal aspiration(s) performed, and 3 of 9 had a combination of both transvaginal aspiration and surgery. No patient developed ovarian malignancy. Conclusion. Transvaginal cyst aspiration has many advantages including short hospital stay, rapid recovery, excellent patient tolerance, and a low rate of procedure-related complications. Our study demonstrates that ovarian cyst recurrence following transvaginal drainage is a more significant problem than previously documented, especially if the cyst is on the left side. However, when recurrences do occur, repeat transvaginal aspirations may be considered in the symptomatic patient.

Duke, D.; Colville, J.; Keeling, A.; Broe, D.; Fotheringham, T.; Lee, M.J. [Beaumont Hospital, Department of Academic Radiology (Ireland)], E-mail: mlee@rcsi.ie

2006-06-15

82

Clinical complications after transvaginal oocyte retrieval: a retrospective analysis.  

PubMed

There are little systematic data reported in the literature on complications observed after transvaginal oocyte retrieval (OR) guided by ultrasound. We report our experience in 542 in vitro fertilisation cycles. The frequency of severe complications in our patients was 0.72%; of these, two cases were bronchospasm during anaesthesia (0.36%) and two were cases of intraperitoneal bleeding (0.36%); minor vaginal bleeding was the most frequent complication (18.08%), which was treated easily. Through this retrospective analysis, it is evident that clinical suspicion is of particular importance in detecting post-OR complications on one hand, but on the other these complications are rare and most are treated conservatively. PMID:23259882

Siristatidis, C; Chrelias, C; Alexiou, A; Kassanos, D

2013-01-01

83

TRANSVAGINAL SONOGRAPHIC CERVICAL LENGTH FOR THE PREDICTION OF SPONTANEOUS PRETERM BIRTH IN TWIN PREGNANCIES: A SYSTEMATIC REVIEW AND METAANALYSIS  

PubMed Central

Objective To assess the accuracy of transvaginal sonographic cervical length (CL) in predicting spontaneous preterm birth in women with twin pregnancies. Study design Systematic review and metaanalysis of predictive test accuracy. Results Twenty-one studies (16 in asymptomatic women and 5 in symptomatic women) with a total of 3523 women met the inclusion criteria. Among asymptomatic women, a CL ?20 mm 20-24 weeks’ gestation was the most accurate in predicting preterm birth <32 and <34 weeks’ gestation (pooled sensitivities, specificities, and positive and negative likelihood ratios of 39% and 29%, 96% and 97%, 10.1 and 9.0, and 0.64 and 0.74, respectively). A CL ?25 mm 20-24 weeks’ gestation had a pooled positive likelihood ratio of 9.6 to predict preterm birth <28 weeks’ gestation. The predictive accuracy of CL for preterm birth was low in symptomatic women. Conclusion Transvaginal sonographic CL 20-24 weeks’ gestation is a good predictor of spontaneous preterm birth in asymptomatic women with twin pregnancies. PMID:20576253

CONDE-AGUDELO, Agustín; ROMERO, Roberto; HASSAN, Sonia S.; YEO, Lami

2011-01-01

84

Transvaginal Hydrolaparoscopic Ovarian Drilling Using Bipolar Electrosurgery to Treat Anovulatory Women with Polycystic Ovary Syndrome  

Microsoft Academic Search

Study ObjectiveTo verify the value, feasibility, and reliability of transvaginal hydrolaparoscopic ovarian drilling using the bipolar VersaPoint system to treat clomiphene-resistant, anovulatory women with polycystic ovary syndrome.

Alessandro Casa; Francesco Sesti; Massimiliano Marziali; Lorenza Gulemì; Emilio Piccione

2003-01-01

85

How safe is diagnostic ultrasonography?  

PubMed Central

Health care workers and patients alike are concerned about the safety of diagnostic ultrasonography in clinical practice. Evidence published to date on the immediate and possible long-term biologic effects of exposure to ultrasound in diagnostic procedures is reviewed in this paper. No harmful effect in the human fetus, child or adult following the diagnostic use of pulsed ultrasound has been reported. However, the question of long-term biologic effects cannot yet be answered. Continued vigilance and further research are required. PMID:6378349

Brown, B S

1984-01-01

86

Transvaginal Aspiration of Ovarian Cysts: Long-Term Follow-up  

Microsoft Academic Search

Background and purpose. Transvaginal aspiration of ovarian cysts has been advocated as a viable alternative to surgery in patients who are high-risk surgical candidates. We describe a retrospective study evaluating the results of transvaginal aspirations of benign ovarian cysts in patients at increased surgical risk, focusing on long-term follow-up for recurrence of the cyst and\\/or development of malignancy. Methods. Twenty-four

D. Duke; J. Colville; A. Keeling; D. Broe; T. Fotheringham; M. J. Lee

2006-01-01

87

Use of ultrasonography in ulnar nerve entrapment surgery—a prospective study  

Microsoft Academic Search

The purpose of our study is to assess the usefulness of high-resolution ultrasonography in observing the morphology and dynamics\\u000a of the ulnar nerve in the cubital tunnel and also the efficacy of ultrasonography in a more accurate diagnosis and appropriate\\u000a surgical treatment decision. Cross-sectional area of the ulnar nerves of 40 healthy volunteers in the control group were measured\\u000a bilaterally

Murat Kutlay; Ahmet Çolak; Hakan ?im?ek; Ersin Öztürk; Mehmet Güney ?enol; K?vanç Topuz; Mehmet Nusret Demircan

2009-01-01

88

Methods of Estimation of Visceral Fat: Advantages of Ultrasonography  

Microsoft Academic Search

Objective: To compare methods for the assessment of visceral fat with computed tomography (CT) and establish cutoffs to define visceral obesity based on such alternative methods.Research Methods and Procedures: One hundred women (50.4 ± 7.7 years; BMI 39.2 ± 5.4 kg\\/m2) underwent anthropometric evaluation, bioelectrical impedance, DXA, abdominal ultrasonography (US), and CT scan.Results: Waist circumference, waist-to-hip ratio (WHR), and US-determined

Fernando F. Ribeiro-Filho; Alessandra N. Faria; Sergio Azjen; Maria-Teresa Zanella; Sandra R. G. Ferreira

2003-01-01

89

Ultrasonography for the Evaluation of Visceral Fat and Cardiovascular Risk  

Microsoft Academic Search

Visceral fat accumulation is associated with increased cardiovascular risk. Clinical evaluation of visceral fat is limited because of the lack of reliable and low-cost methods. To assess the correlation between ultrasonography and computed tomography (CT) for the evaluation of visceral fat, 101 obese women, age 50.567.7 years with a body mass index of 39.265.4 kg\\/m2, were submitted to ultrasonograph and

Fernando F. Ribeiro-Filho; Alessandra N. Faria; Sérgio Ajzen; Artur B. Ribeiro; Maria Teresa Zanella; Sandra R. G. Ferreira

90

Mass-forming pancreatitis: Value of contrast-enhanced ultrasonography  

Microsoft Academic Search

AIM: To assess the utility of contrast-enhanced ultrasonography (CEUS) with a second-generation contrast medium in the differential diagnosis between mass-forming pancreatitis and pancreatic carcinoma. METHODS: From our radio-pathology database, we retrieved all the patients affected by mass-forming pancreatitis or pancreatic carcinoma who underwent CEUS. We evaluated the results of CEUS in the study of the 173 pancreatic masses considering the

D'Onofrio M; Zamboni G; Tognolini A; Malagò R; Faccioli N; Luca Frulloni; Roberto Pozzi Mucelli

91

Follow-up evaluation with ultrasonography of peripheral nerve injuries after an earthquake  

PubMed Central

Published data on earthquake-associated peripheral nerve injury is very limited. Ultrasonography has been proven to be efficient in the clinic to diagnose peripheral nerve injury. The aim of this study was to assess the role of ultrasound in the evaluation of persistent peripheral nerve injuries 1 year after the Wenchuan earthquake. Thirty-four patients with persistent clinical symptoms and neurologic signs of impaired nerve function were evaluated with sonography prior to surgical repair. Among 34 patients, ultrasonography showed that 48 peripheral nerves were entrapped, and 11 peripheral nerves were disrupted. There was one case of misdiagnosis on ultrasonography. The concordance rate of ultrasonographic findings with those of surgical findings was 98%. A total of 48 involved nerves underwent neurolysis and the symptoms resolved. Only five nerves had scar tissue entrapment. Preoperative and postoperative clinical and ultrasonographic results were concordant, which verified that ultrasonography is useful for preoperative diagnosis and postoperative evaluation of injured peripheral nerves. PMID:25206859

Lu, Man; Wang, Yue; Yue, Linxian; Chiu, Jack; He, Fanding; Wu, Xiaojing; Zang, Bin; Lu, Bin; Yao, Xiaoke; Jiang, Zirui

2014-01-01

92

Ultrasonography in the evaluation of renal scarring using DMSA scan as the gold standard.  

PubMed

Dimercaptosuccinic acid (DMSA) renal scan is presently the technique of choice for assessing renal scars. Recent advances suggest that ultrasonography could replace DMSA scan for this purpose. This paper describes the experience of a tertiary pediatric referral hospital performing ultrasonography and DMSA scans in the assessment of renal scarring. Investigations were conducted 3-6 months after patients presented with urinary tract infection (UTI). Results were extracted from the radiology information system and recorded for analysis. All children with a UTI who had undergone DMSA and ultrasound examination on the same day between January 1995 and December 1999 were included; 930 kidneys were compared. DMSA scan was utilized as the reference method. When used to detect focal renal scarring, ultrasonography had a sensitivity of 5.2%, specificity of 98.3%, a positive predictive value (PPV) of 50% and a negative predictive value (NPV) of 75.8%. When used to detect diffuse renal scarring, ultrasonography had a sensitivity of 47.2%, specificity of 91.8%, PPV of 60.8% and NPV of 86.6%. Our results demonstrate that although ultrasonography has a good specificity for the detection of renal scarring compared with DMSA, it has low sensitivity, PPV and NPV. Ultrasonography cannot be substituted for DMSA scan in the evaluation of focal renal scarring. PMID:14669099

Moorthy, Ima; Wheat, Deirdre; Gordon, Isky

2004-02-01

93

3D transvaginal ultrasound imaging for identification of endometrial abnormality  

NASA Astrophysics Data System (ADS)

A multi-center study has previously evaluated the use of 2-dimensional transvaginal ultrasound (TVS) to measure the thickness of the endometrium as a risk indicator for endometrial abnormality in women with postmenopausal bleeding. In this paper we present methods using 3-dimensional TVS in order to improve the measurement, shape analysis and visualization of the endometrium. Active contour techniques are applied to identify the endometrium in a 3D dataset. The shape of the endometrium is then visualized and utilized to do quantitative measurements of the thickness. The voxels inside the endometrium are volume rendered in order to emphasize inhomogeneities. Since these inhomogeneities can exist both on the outside and the inside of the endometrium, the rendering algorithm has a controllable opacity function. A 3-dimensional distance transform is performed on the data volume measuring the shortest distance to the detected endometrium border for each voxel. This distance is used as a basis for opacity computations which allows the user to emphasize different regions of the endometrium. In particular, the opacity function can be computed such that regions that violate the risk indicator for the endometrium thickness are highlighted.

Olstad, Bjoern; Berg, Sevald; Torp, Anders H.; Schipper, Klaus P.; Eik-Nes, Sturla H.

1995-05-01

94

Transvaginal Chorionic Villus Sampling Using Transabdominal Ultrasound Guidance: A New Technique for First-Trimester Prenatal Diagnosis  

Microsoft Academic Search

Transvaginal chorionic villus sampling (CVS) using concurrent transabdominal ultrasound guidance was performed in 20 women who desired CVS but could not be offered transcervical or transabdominal approaches because of uterine position and placental location. Satisfactory amounts of chorionic villi were obtained in all 20 cases with no maternal discomfort, an occurrence that contrasts with our experience in transvaginal CVS using

Lee P. Shulman; Joe Leigh Simpson; Sherman Elias; Richard E. Felker; Donald S. Emerson; Owen. P Phillips

1993-01-01

95

Bedside ultrasonography-Applications in critical care: Part II  

PubMed Central

Point of care ultrasonography, performed by acute care physicians, has developed into an invaluable bedside tool providing important clinical information with a major impact on patient care. In Part II of this narrative review, we describe ultrasound guided central venous cannulation, which has become standard of care with internal jugular vein cannulation. Besides improving success rates, real-time guidance also significantly reduces the incidence of complications. We also discuss compression ultrasonography - a quick and effective bedside screening tool for deep vein thrombosis of the lower extremity. Abdominal ultrasound offers vital clues in the emergency setting; in the unstable trauma victim, a focused examination may provide immediate answers and has largely superseded diagnostic peritoneal lavage in diagnosing intraperitoneal bleed. From estimation of intracranial pressure to transcranial Doppler studies, ultrasound is becoming increasingly relevant to neurocritical care. Ultrasound may also help with airway management in several situations, including percutaneous tracheostomy. Clearly, bedside ultrasonography has become an indispensable part of intensive care practice – in the rapid assessment of critically ill-patients as well as in enhancing the safety of invasive procedures. PMID:24987237

Chacko, Jose; Brar, Gagan

2014-01-01

96

Bedside ultrasonography: Applications in critical care: Part I  

PubMed Central

There is increasing interest in the use of ultrasound to assess and guide the management of critically ill patients. The ability to carry out quick examinations by the bedside to answer specific clinical queries as well as repeatability are clear advantages in an acute care setting. In addition, delays associated with transfer of patients out of the Intensive Care Unit (ICU) and exposure to ionizing radiation may also be avoided. Ultrasonographic imaging looks set to evolve and complement clinical examination of acutely ill patients, offering quick answers by the bedside. In this two-part narrative review, we describe the applications of ultrasonography with a special focus on the management of the critically ill. Part I explores the utility of echocardiography in the ICU, with emphasis on its usefulness in the management of hemodynamically unstable patients. We also discuss lung ultrasonography - a vastly underutilized technology for several years, until intensivists began to realize its usefulness, and obvious advantages over chest radiography. Ultrasonography is rapidly emerging as an important tool in the hands of intensive care physicians. PMID:24914259

Chacko, Jose; Brar, Gagan

2014-01-01

97

Portable ultrasonography in mass casualty incidents: The CAVEAT examination  

PubMed Central

Ultrasonography used by practicing clinicians has been shown to be of utility in the evaluation of time-sensitive and critical illnesses in a range of environments, including pre-hospital triage, emergency department, and critical care settings. The increasing availability of light-weight, robust, user-friendly, and low-cost portable ultrasound equipment is particularly suited for use in the physically and temporally challenging environment of a multiple casualty incident (MCI). Currently established ultrasound applications used to identify potentially lethal thoracic or abdominal conditions offer a base upon which rapid, focused protocols using hand-carried emergency ultrasonography could be developed. Following a detailed review of the current use of portable ultrasonography in military and civilian MCI settings, we propose a protocol for sonographic evaluation of the chest, abdomen, vena cava, and extremities for acute triage. The protocol is two-tiered, based on the urgency and technical difficulty of the sonographic examination. In addition to utilization of well-established bedside abdominal and thoracic sonography applications, this protocol incorporates extremity assessment for long-bone fractures. Studies of the proposed protocol will need to be conducted to determine its utility in simulated and actual MCI settings. PMID:22474622

Stawicki, Stanislaw Peter; Howard, James M; Pryor, John P; Bahner, David P; Whitmill, Melissa L; Dean, Anthony J

2010-01-01

98

Obese women's perception of bariatric trans-vaginal NOTES.  

PubMed

Much of the discussion pertaining to natural orifice transluminal endoscopic surgery (NOTES) focuses on technical issues, with little attention to women's perception and to their willingness to consent to this surgery, especially in the field of obesity. Aim of this study was to evaluate obese women's perception of NOTES and trans-vaginal access. Sixty two obese patients undergoing bariatric surgery were given a written description of NOTES with an anonymous questionnaire exploring their concerns and opinions regarding this technique. The risk of complications was the most important aspect with regard to surgical procedures for 87.1% of patients, while the aesthetic result counted only for 16.1%; none of the patients would accept an increased risk of surgical complications for a better aesthetic result, and 74.2% of them would prefer a standardized traditional surgical approach. Nulliparous women were more concerned about the potentially negative effects of NOTES on fertility than multiparous women and younger women were more worried about the effects on sexual function than older women. 83.9% of patients refusing NOTES stated that the main reason for their refusal was the lack of definitive data on the beneficial effects. Bariatric NOTES potentially offers obese women a scarless intervention, but only a few obese women expressed worries about the cosmetic/aesthetic effects of surgery, while most of them were worried about effects on future fertility and sexual life. Our study highlights a strong need for early reporting of outcome data to enlighten patients about this new approach to bariatric surgery. PMID:22170394

Rocchietto, Stefano; Scozzari, Gitana; Arezzo, Alberto; Morino, Mario

2012-03-01

99

Transvaginal Aspiration of Ovarian Cysts: Long-Term Follow-up  

Microsoft Academic Search

Background and purpose  Transvaginal aspiration of ovarian cysts has been advocated as a viable alternative to surgery in patients who are high-risk\\u000a surgical candidates. We describe a retrospective study evaluating the results of transvaginal aspirations of benign ovarian\\u000a cysts in patients at increased surgical risk, focusing on long-term follow-up for recurrence of the cyst and\\/or development\\u000a of malignancy.\\u000a \\u000a \\u000a \\u000a Methods  Twenty-four women with

D. Duke; J. Colville; A. Keeling; D. Broe; T. Fotheringham; M. J. Lee

2006-01-01

100

Heterotopic cervical pregnancy successfully treated with transvaginal ultrasound-guided aspiration and cervical-stay sutures  

Microsoft Academic Search

Objective: To present a case of a heterotopic cervical pregnancy successfully treated with transvaginal ultrasound-guided aspiration and cervical-stay sutures.Design: Case report.Setting: Tertiary academic IVF program.Patient(s): A 35-year-old woman who conceived from IVF-ET treatment at 5.5 weeks of gestation.Intervention(s): Transvaginal ultrasound–guided aspiration of the cervical pregnancy followed by cervical-stay sutures to control hemorrhage after aspiration.Main Outcome Measure(s): Recovery of the patient,

Dehan Chen; Isaac Kligman; Zev Rosenwaks

2001-01-01

101

Clinical usefulness of quantitative evaluation of visceral fat by ultrasonography  

Microsoft Academic Search

Purpose  The aim of this work was to evaluate the usefulness of a proposed method for visceral fat volume assessment by ultrasonography\\u000a (US) in identifying those at risk of metabolic syndrome, and also to establish the most suitable cutoff level of waist circumference\\u000a for the diagnosis of visceral adiposity.\\u000a \\u000a \\u000a \\u000a Methods  One hundred and fifty-two outpatients with metabolic diseases such as hypertension, diabetes,

Seiji Nakanishi; Bunzo Matsuura; Masashi Hirooka; Teruhisa Ueda; Tetsuji Niiya; Shinya Furukawa; Masanori Abe; Yoichi Hiasa; Yoshikazu Kubo; Morikazu Onji

2007-01-01

102

Prenatal Imaging: Ultrasonography and Magnetic Resonance Imaging  

PubMed Central

The Eunice Kennedy Shriver National Institute of Child Health and Human Development held a workshop on September 18–19, 2006, to summarize the available evidence on the role and performance of current fetal imaging technology and to establish a research agenda. Ultrasonography is the imaging modality of choice for pregnancy evaluation due to its relatively low cost, real-time capability, safety, and operator comfort and experience. First-trimester ultrasonography extends the available window for fetal observation and raises the possibility of performing an early anatomic survey. Three-dimensional ultrasonography has the potential to expand the clinical application of ultrasonography by permitting local acquisition of volumes and remote review and interpretation at specialized centers. New advances allow performance of fetal magnetic resonance imaging (MRI) without maternal or fetal sedation, with improved characterization and prediction of prognosis of certain fetal central nervous system anomalies such as ventriculomegaly when compared with ultrasonography. Fewer data exist on the usefulness of fetal MRI for non–central nervous system anomalies. PMID:18591320

Reddy, Uma M.; Filly, Roy A.; Copel, Joshua A.

2009-01-01

103

Transvaginal ovum pick-up (OPU) in the cow: A new disposable needle guidance system  

Microsoft Academic Search

A study was conducted to modify the routinely used ovum pick up (OPU) devices to permit use of disposable needles and to simplify the technique and to make it more economical and practical to use. Long nondisposable needles are commonly used in transvaginal OPU despite several disadvantages. A new OPU device was developed using 19-g disposable needles to eliminate these

P. E. J. Bols; J. M. M. Vandenheede; A. Van Soom; A. de Kruif

1995-01-01

104

Ten-Year Experience With Transvaginal Vesicovaginal Fistula Repair Using Tissue Interposition  

Microsoft Academic Search

PurposeThe success rate of vesicovaginal fistula repair is improved by tissue interposition. The Martius flap produces reliable results but it has increased morbidity. A peritoneal flap is easily created with minimal morbidity and it can be used for proximal fistulas. We describe our 10-year experience with tissue interposition for transvaginal repair of vesicovaginal fistulas.

KARYN SCHLUNT EILBER; ELIZABETH KAVALER; LARISSA V. RODRÍGUEZ; NIRIT ROSENBLUM; SHLOMO RAZ

2003-01-01

105

Simple laparoscopic nephrectomy assisted by transvaginal NOTES and using standard laparoscopic instruments  

Microsoft Academic Search

Introduction: Natural orifice transluminal endoscopic surgery (NOTES™) is an emerging technology that allows for performing surgical procedures without use of abdominal incisions. There are however limitations in equipment available for mimicking traditional surgery. Our objective was to report our experience with the transvaginal NOTES nephrectomy technique using standard laparoscopic instruments. Materials and Methods: Two female patients aged 23 and 26

Octavio A. Castillo; Ivar Vidal-Mora; Rodrigo Campos; Alejandro Fonerón; Miguel Feria-Flores; Reinaldo Gómeza; Francisco Sepúlvedaa

106

Rectal carcinoma: Preoperative staging and detection of postoperative local recurrence with transrectal and transvaginal ultrasound  

Microsoft Academic Search

Transrectal ultrasound (TRUS) was performed preoperatively in 35 patients with rectal carcinoma and the results were compared to histologic findings. In the same group, postoperative studies were performed in 22 patients; in women, transvaginal ultrasound (TVUS) was added to the transrectal study. According to Duke's classification modified by Astler-Coller, in relation to the T parameter, TRUS correctly staged 33 of

Michele Scialpi; Rosanna Andreatta; Silvio Agugiaro; Franco Zottele; Mauro Niccolini; Francesco Dalla Palma

1993-01-01

107

Transvaginal Sonography as a Screening Method for the Detection of Early Ovarian Cancer  

Microsoft Academic Search

From December 1987 to December 1993, 6470 women underwent screening with transvaginal sonography (TVS) as part of the University of Kentucky Ovarian Cancer Screening Project. Two groups of women were eligible to participate in this investigation: (i) asymptomatic postmenopausal patients or patients >50 years of age, and (ii) asymptomatic women >30 years of age with a family history of ovarian

P. D. Depriest; H. H. Gallion; E. J. Pavlik; R. J. Kryscio; J. R. van Nagell

1997-01-01

108

The role of transvaginal ultrasound in the management of abnormal uterine bleeding  

Microsoft Academic Search

Abnormal uterine bleeding is a common symptom. Modern management should be based on a “one-stop” approach to which transvaginal ultrasound is ideally suited as a primary diagnostic tool. In premenopausal women focal pathology, such as fibroids and polyps, as well as extra uterine pathology, can be accurately diagnosed. In postmenopausal women endometrial cancer can be excluded. In the majority of

Emeka Okaro; George Condous; Tom Bourne

2004-01-01

109

Admixture of propofol and alfentanil. Use for intravenous sedation and analgesia during transvaginal oocyte retrieval.  

PubMed

An admixture of propofol and alfentanil provides adequate sedation and analgesia during transvaginal oocyte retrieval in the absence of a paracervical block. In 100 patients the technique provided haemodynamic stability, sedation which was easily controlled, rapid recovery and universal patient acceptance. PMID:1616081

Sherry, E

1992-06-01

110

Ultrasonography in diagnosing chronic pancreatitis: New aspects  

PubMed Central

The course and outcome is poor for most patients with pancreatic diseases. Advances in pancreatic imaging are important in the detection of pancreatic diseases at early stages. Ultrasonography as a diagnostic tool has made, virtually speaking a technical revolution in medical imaging in the new millennium. It has not only become the preferred method for first line imaging, but also, increasingly to clarify the interpretation of other imaging modalities to obtain efficient clinical decision. We review ultrasonography modalities, focusing on advanced pancreatic imaging and its potential to substantially improve diagnosis of pancreatic diseases at earlier stages. In the first section, we describe scanning techniques and examination protocols. Their consequences for image quality and the ability to obtain complete and detailed visualization of the pancreas are discussed. In the second section we outline ultrasonographic characteristics of pancreatic diseases with emphasis on chronic pancreatitis. Finally, new developments in ultrasonography of the pancreas such as contrast enhanced ultrasound and elastography are enlightened. PMID:24259955

Dimcevski, Georg; Erchinger, Friedemann G; Havre, Roald; Gilja, Odd Helge

2013-01-01

111

Sources of error in emergency ultrasonography  

PubMed Central

Background To evaluate the common sources of diagnostic errors in emergency ultrasonography. Methods The authors performed a Medline search using PubMed (National Library of Medicine, Bethesda, Maryland) for original research and review publications examining the common sources of errors in diagnosis with specific reference to emergency ultrasonography. The search design utilized different association of the following terms : (1) emergency ultrasonography, (2) error, (3) malpractice and (4) medical negligence. This review was restricted to human studies and to English-language literature. Four authors reviewed all the titles and subsequent the abstract of 171 articles that appeared appropriate. Other articles were recognized by reviewing the reference lists of significant papers. Finally, the full text of 48 selected articles was reviewed. Results Several studies indicate that the etiology of error in emergency ultrasonography is multi-factorial. Common sources of error in emergency ultrasonography are: lack of attention to the clinical history and examination, lack of communication with the patient, lack of knowledge of the technical equipment, use of inappropriate probes, inadequate optimization of the images, failure of perception, lack of knowledge of the possible differential diagnoses, over-estimation of one’s own skill, failure to suggest further ultrasound examinations or other imaging techniques. Conclusions To reduce errors in interpretation of ultrasonographic findings, the sonographer needs to be aware of the limitations of ultrasonography in the emergency setting, and the similarities in the appearances of various physiological and pathological processes. Adequate clinical informations are essential. Diagnostic errors should be considered not as signs of failure, but as learning opportunities. PMID:23902656

2013-01-01

112

A systematic review of the diagnostic role of ultrasonography in maxillofacial fractures.  

PubMed

This systematic review assessed the diagnostic value of ultrasonography in maxillofacial fractures. A computerized literature search of MEDLINE, PubMed and GoogleMed databases was conducted for publications on diagnostic ultrasound and maxillofacial fractures in English. Search phrases were 'maxillofacial fractures' or 'midfacial fractures' or 'zygomatic complex fractures' or 'nasal bone fractures' or 'orbital fractures' or 'mandibular fractures' combined with 'ultrasound' or 'ultrasonography'. The Boolean operator 'AND' was used to narrow the searches. 17 articles published between 1992 and 2009 were reviewed: two on midfacial fractures, nine on orbital fractures, three on nasal fractures, and two on mandibular fractures. One article described case series of ultrasonographic diagnosis of mandibular and midfacial fractures. The sensitivity and specificity of ultrasound in detecting orbital fractures were 56-100% and 85-100%, respectively, whilst that of nasal fractures were 90-100% and 98-100%, respectively. Sensitivity and specificity of ultrasonography in detecting zygomatic fractures were >90%. For mandibular fractures, the sensitivity and specificity was 66-100% and 52-100%, respectively. Much evidence justifies the use of diagnostic ultrasonography in maxillofacial fractures, especially fractures involving the nasal bone, orbital walls, anterior maxillary wall and zygomatic complex. The sensitivity and specificity of ultrasonography is generally comparable with CT. PMID:21377837

Adeyemo, W L; Akadiri, O A

2011-07-01

113

Imaging of tophaceous gout: computed tomography provides specific images compared with magnetic resonance imaging and ultrasonography  

Microsoft Academic Search

Objective: To determine the usefulness of computed tomography (CT), magnetic resonance imaging (MRI), and Doppler ultrasonography (US) in providing specific images of gouty tophi.Methods: Four male patients with chronic gout with tophi affecting the knee joints (three cases) or the olecranon processes of the elbows (one case) were assessed. Crystallographic analyses of the synovial fluid or tissue aspirates of the

J C Gerster; M Landry; L Dufresne; J Y Meuwly

2002-01-01

114

Arterial wall thickness measurements by B mode ultrasonography in patients with Takayasu's arteritis.  

PubMed Central

OBJECTIVE: To assess the feasibility and potential diagnostic usefulness of arterial ultrasonography in Takayasu's arteritis. METHODS: The total wall, intimal + medial, and adventitial thickness of the common carotid, subclavian and common femoral arteries, and of the abdominal aorta, were examined by B mode ultrasonography in 16 patients with Takayasu's arteritis and 16 healthy control subjects. RESULTS: The mean total wall and intimal + medial thickness of all arteries other than the common femoral were significantly increased in Takayasu's arteritis. Long segments of homogeneous circumferential wall thickening in multiple vessels were characteristic. When the common carotid and subclavian arteries and the abdominal aorta were examined, each individual with Takayasu's arteritis had at least one artery with total wall thickness exceeding the reference range in controls. CONCLUSIONS: B mode ultrasonography is able to expose the widespread arterial wall thickening characteristic of Takayasu's arteritis and may provide a useful tool for the detection and follow up of this disease. Images PMID:8774165

Raninen, R O; Kupari, M M; Pamilo, M S; Pajari, R I; Poutanen, V P; Hekali, P E

1996-01-01

115

Ultrasonography survey and thyroid cancer in the Fukushima Prefecture.  

PubMed

Thyroid cancer is one of the major health concerns after the accident in the Fukushima Dai-ichi nuclear power station (NPS). Currently, ultrasonography surveys are being performed for persons residing in the Fukushima Prefecture at the time of the accident with an age of up to 18 years. Here, the expected thyroid cancer prevalence in the Fukushima Prefecture is assessed based on an ultrasonography survey of Ukrainians, who were exposed at an age of up to 18 years to (131)I released during the Chernobyl NPS accident, and on differences in equipment and study protocol in the two surveys. Radiation risk of thyroid cancer incidence among survivors of the atomic bombings of Hiroshima and Nagasaki and preliminary estimates of thyroid dose due to the Fukushima accident were used for the prediction of baseline and radiation-related thyroid cancer risks. We estimate a prevalence of thyroid cancer of 0.027 % (95 % CI 0.010 %; 0.050 %) for the first screening campaign in the Fukushima Prefecture. Compared with the incidence rate in Japan in 2007, the ultrasonography survey is predicted to increase baseline thyroid cancer incidence by a factor of 7.4 (95 % CI 0.95; 17.3). Under the condition of continued screening, thyroid cancer during the first fifty years after the accident is predicted to be detected for about 2 % of the screened population. The prediction of radiation-related thyroid cancer in the most exposed fraction (a few ten thousand persons) of the screened population of the Fukushima Prefecture has a large uncertainty with the best estimates of the average risk of 0.1-0.3 %, depending on average dose. PMID:24398917

Jacob, Peter; Kaiser, Jan Christian; Ulanovsky, Alexander

2014-05-01

116

Occult uterine rupture: role of ultrasonography.  

PubMed Central

This article presents a case of occult spontaneous uterine rupture complicated by pelvic infection and peritonitis in the postpartum period. Ultrasonography played a primary role in the diagnosis of this complication and clearly demonstrated the uterine wall defect. This finding was confirmed later by computed tomography and by surgery. Images Figure 1 Figure 2 Figure 3 Figure 4 PMID:9640909

Cadet, J. J.

1998-01-01

117

[Ultrasonography of the adrenal gland in dogs].  

PubMed

The technic for the ultrasonographic evaluation of the canine adrenal glands is described and illustrated. When specific preconditions are met, it is feasible to image both adrenal glands. Indications for adrenal ultrasonography are discussed. The normal ultrasonographic appearance and ultrasonographic features of adrenal disease are described. PMID:7481716

Kaser-Hotz, B; Saunders, H M

1995-01-01

118

Vaginal mesh erosion after transvaginal repair of cystocele using Gynemesh or Gynemesh-Soft in 138 women: a comparative study  

Microsoft Academic Search

The objective of this study was to compare mesh erosion after transvaginal repair of cystocele using Gynemesh or Gynemesh-Soft\\u000a mesh. We retrospectively analyzed 138 consecutive cases of transvaginal repair of cystocele using synthetic mesh. The study\\u000a endpoint was the pathological evidence of vaginal erosion. Multiple logistic regression was used to determine independent\\u000a predictors of vaginal erosion. One hundred and thirty

X. Deffieux; R. de Tayrac; C. Huel; J. Bottero; A. Gervaise; K. Bonnet; R. Frydman; H. Fernandez

2007-01-01

119

Transvaginal ultrasound-guided embryo transfer improves outcome in patients with previous failed in vitro fertilization cycles  

Microsoft Academic Search

Objective: To determine the effect of transvaginal ultrasound-guided ET in IVF cycles performed on patients who had previously failed to conceive from IVF and compare the results to previous cycles where ultrasound guidance was not used.Design: Retrospective clinical study.Setting: Private practice IVF program.Patient(s): One hundred twenty-nine women undergoing consecutive cycles of IVF where fresh embryos were transferred.Intervention(s): Transvaginal ultrasound guidance

Robert E Anderson; Nancy L Nugent; Amanda T Gregg; Susan L Nunn; Barry R Behr

2002-01-01

120

Ultrasonography for neonatal brachial plexus palsy.  

PubMed

Ultrasonography has previously been reported for use in the evaluation of compressive or traumatic peripheral nerve pathology and for its utility in preoperative mapping. However, these studies were not performed in infants, and they were not focused on the brachial plexus. The authors report a case in which ultrasonography was used to improve operative management of neonatal brachial plexus palsy (NBPP). An infant boy was born at term, complicated by right-sided shoulder dystocia. Initial clinical evaluation revealed proximal arm weakness consistent with an upper trunk injury. Unlike MRI or CT myelography that focus on proximal nerve roots, ultrasonography of the brachial plexus in the supraclavicular fossa was able to demonstrate a small neuroma involving the upper trunk (C-5 and C-6) and no asymmetry in movement of the diaphragm or in the appearance of the rhomboid muscle when compared with the unaffected side. However, the supra- and infraspinatus muscles were significantly asymmetrical and atrophied on the affected side. Importantly, ultrasound examination of the shoulder revealed posterior glenohumeral laxity. Instead of pursuing the primary nerve reconstruction first, timely treatment of the shoulder subluxation prevented formation of joint dysplasia and formation of a false glenoid, which is a common sequela of this condition. Because the muscles innervated by proximal branches of the cervical nerve roots/trunks were radiographically normal, subsequent nerve transfers were performed and good functional results were achieved. The authors believe this to be the first report describing the utility of ultrasonography in the surgical treatment planning in a case of NBPP. Noninvasive imaging, in addition to thorough history and physical examination, reduces the intraoperative time required to determine the extent and severity of nerve injury by allowing improved preoperative planning of the surgical strategy. Inclusion of ultrasonography as a preoperative modality may yield improved outcomes for children with NBPP. PMID:25216291

Joseph, Jacob Rahul; DiPietro, Michael A; Somashekar, Deepak; Parmar, Hemant A; Yang, Lynda J S

2014-11-01

121

Initial experience with laparoscopic-assisted transvaginal cholecystectomy: a hybrid approach to natural orifice surgery.  

PubMed

Minimally invasive surgery is designed to provide a friendlier surgical therapy, in terms of faster recovery times, improved cosmetic results, and reduced postoperative pain. In recent years, a new genre for exploring the abdominal cavity without incisions has been developed. Incisionless surgery is considered the next frontier in minimally invasive surgery. The idea is to use natural orifices as the entry point to the abdomen, by using an endoscope through a transgastric, transvaginal, transvesical, or transcolonic access; hence, it is called as natural orifice transluminal endoscopic surgery (NOTES). We report our first case of laparoscopic-assisted transvaginal cholecystectomy. We support that NOTES can provide benefits in terms of reduced pain, faster recovery, and better cosmetic results compared with conventional laparoscopic surgery. PMID:20187522

Rudiman, Reno; Wiradisuria, Errawan

2009-01-01

122

Development of a chute to facilitate transvaginal ultrasound guided oocyte aspiration (TUGA) in the sow.  

PubMed

A procedure developed for nonsurgical transvaginal ultrasound-guided oocyte aspiration in the mature sow was dependent upon development of a special chute. This chute was designed to immobilize and protect the sow. The floor of the chute possessed a metal bar that was elevated via a hydraulic lift until the weight of the sow rested on the bar, while her hooves were still in contact with the floor. This exact positioning of the female prevented her from resisting procedure and allowed for a comfortable setting for technician to manipulate the ovaries (per rectum) and perform transvaginal ultrasound guided oocyte aspiration (TUGA). Oocyte collection was performed in six sows, and none experienced detrimental health effects from the procedure. PMID:22986298

Ferguson, Edward; Bellows, Shane; Lemieux, Frederick; Godke, Robert

2013-02-01

123

Birth of Siberian tiger (Panthera tigris altaica) cubs after transvaginal artificial insemination.  

PubMed

A captive 9-yr-old female Siberian tiger (Panthera tigris altaica) at the Lisbon Zoo was treated with equine chorionic gonadotropin followed 80 hr later by human chorionic gonadotropin to stimulate follicular development and ovulation, respectively. Forty-one hours after the second hormone administration, the tiger was subjected to transvaginal artificial insemination with diluted fresh semen containing 500 x 10(6) motile spermatozoa obtained from an 8-yr-old male Siberian tiger via electroejaculation. After anesthesia, the female tiger was placed in an inclined position with the hind limbs elevated during and after the insemination and was maintained in this position for 15 min to minimize semen reflux. An anesthetic reversal agent was then administered. After a 103-day gestation, the female gave birth to three apparently healthy cubs that survived 24-48 hr. These results demonstrate that transvaginal artificial insemination can be successfully performed in the Siberian tiger to produce full-term offspring. PMID:11428407

Chagas e Silva, J N; Leitão, R M; Lapão, N E; da Cunha, M B; da Cunha, T P; da Silva, J P; Paisana, F C

2000-12-01

124

Transvaginal Liver Surgery Using a Tethered Magnet and a Laparoscopic Rein  

PubMed Central

Introduction: A novel technique was used to remove a large liver cyst via culdolaparoscopy. Case Description: We used laparoscopic instruments, a gastroscope, a laparoscopic rein, and magnets. The magnets consist of an external magnet and a specially modified tethered neodymium internal magnet, safe for use in transvaginal endoscopic surgery. Discussion: These technologies offer some advantages when they are used together: magnets and the rein to aid in exposure, traction–retraction, and triangulation. Previous reports have been published on the removal of benign liver lesions transvaginally, but none to date has involved the use of magnets. This article reports on the role of magnets and reins in an incision reduction approach to the removal of a liver cyst. PMID:23743386

Dominguez, Guillermo; Davila, Fausto; Alonso-Rivera, Juan Manuel; Safro, Brad; Tinelli, Andrea

2013-01-01

125

Totally NOTES (T-NOTES) transvaginal cholecystectomy using two endoscopes: preliminary report  

Microsoft Academic Search

Background  Clinical applications of transvaginal Natural Orifice Transluminal Endoscopic Surgery (NOTES) are still limited in the literature,\\u000a mostly case reports performed by hybrid procedures with laparoscopic assistance. Avoiding complications from incisions is\\u000a the main goal for natural orifice surgery. This study reports on a technique developed at our institution that uses two endoscopes\\u000a inserted into the vagina to perform a Totally

Luiz Henrique de Sousa; José Américo Gomides de Sousa; Luiz Henrique de Sousa Filho; Murilo Miranda de Sousa; Vitor Miranda de Sousa; Ana Patricia Miranda de Sousa; Ricardo Zorron

2009-01-01

126

Operative transvaginal hydrolaparoscopy for treatment of polycystic ovary syndrome: a new minimally invasive surgery  

Microsoft Academic Search

Objective: To evaluate a new minimally invasive surgery for treatment of the polycystic ovary syndrome (PCOS) in clomiphene-resistant infertile women.Design: Prospective study.Setting: University teaching hospital.Patient(s): Thirteen clomiphene citrate–resistant anovulatory women with PCOS.Intervention(s): Operative transvaginal hydrolaparoscopy (THL) using a coaxial bipolar electrode.Main Outcome Measure(s): Feasability, ovulation rate, and pregnancy rate.Result(s): Ovarian drilling was performed by THL in all patients; no surgical

Hervé Fernandez; Jean-Dominique Alby; Amélie Gervaise; Renaud de Tayrac; René Frydman

2001-01-01

127

Recent Advances in Endoscopic Papillectomy for Ampulla of Vater Tumors: Endoscopic Ultrasonography, Intraductal Ultrasonography, and Pancreatic Stent Placement  

PubMed Central

Since it was first described nearly three decades ago, endoscopic papillectomy (EP) has been utilized as a less invasive, alternative therapy for adenoma of the major duodenal papilla. In this article, we review the recent advances in EP, especially those pertaining to endoscopic ultrasonography (EUS), intraductal ultrasonography (IDUS), and pancreatic stent placement for the prevention of postpapillectomy pancreatitis. Because EUS and IDUS have similar diagnostic accuracies, either modality can be used for the preprocedural evaluation of ampullary tumors. Nevertheless, further technical refinements are required for a more precise evaluation. Given the paucity of data on the usefulness of EUS and/or IDUS during follow-up after EP, a well-designed study is warranted. Furthermore, pancreatic stent placement appears to have a protective effect against postpapillectomy pancreatitis; however, a prospective, randomized, controlled study with a larger number of patients is needed to assess this finding. Moreover, since pancreatic stent placement after EP is not always successful, various novel techniques have been developed to ensure reliable stent placement. Despite the recent advances in EP, further technical refinements and studies are needed to confirm their efficacy.

Han, Jimin; Lee, Dong Wook

2015-01-01

128

Transvaginal Laparoscopic Appendectomy Simultaneously with Vaginal Hysterectomy: Initial Experience of 10 Cases  

PubMed Central

Background Natural orifice transluminal endoscopic surgery (NOTES) involves the introduction of instruments through a natural orifice into the peritoneal cavity to perform surgical interventions. The vagina is the most widely used approach to NOTES. We report the utilization of the vaginal opening at the time of vaginal hysterectomy as a natural orifice for laparoscopic appendectomy. Material/Methods We reviewed cases of 10 patients with chronic appendicitis who underwent transvaginal laparoscopic appendectomy simultaneously with vaginal hysterectomy. A laparoscopic approach was established after removal of the uterus, and the appendix was removed transvaginally. Among the 10 cases, 5 were conducted under gasless laparoscopy by using a simple abdominal wall-lifting instrument. Results All procedures were performed successfully without intraoperative or major postoperative complications. The appendectomy portion of the procedure took approximately 21 minutes to 34 minutes. All patients were discharged less than 4 days after surgery, without external scars. Conclusions Transvaginal appendectomy with rigid laparoscopic instruments following vaginal hysterectomy appears to be a feasible and safe modification of established techniques, with acceptable outcomes. PMID:25300522

Tian, Yu; Wu, Shuo-Dong; Chen, Ying-Han; Wang, Dan-Bo

2014-01-01

129

Twin pregnancy experimental model for transvaginal ultrasound-guided twin reduction in mares.  

PubMed

Multiple pregnancies are still an important cause of noninfectious abortion, stillbirth, neonatal mortality, and significant delays in reproductive performance in mares. Despite new management techniques, reduction in multiple pregnancies is an ongoing preoccupation and challenge for the equine veterinarian. The aim of the present study was to establish a twin pregnancy experimental model in the mare to study the effectiveness of a transvaginal ultrasound-guided embryonic vesicle injection. Mares in heat were inseminated and then received an embryo at day 7 of the estrous cycle. At days 14 and 30, 53.5% (n = 23) and 23% (n = 10) of the mares, respectively, were carrying twins. Twin pregnancies were reduced at day 30 by transvaginal ultrasound-guided puncture of the embryonic vesicle (control, n = 5) or by transvaginal ultrasound-guided injection (TVUEVI) of 25 mg of amikacin into the embryonic vesicle (n = 5). The TVUEVI treatment had a 40% success rate and no significant variations in progesterone and prostaglandin metabolite were observed. Even though the technique does not seem very effective, the experimental model could be useful for clinical research in embryo reduction and early embryonic loss. PMID:19183731

Raggio, Ignacio; Lefebvre, Réjean C; Poitras, Pierre; Vaillancourt, Denis; Goff, Alan K

2008-11-01

130

Surgical repair of rectocele. Comparison of transvaginal and transanal approach and personal technique  

PubMed Central

Summary Rectocele is defined as a herniation of the rectal wall inside the vagina due to a defect of the recto-vaginal septum. It is traditionally considered a posterior compartment damage with weakness of posterior vaginal wall support resulting in a bulging of the rectum into the vaginal cavity. One of the main causes of rectal prolapse is the operative vaginal birth, although the evidence of the defect may occur after many years The treatment of rectocele is surgical, and the approach can be transperineal, transvaginal, and transanal or, in selected cases, transperitoneal through open or laparoscopic techniques. In this study we compare two transvaginal surgical techniques - i.e. the perineal body anchorage to the posterior septum and the traditional Denonvilliers’ transversal suture after removing of the vaginal skin, with the mostly performed transanal procedure, the STARR - comparing the data from the literature on their results. Mean hospital stay, rectal symptoms, dyspareunia, quality of life, recurrence rate and postoperative complications have been considered. Both transvaginal and transrectal surgical techniques are effective to solve posterior compartment defect and to improve the quality of life. Vaginal approach may interfere with the sexual activity; furthermore it is associated with minimal postoperative pain than the transanal approach. Better anatomic results are assured after endovaginal surgery, while better rectal function prevail after the transanal approach. Vaginal techniques are more suitable to gynecologists, whereas the transrectal ones are usually performed by colo-proctologists or general surgeons. PMID:24342163

LEANZA, V.; INTAGLIATA, E.; LEANZA, G.; CANNIZZARO, M.A.; ZANGHÌ, G.; VECCHIO, R.

2013-01-01

131

Surgical repair of rectocele. Comparison of transvaginal and transanal approach and personal technique.  

PubMed

Rectocele is defined as a herniation of the rectal wall inside the vagina due to a defect of the recto-vaginal septum. It is traditionally considered a posterior compartment damage with weakness of posterior vaginal wall support resulting in a bulging of the rectum into the vaginal cavity. One of the main causes of rectal prolapse is the operative vaginal birth, although the evidence of the defect may occur after many years The treatment of rectocele is surgical, and the approach can be transperineal, transvaginal, and transanal or, in selected cases, transperitoneal through open or laparoscopic techniques. In this study we compare two transvaginal surgical techniques - i.e. the perineal body anchorage to the posterior septum and the traditional Denonvilliers' transversal suture after removing of the vaginal skin, with the mostly performed transanal procedure, the STARR - comparing the data from the literature on their results. Mean hospital stay, rectal symptoms, dyspareunia, quality of life, recurrence rate and postoperative complications have been considered. Both transvaginal and transrectal surgical techniques are effective to solve posterior compartment defect and to improve the quality of life. Vaginal approach may interfere with the sexual activity; furthermore it is associated with minimal postoperative pain than the transanal approach. Better anatomic results are assured after endovaginal surgery, while better rectal function prevail after the transanal approach. Vaginal techniques are more suitable to gynecologists, whereas the transrectal ones are usually performed by colo-proctologists or general surgeons. PMID:24342163

Leanza, V; Intagliata, E; Leanza, G; Cannizzaro, M A; Zanghì, G; Vecchio, R

2013-01-01

132

Endoscopic Color Doppler Ultrasonography for Esophagogastric Varices  

PubMed Central

Esophagogastric varices are considered to be the most common complication in patients with portal hypertension. Endoscopic ultrasonography not only visualizes the surface of the varices but also provides detailed information about their internal structure. The direction of blood flow can be determined and its velocity measured only via endoscopic color Doppler ultrasonography (ECDUS). This can show graphically esophageal varices, paraesophageal veins, and passageways in esophageal variceal patients and gastric varices, perigastric collateral veins in gastric variceal patients. It is important to evaluate the hemodynamics of the portal venous system when treating the esophago-gastric varices. ECDUS is a useful modality for the evaluation of the detailed hemodynamics and the therapeutic effects of esophago-gastric varices. PMID:23213271

Sato, Takahiro; Yamazaki, Katsu

2012-01-01

133

Adherence to Criteria for Transvaginal Ultrasound Imaging and Measurement of Cervical Length  

PubMed Central

Background Adherence to published criteria for transvaginal imaging and measurement of cervical length is uncertain. We sought to assess adherence by evaluating images submitted to certify research sonographers for participation in a clinical trial. Study Design We reviewed qualifying test results of sonographers seeking certification to image and measure cervical length in a clinical trial. Participating sonographers were required to access training materials and submit 15 images, three each from five pregnant women not enrolled in the trial. One of two sonologists reviewed all qualifying images. We recorded the proportion of images that did not meet standard criteria (excess compression, landmarks not seen, improper image size, or full maternal bladder) and the proportion in which the cervical length was measured incorrectly. Failure for a given patient was defined as more than one unacceptable image, or more than two acceptable images with incorrect caliper placement or erroneous choice of the “shortest best” cervical length. Certification required satisfactory images and cervical length measurement from four or more patients. Results 327 sonographers submitted 4905 images. 271 sonographers (83%) were certified on the first, 41 (13%) on the second, and 2 (0.6%) on the third submission. 13 never achieved certification. Of 314 who passed, 196 submitted 15 acceptable images that were appropriately measured for all five women. There were 1277 deficient images: 493 were acceptable but incorrectly measured images from sonographers who passed certification because mis-measurement occurred no more than twice. Of 784 deficient images submitted by sonographers who failed the certification, 471 were rejected because of improper measurement (caliper placement and/or failure to identify the shortest best image), and 313 because of failure to obtain a satisfactory image (excessive compression, required landmarks not visible, incorrect image size, brief examination, and/or full maternal bladder) Conclusion Although 83% of sonographers were certified on their first submission, more than one in four ultrasound images submitted did not meet published quality criteria. Increased attention to standardized education and credentials is warranted for persons who perform ultrasound examinations of the cervix in pregnancy. PMID:23958649

Iams, JD; Grobman, WA; Lozitska, A; Spong, CY; Saade, G; Mercer, BM; Tita, AN; Rouse, DJ; Sorokin, Y; Wapner, RJ; Leveno, KJ; Esplin, MS; Tolosa, JE; Thorp, JM; Caritis, SN; Van Dorsten, JP

2014-01-01

134

Fast and accurate ultrasonography for visceral fat measurement.  

PubMed

Visceral fat area (VFA) has close relationship with hypertension, diabetes and cardiovascular disease, and therefore serve as a reliable indicator of these diseases. Abdominal computed tomography (CT) enables precise quantification of the VFA and has been considered as the gold standard for VFA assessment. In this paper, we develope a novel method to quickly and accurately measure the VFA with ultrasonography (US). We evaluated the novel method on five volunteers and the diagnosis procedures lasted less than 30 seconds averagely. The simulation results by our method were compared with VFA estimated by abdominal CT. The correlation coefficient between them was 0.913 for men and 0.858 for women. And the mean deviation of between VFA by CT and by our method was 19.8 cm2 for men and 13.3 cm2 for women. PMID:20879298

Zhou, You; Koizumi, Norihiro; Kubota, Naoto; Asano, Takaharu; Yuhashi, Kazuhito; Mochizuki, Takashi; Kadowaki, Takashi; Sakuma, Ichiro; Liao, Hongen

2010-01-01

135

Adrenalectomy using natural orifice translumenal endoscopic surgery (NOTES): A transvaginal retroperitoneal approach  

Microsoft Academic Search

Background  Endoscopic adrenalectomy currently is performed using either a retroperitoneal or transperitoneal approach. The retroperitoneal\\u000a approach is ideal for patients with small lesions who have undergone previous intraabdominal surgery. This study aimed to\\u000a explore transvaginal retroperitoneal right and left adrenalectomies in porcine and cadaver models.\\u000a \\u000a \\u000a \\u000a Methods  Right and left adrenalectomies were performed for two female pigs. With the pig supine under general

Silvana Perretta; Pierre Allemann; Mitsuhiro Asakuma; Bernard Dallemagne; Jacques Marescaux

2009-01-01

136

Implications of the FDA statement on transvaginal placement of mesh: the aftermath.  

PubMed

The release of the U.S. Food and Drug Administration (FDA) safety communication on the use of transvaginal mesh (TVM) for pelvic organ prolapse (POP) has resulted in changes in the pelvic reconstruction community. This monograph reviews the implications of the FDA statements over the last 18-24 months. Recent findings show that there have been significant developments in the areas of regulatory mandates, media and medico-legal activity, and statements from surgical societies. In summary, well-publicized communications from the FDA and major medical organizations are defining a change in the use of TVM for POP. PMID:24384996

Koski, Michelle E; Rovner, Eric S

2014-02-01

137

Role of conventional ultrasonography and color flow-doppler sonography in predicting malignancy in 'cold' thyroid nodules  

Microsoft Academic Search

The aim of the present study was to establish the usefulness of conventional thyroid ultrasonography (US) and color flow-doppler (CFD) sonography in the assessment of 'cold' thyroid nodules. One hundred and four consecutive patients with thyroid nodules who were to undergo surgery were examined by US and CFD before thyroidectomy. Conventional US evaluated the presence of a halo sign, hypoechogenicity

T Rago; P Vitti; L Chiovato; S Mazzeo; A De Liperi; P Miccoli; P Viacava; F Bogazzi; E Martino; A Pinchera

1998-01-01

138

Value of duplex and color doppler ultrasonography in the evaluation of orbital vascular flow and resistance in sickle cell disease  

Microsoft Academic Search

The aim of the present study was to assess and to compare the orbital and retinal vascular flow dynamics and resistance in patients with homozygous sickle cell disease with controls by means of duplex and color Doppler ultrasonography. Forty-six patients with homozygous sickle cell disease (SCD) and 20 healthy subjects were included in the study. None of the patients had

Kairgeldy Aikimbaev; Birol Guvenc; Abdullah Canataroglu; Hatice Canataroglu; Fikri Baslamisli; Mahmut Oguz

2001-01-01

139

Visceral fat thickness measured by ultrasonography can estimate not only visceral obesity but also risks of cardiovascular and  

Microsoft Academic Search

Background: Visceral obesity is closely associated with cardiovas- cular disease and the metabolic syndrome. Estimating the amount of visceral fat is important and requires a straightforward, reliable, and practical method. Objective: We investigated whether visceral fat thickness (VFT) measured by ultrasonography can adequately assess visceral fat ac- cumulation and predict cardiovascular or metabolic diseases. Design: Diabetic patients (240 men and

Soo Kyung Kim; Hae Jin Kim; Kyu Yeon Hur; Sung Hee Choi; Chul Woo Ahn; Sung Kil Lim; Kyung Rae Kim; Hyun Chul Lee; Kap Bum Huh; Bong Soo Cha

140

Mesh Exposure and Associated Risk Factors in Women Undergoing Transvaginal Prolapse Repair with Mesh  

PubMed Central

Objective. To determine frequency, rate, and risk factors associated with mesh exposure in women undergoing transvaginal prolapse repair with polypropylene mesh. Methods. Retrospective chart review was performed for all women who underwent Prolift Pelvic Floor Repair System (Gynecare, Somerville, NJ) between September 2005 and September 2008. Multivariable logistic regression was performed to identify risk factors for mesh exposure. Results. 201 women underwent Prolift. Mesh exposure occurred in 12% (24/201). Median time to mesh exposure was 62 days (range: 10–372). When mesh was placed in the anterior compartment, the frequency of mesh exposure was higher than that when mesh was placed in the posterior compartment (8.7% versus 2.9%, P = 0.04). Independent risk factors for mesh exposure were diabetes (AOR?=?7.7, 95% CI 1.6–37.6; P = 0.01) and surgeon (AOR?=?7.3, 95% CI 1.9–28.6; P = 0.004). Conclusion. Women with diabetes have a 7-fold increased risk for mesh exposure after transvaginal prolapse repair using Prolift. The variable rate of mesh exposure amongst surgeons may be related to technique. The anterior vaginal wall may be at higher risk of mesh exposure as compared to the posterior vaginal wall. PMID:24194763

Frankman, Elizabeth A.; Alperin, Marianna; Sutkin, Gary; Meyn, Leslie; Zyczynski, Halina M.

2013-01-01

141

Ultrasonography in the Diagnosis of Gallbladder Disease  

PubMed Central

Ultrasonography is the technique of choice in diagnosing gallbladder calculi. In the mid-1970s ultrasound was only accurate enough to use as an adjunct to oral cholecystography but refinements such as gray scale and real-time imaging mean that in experienced hands it has a sensitivity of 96% and a specificity of 93%. Sonography is also the test of choice in the initial evaluation of jaundiced patients. It is an excellent technique for distinguishing between obstructive and nonobstructive jaundice, although it is less accurate in demonstrating the cause of the obstruction. Ultrasound is painless and relatively inexpensive, and has several advantages over oral cholecystography; it doesn't depend on contrast material, causes no adverse reactions or side-effects, is safe during pregnancy, does not expose the patient to radiation, and is less time-consuming. ImagesFig. 2Fig. 3Fig. 4Fig. 5Fig. 6Fig. 7Fig. 8 PMID:21283395

Birtwhistle, Richard V.; Sauerbrei, Eric E.

1983-01-01

142

Fatty meal ultrasonography in chronic acalculous cholecystitis  

PubMed Central

Chronic acalculous cholecystits typically presents with biliary symptoms, normal blood tests and unremarkable ultrasound, computerized tomography and magnetic resonance cholangiopancreatography. However, cholescintigraphy may show reduced gallbladder ejection fraction (GBEF). There are no reports on using ultrasound to measure GBEF in adults. Twenty-eight patients with the above presentation underwent ultrasound before and after ingestion of a standardized fatty meal. Consequently, GBEF was calculated. Seven patients had reduced GBEFs (<38%). Two of these patients underwent cholecystectomy and both were found to have chronic gallbladder inflammation. Three patients with normal GBEFs underwent cholecystectomy and were also found to have chronic gallbladder inflammation. There may be a role for fatty meal ultrasonography in the diagnosis of chronic acalculous cholecystitis, but it should be used more widely in this patient cohort for its role to be established. It ideally needs to performed alongside cholescintigraphy for the comparison of accuracy. PMID:25409675

Donen, Anna; Kantor, Robin

2014-01-01

143

Risk factors for mesh erosion after transvaginal surgery using polypropylene (Atrium) or composite polypropylene\\/polyglactin 910 (Vypro II) mesh  

Microsoft Academic Search

The objective of this study was to identify the risk factors associated with the occurrence of mesh erosion (ME) during the first 6 post-operative months in patients having undergone transvaginal repair of pelvic organ prolapse (POP) with Atrium or Vypro II mesh. We retrospectively reviewed the records of 198 consecutive patients who underwent vaginal reconstructive surgery reinforced either by Atrium

Chahin Achtari; Richard Hiscock; Barry A. O’Reilly; Lore Schierlitz; Peter L. Dwyer

2005-01-01

144

A new technique for cystocele repair and transvaginal sling: the cadaveric prolapse repair and sling ( CaPS)  

Microsoft Academic Search

A new technique using cadaveric fascia lata for the simultaneous repair of a cystocele and placement of a pubovaginal sling by means of a transvaginal approach is described, and our early results are reported. We refer to this as the cadaveric prolapse repair with sling (CaPS). Fifty patients, ages 37 to 90 years, underwent a new technique for simultaneous cystocele

Kathleen C Kobashi; Sharron L Mee; Gary E Leach

2000-01-01

145

Comparison of CA 125 assays with abdominopelvic computed tomography and transvaginal ultrasound in monitoring of ovarian cancer  

Microsoft Academic Search

Objective: To compare serum CA 125 assays with computed tomography (CT) and transvaginal ultrasound (TVUS) for early detection of disease recurrence in patients with ovarian cancer. Methods: Sixty-two patients with nonmucinous epithelial ovarian cancer who had positive CA 125 levels (> 35 U\\/ml) were studied. We performed a retrospective review to determine the usefulness of serum CA 125 measurements. Setting

T. Sugiyama; T. Nishida; K. Komai; H. Nishimura; M. Yakushiji

1996-01-01

146

Accuracy of three-dimensional transvaginal ultrasound in uterus volume measurements; comparison with two-dimensional ultrasound  

Microsoft Academic Search

The purpose of this study was to document the accuracy of 3-D uterus volume and to compare it with 2-D measurements. Transvaginal ultrasound (US) examinations were performed in 48 consecutive patients before hysterectomy. The examinations were stored digitally on an internal disk drive for subsequent measurements in virtual organ computer-aided analysis (VOCAL) program. Immediately after the hysterectomy, the true volume

Cemil Yaman; Klaus Jesacher; Werner Pölz

2003-01-01

147

Diagnostic value of single complete compression ultrasonography in pregnant and postpartum women with suspected deep vein thrombosis: prospective study  

PubMed Central

Objective To assess the safety of using single complete compression ultrasonography in pregnant and postpartum women to rule out deep vein thrombosis. Design Prospective outcome study. Setting Two tertiary care centres and 18 private practices specialising in vascular medicine in France and Switzerland. Participants 226 pregnant and postpartum women referred for suspected deep vein thrombosis. Methods A single proximal and distal compression ultrasonography was performed. All women with a negative complete compression ultrasonography result did not receive anticoagulant therapy and were followed up for a three month period. Main outcome measures Symptoms of venous thromboembolism, second compression ultrasonography or chest imaging, a thromboembolic event, and anticoagulant treatment. Results 16 women were excluded, mainly because of associated suspected pulmonary embolism. Deep vein thrombosis was diagnosed in 22 out of the 210 included women (10.5%). 10 patients received full dose anticoagulation despite a negative test result during follow-up. Of the 177 patients without deep vein thrombosis and who did not receive full dose anticoagulant therapy, two (1.1%, 95% confidence interval 0.3% to 4.0%) had an objectively confirmed deep vein thrombosis during follow-up. Conclusions The rate of venous thromboembolic events after single complete compression ultrasonography in pregnant and postpartum women seems to be within the range of that observed in studies in the non-pregnant population. These data suggest that a negative single complete compression ultrasonography result may safely exclude the diagnosis of deep vein thrombosis in this setting. Trial registration clinicaltrials.gov NCT00740454. PMID:22531869

2012-01-01

148

Role of echo Doppler ultrasonography in the evaluation of postprandial hyperemia in cirrhotic patients  

PubMed Central

AIM: To assess the role of echo-Doppler ultrasonography in postprandial hyperemia in cirrhotic patients by comparing the results with the hepatic vein catheterization technique. METHODS: Patients with cirrhosis, admitted to the portal hemodynamic laboratory were included into the study. After an overnight fast, echo-Doppler ultrasonography (basal and 30 min after a standard meal) and hemodynamic studies by hepatic vein catheterization (basal, 15 min and 30 min after a standard meal) were performed. Ensure Plus (Abbot Laboratories, North Chicago, IL) was used as the standard liquid meal. Correlation analysis of the echo-Doppler and hepatic vein catheterization measurements were done for the basal and postprandial periods. RESULTS: Eleven patients with cirrhosis (5 Child A, 4 Child B, 2 Child C) were enrolled into the study. After the standard meal, 8 of the 11 patients showed postprandial hyperemia with increase in portal blood flow, portal blood velocity and hepatic venous pressure gradient. Hepatic venous pressure gradient in the postprandial period correlated positively with postprandial portal blood velocity (r = 0.8, P < 0.05) and correlated inversely with postprandial superior mesenteric artery pulsatility index (r = -1, P < 0.01). CONCLUSION: Postprandial hyperemia can be efficiently measured by echo-Doppler ultrasonography and the results are comparable to those obtained with the hemodynamic studies. PMID:18186565

Ozdogan, Osman; Atalay, Huseyin; Cimsit, Cagatay; Tahan, Veysel; Tokay, Sena; Giral, Adnan; Imeryuz, Nese; Baltacioglu, Feyyaz; Tuney, Davut; Erzen, Canan; Tozun, Nurdan

2008-01-01

149

Co-registered spectral photoacoustic tomography and ultrasonography of breast cancer  

NASA Astrophysics Data System (ADS)

Many breast cancer patients receive neoadjuvant treatment to reduce tumor size and enable breast conserving therapy. Most imaging methods used to monitor response to neoadjuvant chemotherapy or hormone therapy depend on overall gross tumor morphology and size measurements, which may not be sensitive or specific, despite tumor response on a cellular level. A more sensitive and specific method of detecting response to therapy might allow earlier adjustments in treatment, and thus result in better outcomes while avoiding unnecessary morbidity. We developed an imaging system that combines spectral photoacoustic tomography and ultrasonography to predict breast neoadjuvant therapeutic response based on blood volume and blood oxygenation contrast. The system consists of a tunable dye laser pumped by a Nd:YAG laser, a commercial ultrasound imaging system (Philips iU22), and a multichannel data acquisition system which displays co-registered photoacoustic and ultrasound images in real time. Early studies demonstrate functional imaging capabilities, such as oxygen saturation and total concentration of hemoglobin, in addition to ultrasonography of tumor morphology. Further study is needed to determine if the co-registered photoacoustic tomography and ultrasonography system may provide an accurate tool to assess treatment efficacy by monitoring tumor response in vivo.

Ke, Haixin; Erpelding, Todd N.; Garcia-Uribe, Alejandro; Jacobs, Eileen; Holley, Susan; Monsees, Barbara; Wang, Lihong V.

2014-03-01

150

Imaging renal cell carcinoma with ultrasonography, CT and MRI  

Microsoft Academic Search

The increased use of abdominal imaging techniques for a variety of indications has contributed to more-frequent detection of renal cell carcinoma (RCC). Ultrasonography has been used to characterize the solid versus cystic nature of renal masses. This modality has limitations, however, in further characterization of solid tumors and in staging of malignancy, although contrast-enhanced ultrasonography has shown promise. Cross-sectional imaging

Michael J. Leveridge; Peter J. Bostrom; George Koulouris; Antonio Finelli; Nathan Lawrentschuk

2010-01-01

151

Localization of an occult insulinoma by intraoperative ultrasonography.  

PubMed

Intraoperative ultrasonography has not been used previously to locate an insulinoma that was not surgically palpable or that could not be seen by selective arteriography. In this report we described a patient with an insulinoma localized to the pancreatic head identified by transhepatic portal venous sampling but not by selective arteriography or palpation. At operation intraoperative ultrasonography demonstrated an 8 mm tumor in the pancreatic head and guided the successful enucleation. PMID:2983451

Norton, J A; Sigel, B; Baker, A R; Ettinghausen, S E; Shawker, T H; Krudy, A G; Doppman, J L; Taylor, S I; Gordon, P

1985-03-01

152

Transvaginal ultrasound  

MedlinePLUS

... ovary, ultrasound imaging of pelvic structures. In: Lentz GM, Lobo RA, Gershenson DM, Katz VL, eds. Comprehensive ... cell neoplasms, sex-cord stromal tumors. In: Lentz GM, Lobo RA, Gershenson DM, Katz VL, eds. Comprehensive ...

153

Receiver operating characteristic curves of transvaginal Doppler blood flow measurements in benign and malignant adnexal tumors.  

PubMed

The role of receiver operating characteristic curves of transvaginal Doppler velocimetry in predicting malignancy was evaluated in 80 patients with benign and 40 patients with malignant adnexal tumors. The mean values of peak systolic velocity did not differ significantly. Malignant tumors had a significantly higher end diastolic velocity and mean flow velocity than benign tumors. Benign tumors had a significantly higher ratio of peak systolic to end diastolic velocity, pulsatility index, and resistive index than malignant tumors. The diagnostic accuracies in predicting malignancy were as follows: peak systolic velocity, 62%; end diastolic velocity, 79%; ratio of peak systolic to end diastolic velocity, 63%; mean flow velocity, 73%; pulsatility index, 91%; resistive index, RI 92%. Doppler velocimetry analysis allows us to predict the presence of malignancy with limited reliability. PMID:9771608

Takac, I

1998-10-01

154

High-throughput fiber-array transvaginal ultrasound/photoacoustic probe for ovarian cancer imaging  

NASA Astrophysics Data System (ADS)

A high-throughput ultrasound/photoacoustic probe for delivering high contrast and signal-to-noise ratio images was designed, constructed, and tested. The probe consists of a transvaginal ultrasound array integrated with four 1mm-core optical fibers and a sheath. The sheath encases transducer and is lined with highly reflecting aluminum for high intensity light output and uniformity while at the same time remaining below the maximum permissible exposure (MPE) recommended by the American National Standards Institute (ANSI). The probe design was optimized by simulating the light fluence distribution in Zemax. The performance of the probe was evaluated by experimental measurements of the fluence and real-time imaging of polyethylene-tubing filled with blood. These results suggest that our probe has great potential for in vivo imaging and characterization of ovarian cancer.

Salehi, Hassan S.; Kumavor, Patrick D.; Alqasemi, Umar; Li, Hai; Wang, Tianheng; Zhu, Quing

2014-03-01

155

Intraoperative microvascular Doppler ultrasonography in cerebral aneurysm surgery  

PubMed Central

OBJECTIVES—Outcome of surgical treatment of cerebral aneurysms may be severely compromised by local cerebral ischaemia or infarction resulting from the inadvertent occlusion of an adjacent vessel by the aneurysm clip, or by incomplete aneurysm closure. It is therefore mandatory to optimise clip placement in situ to reduce the complication rate. The present study was performed to investigate the reliability of intraoperative microvascular Doppler ultrasonography (MDU) in cerebral aneurysm surgery, and to assess the impact of this method on the surgical procedure itself.?METHODS—Seventy five patients (19 men, 56 women, mean age 54.8 years, range 22-84 years) with 90 saccular cerebral aneurysms were evaluated. Blood flow velocities in the aneurysmal sac and in the adjacent vessels were determined by MDU before and after aneurysm clipping. The findings of MDU were analysed and compared with those of visual inspection of the surgical site and of postoperative angiography. Analysis was also made of the cases in which the clip was repositioned due to MDU findings.?RESULTS—A relevant stenosis of an adjacent vessel induced by clip positioning that had escaped detection by visual inspection was identified by Doppler ultrasonography in 17 out of 90 (18.9%) aneurysms. In addition, Doppler ultrasound demonstrated a primarily unoccluded aneurysm in 11 out of 90 (12.2%) patients. The aneurysm clip was repositioned on the basis of the MDU findings in 26 out of 90 (28.8%) cases. In middle cerebral artery (MCA) aneurysms, the MDU results were relevant to the surgical procedure in 17out of 44 (38.6%) cases. Whereas with aneurysms of the anterior cerebral artery significant findings occurred in only five of 32cases (15.6%; p<0.05). The clip was repositioned on the basis of the MDU results in 18 out of 50 (36%) aneurysms in patients with subarachnoid haemorrhage (SAH) grade I-V compared with only eight out of 40 (20%) aneurysms in patients without SAH (p<0.05).?CONCLUSIONS—MDU should be used routinely in cerebral aneurysm surgery, especially in cases of MCA aneurysms and after SAH. Present data show that a postoperative angiography becomes superfluous whenever there is good visualisation of the "working site" and MDU findings are clear.?? PMID:10601397

Stendel, R.; Pietila, T.; Al, H; Schilling, A.; Brock, M.

2000-01-01

156

Transcranial Doppler ultrasonography predicts cardiovascular events after TIA  

PubMed Central

Background Transient ischemic attack (TIA) patients are at high vascular risk. We assessed the value of extracranial (ECD) and transcranial (TCD) Doppler and duplex ultrasonography to predict clinical outcome after TIA. Methods 176 consecutive TIA patients admitted to the Stroke Unit were recruited in the study. All patients received diffusion-weighted imaging, standardized ECD and TCD. At a median follow-up of 27 months, new vascular events were recorded. Results 22 (13.8%) patients experienced an ischemic stroke or TIA, 5 (3.1%) a myocardial infarction or acute coronary syndrome, and 5 (3.1%) underwent arterial revascularization. ECD revealed extracranial ? 50% stenosis or occlusions in 34 (19.3%) patients, TCD showed intracranial stenosis in 15 (9.2%) and collateral flow patterns due to extracranial stenosis in 5 (3.1%) cases. Multivariate analysis identified these abnormal ECD and TCD findings as predictors of new cerebral ischemic events (ECD: hazard ratio (HR) 4.30, 95% confidence interval (CI) 1.75 to 10.57, P = 0.01; TCD: HR 4.73, 95% CI 1.86 to 12.04, P = 0.01). Abnormal TCD findings were also predictive of cardiovascular ischemic events (HR 18.51, 95% CI 3.49 to 98.24, P = 0.001). Conclusion TIA patients with abnormal TCD findings are at high risk to develop further cerebral and cardiovascular ischemic events. PMID:19642970

2009-01-01

157

Breast ultrasonography: state of the art.  

PubMed

Ultrasonography (US) is an indispensable tool in breast imaging and is complementary to both mammography and magnetic resonance (MR) imaging of the breast. Advances in US technology allow confident characterization of not only benign cysts but also benign and malignant solid masses. Knowledge and understanding of current and emerging US technology, along with the application of meticulous scanning technique, is imperative for image optimization and diagnosis. The ability to synthesize breast US findings with multiple imaging modalities and clinical information is also necessary to ensure the best patient care. US is routinely used to guide breast biopsies and is also emerging as a supplemental screening tool in women with dense breasts and a negative mammogram. This review provides a summary of current state-of-the-art US technology, including elastography, and applications of US in clinical practice as an adjuvant technique to mammography, MR imaging, and the clinical breast examination. The use of breast US for screening, preoperative staging for breast cancer, and breast intervention will also be discussed. PMID:23970509

Hooley, Regina J; Scoutt, Leslie M; Philpotts, Liane E

2013-09-01

158

Treatment of Endometriosis with Transvaginal Ultrasound-Guided Drainage and Recombinant Interleukin2 Left in the Cysts: A Third Clinical Trial  

Microsoft Academic Search

Background: To analyze the therapeutic results of recombinant interleukin-2 (rIL-2) left in the cysts after transvaginal ultrasound (US)-guided drainage of endometriomas as an alternative to surgery. Methods: Prospective and randomized clinical trial. A total of 25 consecutive patients were included. Two transvaginal US-guided punctures were performed, and 3 million IU of rIL-2 were left in the aspirated cysts once (group

Pedro Acién; Irene Velasco; Maribel Acién; Francisco Quereda

2010-01-01

159

Individual patient data systematic review and meta-analysis of optic nerve sheath diameter ultrasonography for detecting raised intracranial pressure: protocol of the ONSD research group  

PubMed Central

Background The purpose of the optic nerve sheath diameter (ONSD) research group project is to establish an individual patient-level database from high quality studies of ONSD ultrasonography for the detection of raised intracranial pressure (ICP), and to perform a systematic review and an individual patient data meta-analysis (IPDMA), which will provide a cutoff value to help physicians making decisions and encourage further research. Previous meta-analyses were able to assess the diagnostic accuracy of ONSD ultrasonography in detecting raised ICP but failed to determine a precise cutoff value. Thus, the ONSD research group was founded to synthesize data from several recent studies on the subject and to provide evidence on the diagnostic accuracy of ONSD ultrasonography in detecting raised ICP. Methods This IPDMA will be conducted in different phases. First, we will systematically search for eligible studies. To be eligible, studies must have compared ONSD ultrasonography to invasive intracranial devices, the current reference standard for diagnosing raised ICP. Subsequently, we will assess the quality of studies included based on the QUADAS-2 tool, and then collect and validate individual patient data. The objectives of the primary analyses will be to assess the diagnostic accuracy of ONSD ultrasonography and to determine a precise cutoff value for detecting raised ICP. Secondly, we will construct a logistic regression model to assess whether patient and study characteristics influence diagnostic accuracy. Discussion We believe that this IPD MA will provide the most reliable basis for the assessment of diagnostic accuracy of ONSD ultrasonography for detecting raised ICP and to provide a cutoff value. We also hope that the creation of the ONSD research group will encourage further study. Trial registration PROSPERO registration number: CRD42012003072 PMID:23919384

2013-01-01

160

Transvaginal Ultrasound in Patients With Low ?-Human Chorionic Gonadotropin Values: How Often Is the Study Diagnostic?  

Microsoft Academic Search

See related editorial, p 206.Study objective: To determine how often pelvic ultrasonography diagnoses or excludes ectopic pregnancy (EP) in patients who present with abdominal pain or vaginal bleeding and a ?-human chorionic gonadotropin (?-hCG) level lower than 1,000 mIU\\/mL. Methods: This was a retrospective chart review of all patients who presented to the ED of an urban teaching hospital from

Robert G Dart; Beth Kaplan; Christopher Cox

1997-01-01

161

A 2-year anatomical and functional assessment of transvaginal rectocele repair using a polypropylene mesh  

Microsoft Academic Search

This study reports the 2-year results of an original technique for rectocele repair by the vaginal route, using a combined sacrospinous suspension and a polypropylene mesh. Twenty-six women were successively operated between October 2000 and February 2003. Mean age was 63.7 years [range 35–92]. 19 women had had previous pelvic surgery for prolapse and\\/or urinary incontinence (73.1%), but none had had

Renaud de Tayrac; Olivier Picone; Aurélia Chauveaud-Lambling; Hervé Fernandez

2006-01-01

162

Transvaginal sonography as the ultimate diagnostic tool for the management of ectopic pregnancy: experience with 840 cases  

Microsoft Academic Search

Objective: To evaluate the efficacy of transvaginal sonography and serum?-hCG levels as diagnostic tools for deciding whether to perform operative laparoscopy in the treatment of presumed ectopic pregnancy (EP).Design: A prospective protocol for the evaluation and treatment of women with presumed EP.Setting: Department of Obstetrics and Gynecology, Haemek Medical Center, Afula, Israel.Patient(s): Eight hundred forty women with presumed EP who

Eliezer Shalev; Ilan Yarom; Moshe Bustan; Ehud Weiner; Izhar Ben-Shlomo

1998-01-01

163

Application of transvaginal hydrolaparoscopy for ovarian drilling using Nd:YAG laser in infertile women with polycystic ovary syndrome  

Microsoft Academic Search

Since transvaginal hydrolaparoscopy (THL) was introduced as the first-line procedure in the early stage of the exploration\\u000a of the tubo-ovarian structures in infertile women, it has been shown that THL is a less traumatic and a more suitable outpatient\\u000a procedure than diagnostic laparoscopy In the present study a minimally invasive surgery was carried out in infertile women\\u000a with polycystic ovary

Yuki Hirano; Hiroaki Shibahara; Satoru Takamizawa; Izumi Suzuki; Seiji Yamanaka; Tatsuya Suzuki; Hiroyuki Fujiwara; Mitsuaki Suzuki

2003-01-01

164

CA125 and transvaginal ultrasound monitoring in high-risk women cannot prevent the diagnosis of advanced ovarian cancer  

Microsoft Academic Search

Objectives.The main objective of screening is to identify cases of ovarian cancer in early stages. However, screening of women in the general population is ineffective due to a failure of detecting early-stage disease and high false positive rates of CA125 and transvaginal ultrasound (TVU) monitoring. The purpose of this study is to evaluate ovarian cancer screening by means of pelvic

R. I. Olivier; M. A. C. Lubsen-Brandsma; S. Verhoef; M. van Beurden

2006-01-01

165

Determination of bovine fetal sex by PCR using fetal fluid aspirated by transvaginal ultrasound-guided amniocentesis  

Microsoft Academic Search

Fetal sex can be determined by the polymerase chain reaction (PCR) using cells from fetal fluid collected by transvaginal ultrasound-guided amniocentesis. A total of 35 aspirates from 30 cows, 15 Holsteins and 15 Japanese Blacks at 59 to 250 d of pregnancy were used. Five cows were aspirated twice at a 10-d interval. A 5.0 MHz convex array transducer connected

S. Kamimura; N. Nishiyama; S. Ookutsu; K. Goto; K. Hamana

1997-01-01

166

Chromosomal analysis of early fetal losses in relation to transvaginal ultrasonographic detection of fetal heart motion after infertility  

Microsoft Academic Search

Objective: To evaluate the prognostic value of transvaginal ultrasound (TVUS) detection of fetal heart motion (FHM) in view of maternal age and chromosomal analysis of spontaneously aborted fetal tissue.Design: A 3-year retrospective, descriptive study.Setting: Two medical center-based infertility-care facilities.Patient(s): 336 pregnancies were initiated by intrauterine insemination or embryo transfer for women of reproductive age who were seeking infertility treatment.Intervention(s): None.Main

Cecilia Schmidt-Sarosi; Lisa Barrie Schwartz; Jennifer Lublin; Dinah Kaplan-Grazi; Peter Sarosi; Mary Ann Perle

1998-01-01

167

Transvaginal Oocyte Retrieval Complicated by Life-Threatening Obturator Artery Haemorrhage and Managed by a Vessel-Preserving Technique.  

PubMed Central

We report the case of a 36-year-old woman with secondary infertility who underwent routine transvaginal oocyte retrieval as part of IVF treatment. Four days following the procedure she presented with life threatening haemorrhagic shock. She underwent surgical laparotomy followed by CT and selective angiography, which demonstrated haemorrhage from a pseudoaneurysm of the obturator artery. The haemorrhage was successfully managed endovascularly with a vessel preserving covered stent. PMID:25484463

Bolster, Ferdia; Mocanu, Edgar; Geoghegan, Tony; Lawler, Leo

2014-01-01

168

The role of ultrasonography in the evaluation of diffuse liver disease.  

PubMed

The use of ultrasonography (US) to detect and characterize diffuse liver disease can be challenging, but remains a useful tool for the diagnosis and management of many diffuse parenchymal liver diseases such as cirrhosis, steatosis, and malignancies. Newer techniques, such as elastography, are proving useful for earlier detection of hepatic parenchymal changes. The role of US in the assessment of possible biliary ductal obstruction is well established, and Doppler US may provide additional physiologic information regarding hepatic blood flow. US plays a central role in target selection and guidance of percutaneous liver biopsies. PMID:25444098

Heller, Matthew T; Tublin, Mitchell E

2014-11-01

169

Echo intensity obtained from ultrasonography images reflecting muscle strength in elderly men  

PubMed Central

Background It is well known that loss of muscle mass (quantitative change) is a major change that occurs with aging. Qualitative changes in skeletal muscle, such as increased intramuscular fat, also occur as one ages. Enhanced echo intensity (EI) on ultrasonography images of skeletal muscle is believed to reflect muscle quality. Recent studies evaluating the quality of skeletal muscle using computer-aided gray scale analysis showed that EI is associated with muscle strength independently of age or muscle size in middle-aged and elderly women. The aim of the present study was to investigate whether muscle quality based on EI is associated with muscle strength independently of muscle size for elderly men. Methods A total of 184 elderly men (65–91 years) living independently in Kyoto, Japan, participated in this study. The EI, muscle thickness (MT), and subcutaneous fat thickness (FT) of the anterior compartment of the right thigh were determined by assessing ultrasonography images. The maximum isometric torque of knee extension at a knee angle of 90° was measured. Results The EI showed a significant negative correlation with muscle strength (r = ?0.333, P < 0.001). Multivariate regression analysis revealed that the MT and EI of the knee extensor muscle were independently associated with maximum isometric knee extension strength. Even when partial correlation analysis was performed with age, height, weight, and FT as control variables, EI was still significantly correlated with muscle strength. Conclusion The results of this study indicate that aging-related changes in muscle quality contribute to diminishing muscle strength. Ultrasonography is a low-cost, easily accessible, and safe method suitable for the assessment of EI as an index of muscle quality. PMID:23926426

Watanabe, Yuya; Yamada, Yosuke; Fukumoto, Yoshihiro; Ishihara, Tatsuro; Yokoyama, Keiichi; Yoshida, Tsukasa; Miyake, Motoko; Yamagata, Emi; Kimura, Misaka

2013-01-01

170

Diagnosis of aortic aneurysms by scintigraphy and ultrasonography  

SciTech Connect

Angioscintigraphy, performed on 50 patients suspected of aortic aneurysm and complemented by abdominal ultrasonography in 31 cases, disclosed: - Three cases of thoracic aortic aneurysm, 2 of which were confirmed by arteriography and surgery. It was impossible to perform surgery in the third case, no arteriography was done. Strict agreement with standard thoracic images had made the angioscintigraphic diagnosis seem correct. Twenty-seven cases of abdominal aortic aneurysms were confirmed by arteriography or surgery. Ultrasonography disclosed an abdominal aortic aneurysm in 26 cases, 20 of which were confirmed. The agreement of the two procedures in 10 unconfirmed cases led us to consider the diagnosis as correct. Angioscintigraphy appears to be a reliable procedure for detecting thoracic and abdominal aortic aneurysms. Ultrasonography is the simplest and least costly procedure for study of abdominal aortic aneurysms.

Caille, G. (Centre Hospitalier, Saint-Nazaire (France)); Chatal, J.F.; Tellier, J.L.; Talmant, C.; Guihard, R. (Centre Rene-Gauducheau, 44 - Nantes (France))

1981-10-01

171

Design of miniaturized illumination for transvaginal co-registered photoacoustic and ultrasound imaging  

PubMed Central

A novel lens-array based illumination design for a compact co-registered photoacoustic/ultrasound transvaginal probe has been demonstrated. The lens array consists of four cylindrical lenses that couple the laser beams into four 1-mm-core multi-mode optical fibers with optical coupling efficiency of ~87%. The feasibility of our lens array was investigated by simulating the lenses and laser beam profiles using Zemax. The laser fluence on the tissue surface was experimentally measured and was below the American National Standards Institute (ANSI) safety limit. Spatial distribution of hemoglobin oxygen saturation (sO2) of a mouse tumor was obtained in vivo using photoacoustic measurements at multiple wavelengths. Furthermore, benign and malignant ovaries were imaged ex vivo and evaluated histologically. The co-registered images clearly showed different patterns of blood vasculature. These results highlight the clinical potential of our system for noninvasive photoacoustic and ultrasound imaging of ovarian tissue and cancer detection and diagnosis. PMID:25401021

Salehi, Hassan S.; Wang, Tianheng; Kumavor, Patrick D.; Li, Hai; Zhu, Quing

2014-01-01

172

Design of miniaturized illumination for transvaginal co-registered photoacoustic and ultrasound imaging.  

PubMed

A novel lens-array based illumination design for a compact co-registered photoacoustic/ultrasound transvaginal probe has been demonstrated. The lens array consists of four cylindrical lenses that couple the laser beams into four 1-mm-core multi-mode optical fibers with optical coupling efficiency of ~87%. The feasibility of our lens array was investigated by simulating the lenses and laser beam profiles using Zemax. The laser fluence on the tissue surface was experimentally measured and was below the American National Standards Institute (ANSI) safety limit. Spatial distribution of hemoglobin oxygen saturation (sO2) of a mouse tumor was obtained in vivo using photoacoustic measurements at multiple wavelengths. Furthermore, benign and malignant ovaries were imaged ex vivo and evaluated histologically. The co-registered images clearly showed different patterns of blood vasculature. These results highlight the clinical potential of our system for noninvasive photoacoustic and ultrasound imaging of ovarian tissue and cancer detection and diagnosis. PMID:25401021

Salehi, Hassan S; Wang, Tianheng; Kumavor, Patrick D; Li, Hai; Zhu, Quing

2014-09-01

173

Computer-assisted measurement of cervical length from transvaginal ultrasound images  

NASA Astrophysics Data System (ADS)

We describe an image processing algorithm that identifies the anatomic landmarks of the cervix on a transvaginal ultrasound image and determines the standard cervical length. The system is composed of four stages: The first stage is adaptive speckle suppression using variable length sticks algorithm. The second stage is the location of the internal cervical opening or 'os' using a region-based segmentation. The third stage is delineation of the cervical canal. The fourth stage uses gray level summation patterns and prior knowledge to first localize the tissue boundary of the external cervix. A template is then used to determine the specific location of the external os. The cervical length is determined and calculated to image scale. For validation, 101 cervical ultrasound images were selected from a series of 37 examinations performed on 17 patients over an 8-month period. Repeated measurements of cervical length using the computer assisted method were compared with those of two experienced sonographers. The mean coefficient of variation for serial measurements was 1.1% for the computer assisted method and averaged 4.7% for the manual method. In a pairwise comparison, the mean cervical length for the computer method was not different from the mean manual cervical length.

Wu, Min; Fraser, Robert F.; Chen, Chang W.

2002-05-01

174

Study on the Characteristics of Contrast-Enhanced Ultrasound and Its Utility in Assessing the Microvessel Density in Ovarian Tumors or Tumor-Like Lesions  

PubMed Central

Angiogenesis is a critical factor in tumor growth and metastasis, and microvessel density (MVD) was an important parameter for assessing vessels in tumors. However, radiologic assessment of tumor vascularity is not yet well established. In our study, we aimed at investigating the efficacy of contrast-enhanced ultrasonography (CEUS) in exploring the vascularity of the ovarian tumors or tumor-like lesions to assess the relationship between the parameters of the peak intensity (PI) and area under curve (AUC) on CEUS and MVD in ovarian masses. Compared to the contrast-enhanced ultrasound technique, conventional ultrasound shows limitation in differentiating benign and malignant ovarian tumors. The former is promising in improving the sensitivity of detecting small vessels and blood flow in ovarian tumors. Our results showed clear differences in enhancement patterns between benign and malignant ovary tumors or tumor-like lesions. The PI and AUC in the malignant tumors were significantly higher than those in the benign tumors or tumor-like lesions (p=0.001 and =0.01, respectively). The MVD was 43.1 ± 20.4 in the benign tumors or tumor-like lesions and was 65.3 ± 22.3 in the malignant ones (p= 0.01). In both the benign and malignant groups, the PI and AUC were correlated significantly with the MVD (r=0.595, p = 0.001; r =0.533, p = 0.003, respectively). The PI and AUC in CEUS can reflect the MVD in ovarin tumors. The PI and AUC of the ovarian masses in the contrast transvaginal sonography show significant correlation with the angiogenesis and may help in assessing tumor vascularity in ovarian masses. PMID:21614152

Wang, Junyan; Lv, Faqin; Fei, Xiang; Cui, Qiuli; Wang, Longxia; Gao, Xuewen; Yuan, Zhixian; Lin, Qian; Lv, Yali; Liu, Aijun

2011-01-01

175

Photoacoustic ultrasonography and its potential application in mammography  

Microsoft Academic Search

This thesis studied photoacoustic ultrasonography (PAUS) and investigated its applicability in breast cancer detection. PAUS employs a short pulse of electromagnetic energy, at either near infrared or microwave frequency, to heat breast tissue. Rapid heating, resulting from inhomogeneous absorption of the energy pulse, generates ultrasonic waves. The energy absorption patterns can be reconstructed from these pressure waves recorded at a

Yuncai Fang

1997-01-01

176

Transvaginal ultrasound-guided local methotrexate administration as the first-line treatment for cesarean scar pregnancy: Follow-up of 18 cases.  

PubMed

Cesarean scar pregnancy (CSP) is a rare type of ectopic pregnancy, which occurs in previous cesarean section scar tissue, with an incidence of 1 in 1800-3000 pregnancies. Transvaginal ultrasound-guided local methotrexate (MTX) administration presents as a non-systemic option with possible better penetration to the pregnancy site. We present the management of 18 patients with CSP solely by transvaginal ultrasound-guided local MTX administration. All patients were treated with local MTX with a dose of 50?mg/m(2) . Eleven (61.1%) of the patients did not need any further intervention. Four patients (22.2%) were treated with additional single-dose systemic MTX due to inadequate alteration in blood ?-human chorionic gonadotrophin levels. Three patients (16.7%) required hysteroscopy and/or laparotomy. We suggest that transvaginal ultrasound-guided local MTX treatment may be considered as a first-line treatment for CSP. PMID:25491022

Cok, Tayfun; Kalayci, Hakan; Ozdemir, Halis; Haydardedeoglu, Bulent; Parlakgumus, Ayse H; Tarim, Ebru

2014-12-10

177

Second-trimester maternal serum alpha-fetoprotein, human chorionic gonadotropin, and unconjugated oestriol after early transvaginal multifetal pregnancy reduction.  

PubMed

Maternal serum alpha-fetoprotein (MSAFP), human chorionic gonadotropin (hCG), and unconjugated oestriol (UE3) are used as second-trimester screening markers for the detection of various fetal abnormalities. Previous studies have suggested that second-trimester MSAFP is consistently elevated after late first-trimester transabdominal multifetal pregnancy reduction (MFPR). The present study was undertaken to evaluate the levels of all three markers after early transvaginal MFPR. Maternal serum was examined for MSAFP, hCG, and UE3 at 16-18 weeks' gestation in 28 patients who underwent transvaginal MFPR at approximately 10 weeks' gestation. The mean interval between the reduction procedure and the screening test was 7.2 +/- 0.9 weeks. The mean MSAFP value in 24 patients carrying viable twins was 2.49 +/- 0.99 multiples of the median (MOM). Two patients had elevated MSAFP values: one in association with omphalocoele and the other in relation to an adverse pregnancy outcome. All but two patients had normal hCG values (mean 1.98 +/- 1.26 MOM). Two cases with elevated hCG were associated with an adverse pregnancy outcome. Unconjugated oestriol values were within the normal range in all patients (mean 1.69 +/- 0.61 MOM). These results suggest that early transvaginal MFPR, at approximately 10 weeks' gestation, does not appear to influence second-trimester MSAFP, hCG, and UE3 levels. The values of these markers may therefore be interpreted by using the same criteria as those for the general obstetric population. PMID:8878282

Groutz, A; Amit, A; Yaron, Y; Yovel, I; Wolman, I; Legum, C; Lessing, J B

1996-08-01

178

Double contrast-enhanced ultrasonography in preoperative Borrmann classification of advanced gastric carcinoma: comparison with histopathology  

PubMed Central

The purpose of this study was to investigate the accuracy of double contrast-enhanced ultrasonography (DCEUS) for assessing the Borrmann classification of advanced gastric carcinoma (AGC) preoperatively. Three hundred twenty nine patients with proved AGC were enrolled. DCEUS (intravenous microbubbles combined with combined with oral contrast-enhanced ultrasound) was performed preoperatively. The diagnostic accuracy of DCEUS in determining Borrmann classification was compared with postoperative pathological findings. The reliability of DCEUS was analyzed. The accuracy of DCEUS in determining the Borrmann classification of AGC was 91.49%. The intra- and inter-observer reproducibility was both almost perfect for assessing the Borrmann classification of AGC by DCEUS. DCEUS could be considered as an accurate, non-invasive, and reliable diagnostic method for preoperative Borrmann classification of advanced gastric carcinoma. PMID:24275807

Pan, Minqiang; Huang, Pintong; Li, Shiyan; Chen, Jian; Wei, Shumei; Zhang, Ying

2013-01-01

179

Comparison between endoluminal ultrasonography and spiral computerized tomography for the preoperative local staging of rectal carcinoma.  

PubMed

The aim of this study is to compare the efficacy of endoluminal ultrasonography (EUS) and spiral computerized tomography (SCT) in preoperative local staging of rectal carcinoma. EUS and SCT were performed prior to surgery in 78 patients with rectal carcinoma. After radical surgery, the preoperative findings were compared with histologic findings on the surgical specimen, and we assessed the values of EUS and SCT in staging the tumor. For T staging, accuracy was 84.6% for EUS, 70.5% for SCT (p < 0.05). For N staging, accuracy was 64.1% for EUS, 61.5% for SCT (p > 0.05). EUS is superior to SCT in judging tumor infiltrate depth, but neither could provide satisfactory assessments of lymph node metastases. PMID:20103950

Ju, Haixing; Xu, Dong; Li, Dechuan; Chen, Guiping; Shao, Guoliang

2009-04-01

180

Contrast-enhanced ultrasonography (voiding urosonography) of vesicoureteral reflux: state of the art.  

PubMed

Three methods are currently used to identify vesicoureteral reflux (VUR) in children, namely, radiographic voiding cystourethrography, radionuclide voiding cystography and, more recently, echo-enhanced voiding urosonography (VUS). Recent advances in tissue-harmonic and contrast-specific imaging techniques, together with the development of second-generation contrast agents, have improved the potential of ultrasonography both in the diagnosis and grading of VUR in children. Today, VUS is able to accurately assess the grade of reflux and the state of the urethra, previously considered fundamental limitations to the extensive use of this technique. The aim of our paper is to review the role of ultrasonography in the diagnosis of VUR, from the initial experiences up to the recent use of second-generation microbubbles combined with contrast-specific low-mechanical-index software. We discuss the advantages and limits of VUS with respect to radiographic and radionuclide imaging in the light of an analysis of the most recent literature, and we described the new VUS study technique using second-generation contrast media. Growing requests by paediatric nephrologists and surgeons require that even general radiologists become familiar with this technique. PMID:18074194

Zimbaro, G; Ascenti, G; Visalli, C; Bottari, A; Zimbaro, F; Martino, N; Mazziotti, S

2007-12-01

181

Prenatal Diagnosis of Sacrococcygeal Teratoma Using Two and Three-Dimensional Ultrasonography  

PubMed Central

Sacrococcygeal teratoma accounts for half of all fetal tumors, with a prevalence of 1?:?40,000 births. It is believed to originate from pluripotent cells in Hensen's nodule. Although most are benign, they are associated with high morbidity and mortality rates because the fetus develops congestive heart failure and hydrops. Factors leading to poor prognosis include solid components in the mass, and hydrops diagnosed before the 30th week. A case of prenatal sacrococcygeal teratoma diagnosed using B-mode and color Doppler two-dimensional ultrasonography (2DUS) is described, in which three-dimensional ultrasonography (3DUS) enabled characterization of the extent of fetal lesions and allowed the parents to understand the pathological condition better. A 20-year-old primigravida was referred with a solid mass diagnosed in the lumbosacral spine. Examinations performed at our institution revealed pregnancy of 23 weeks and 4 days, with a female fetus presenting a bulky solid mass with cystic components and calcifications, measuring 7.7 × 9.1 × 12.2?cm, starting from the sacral region, with internal flow seen on color Doppler. A new ultrasound confirmed fetal death at 25 weeks and 4 days. Postnatal findings confirmed the diagnosis of sacrococcygeal teratoma. 3DUS can be used in cases of sacrococcygeal teratoma to assess the development of tumor during the prenatal and to allow better understanding of this anomaly by the parents. PMID:22924141

Rios, Livia Teresa Moreira; Araujo Júnior, Edward; Nardozza, Luciano Marcondes Machado; Moron, Antonio Fernandes; Martins, Marília da Glória

2012-01-01

182

Prenatal diagnosis of sacrococcygeal teratoma using two and three-dimensional ultrasonography.  

PubMed

Sacrococcygeal teratoma accounts for half of all fetal tumors, with a prevalence of 1?:?40,000 births. It is believed to originate from pluripotent cells in Hensen's nodule. Although most are benign, they are associated with high morbidity and mortality rates because the fetus develops congestive heart failure and hydrops. Factors leading to poor prognosis include solid components in the mass, and hydrops diagnosed before the 30th week. A case of prenatal sacrococcygeal teratoma diagnosed using B-mode and color Doppler two-dimensional ultrasonography (2DUS) is described, in which three-dimensional ultrasonography (3DUS) enabled characterization of the extent of fetal lesions and allowed the parents to understand the pathological condition better. A 20-year-old primigravida was referred with a solid mass diagnosed in the lumbosacral spine. Examinations performed at our institution revealed pregnancy of 23 weeks and 4 days, with a female fetus presenting a bulky solid mass with cystic components and calcifications, measuring 7.7 × 9.1 × 12.2?cm, starting from the sacral region, with internal flow seen on color Doppler. A new ultrasound confirmed fetal death at 25 weeks and 4 days. Postnatal findings confirmed the diagnosis of sacrococcygeal teratoma. 3DUS can be used in cases of sacrococcygeal teratoma to assess the development of tumor during the prenatal and to allow better understanding of this anomaly by the parents. PMID:22924141

Rios, Livia Teresa Moreira; Araujo Júnior, Edward; Nardozza, Luciano Marcondes Machado; Moron, Antonio Fernandes; Martins, Marília da Glória

2012-01-01

183

A novel screening test for detecting graft thrombosis after pancreatic transplantation using contrast-enhanced ultrasonography with sonazoid.  

PubMed

Pancreatic graft thrombosis is the primary cause of nonimmunologic graft loss, with an incidence ranging from 5% to 15%. Therefore, developing a screening test to detect graft thrombosis after pancreatic transplantation is important. We created a screening test to assess graft thrombosis after pancreatic transplantation using contrast-enhanced ultrasonography (CEUS) with Sonazoid in addition to Doppler ultrasonography. A total of seven patients were examined using CEUS after undergoing pancreatic transplantation. All patients were observed to have a clear blood flow from the horizontal region to the peripheral region of the splenic vein in the pancreatic graft, and only one of the seven patients exhibited a blood flow in the horizontal portion of the splenic vein on Doppler ultrasonography performed immediately after pancreatic transplantation. Results from CEUS with Sonazoid showed the blood flow in the splenic vein and parenchyma of the pancreatic graft in detail, despite the slow and lateral blood flow in the splenic vein of the pancreatic graft immediately after transplantation. PMID:25131070

Ito, T; Kenmochi, T; Nishikawa, T; Maruyama, M; Kusaka, M; Sasaki, H; Asano, T; Matsubara, H; Hoshinaga, K

2014-01-01

184

Soft tissue foreign body removal technique using portable ultrasonography.  

PubMed

Retained foreign objects account for as much as 2% of soft tissue injuries sustained in the wilderness. Subcutaneously embedded fragments are often missed during the initial medical evaluation and may result in morbidity secondary to delayed removal. Although the utility of ultrasonography in the emergency department for the detection of retained objects is established, the potential use of point-of-care ultrasound to aid with foreign body removal in the field has not been well described. We present 2 case reports that demonstrate the value of ultrasonography in detecting and successfully removing foreign bodies sustained in the wilderness, and outline a procedural technique that minimizes morbidity and uses equipment available in wilderness medical field kits. We propose that with the advent of portable and handheld ultrasound units, foreign body removal in the field has become feasible and may decrease the morbidity of soft tissue injuries, particularly in austere and wilderness environments with limited access to immediate medical care. PMID:22835803

Paziana, Karolina; Fields, J Matthew; Rotte, Masashi; Au, Arthur; Ku, Bon

2012-12-01

185

Transrectal ultrasonography of anorectal diseases: advantages and disadvantages  

PubMed Central

Transrectal ultrasonography (TRUS) has been widely accepted as a popular imaging modality for Epub ahead of print evaluating the lower rectum, anal sphincters, and pelvic floor in patients with various anorectal diseases. It provides excellent visualization of the layers of the rectal wall and of the anatomy of the anal canal. TRUS is an accurate tool for the staging of primary rectal cancer, especially for early stages. Although magnetic resonance imaging is a modality complementary to TRUS with advantages for evaluating the mesorectum, external sphincter, and deep pelvic inflammation, three-dimensional ultrasonography improves the detection and characterization of perianal fistulas and therefore plays a crucial role in optimal treatment planning. The operator should be familiar with the anatomy of the rectum and pelvic structures relevant to the preoperative evaluation of rectal cancer and other anal canal diseases, and should have technical proficiency in the use of TRUS combined with an awareness of its limitations compared to magnetic resonance imaging. PMID:25492891

2015-01-01

186

Endoscopic ultrasonography: Challenges and opportunities in the developing world  

PubMed Central

Endoscopic ultrasonography (EUS) has become a vital diagnostic modality for the evaluation of mediastinal lymphadenopathy, pancreatic cysts and masses, anorectal pathology, subepithelial gastrointestinal lesions, and for the staging of many gastrointestinal and pulmonary malignancies. Establishing a EUS program in a developing country presents many challenges. Doing so in Pakistan has led to the identification of the following challenges: initial investment, ongoing costs (particularly fine needle aspiration needle costs), awareness and cytopathology. Endoscopic ultrasonography has revolutionized aspects of the practice of gastroenterology and oncology in the West. This technique is becoming increasingly available in the developing world, where it poses unique challenges to its practice. These challenges include those relating to service initiation and maintenance costs, physician awareness, and on-site cytopathology access. If these issues are anticipated and addressed in ways appropriate to local circumstances, obstacles to the institution of EUS programs can be overcome. PMID:24868485

Ahmed, Furqaan

2014-01-01

187

Transvaginal Sacrospinous Ligament Fixation for Pelvic Organ Prolapse Stage III and Stage IV Uterovaginal and Vault Prolapse  

PubMed Central

The result of transvaginal sacrospinous ligament fixation technique, as part of the vaginal repair procedure for massive uterovaginal (Pelvic Organ Prolapse stage III and stage IV and vault prolapse) is evaluated. A total of 32 women were included in the present case series. Marked uterovaginal prolapse was present in 28 women and four had vault prolapse following hysterectomy. Patients with vault prolapse and marked uterovaginal prolapse underwent sacrospinous colpopexy. The mean follow-up period was 2.5 years. Out of the 28 patients with previous marked uterovaginal prolapse, only one had small cystocele 3 years after the surgery. This patient was asymptomatic and did not require repeat surgery. One woman had post-operative urinary tract infection and two had buttock discomfort, one had ischiorectal abscess and two had cuff cellulitis. All complications were dealt with successfully. No other major intra- and post-operative complications occurred. Transvaginal sacrospinous colpopexy can be performed together with vaginal hysterectomy, with marked uterovaginal prolapse and vault prolapse.

Gupta, Pratiksha

2015-01-01

188

Endoscopic ultrasonography in the management of pancreatic cancer  

NASA Astrophysics Data System (ADS)

Pancreatic cancer diagnosis and management has been enhanced with the application of endoscopic ultrasound. The close proximity of the pancreas to the stomach and duodenum permits detailed imaging with intraluminal ultrasonography and staging of pancreatic tumors. EUS directed fine needle aspiration and injection may be successfully employed with patients with pancreatic cancer. Expandable metal stents can palliate patients with obstruction of the pancreaticobiliary tract as well as the gastroduodenum. The efficacy of EUS in the management of pancreatic cancer is critically reviewed.

Trowers, Eugene A.

2001-05-01

189

Ultrasonography of entheseal insertions in the lower limb in spondyloarthropathy  

Microsoft Academic Search

Objective: To compare ultrasonography (US) with clinical examination in the detection of entheseal abnormality of the lower limb in patients with spondyloarthropathy (SpA).Methods: 35 patients with SpA (ankylosing spondylitis 27; psoriatic arthritis 7; reactive arthritis 1) underwent independent clinical and ultrasonographic examination of both lower limbs at five entheseal sites—superior pole and inferior pole of patella, tibial tuberosity, Achilles tendon,

P V Balint; D Kane; H Wilson; I B McInnes; R D Sturrock

2002-01-01

190

A Tailgut Cyst—Cystic Mass Diagnosed by Prenatal Ultrasonography  

PubMed Central

Tailgut cysts are congenital lesions found in the presacral space. These have been mainly identified in adults and are rare in children, especially neonates. Here, we present the case of a neonate with a presacral cystic mass detected by prenatal ultrasonography that was diagnosed as a tailgut cyst after postnatal surgical removal. When a presacral cyst is encountered, tailgut cyst should be considered in the differential diagnosis. PMID:23943703

Chung, Ki Yeong; Lee, Na Mi; Choi, Eung Sang; Yoo, Byoung Hoon; Kim, Gwang Jun; Cha, Seong Jae; Kim, Gi Hyeon; Kim, Mi Kyung

2012-01-01

191

[Thyroid ultrasonography--considerations and progress in routine diagnostic examinations].  

PubMed

Thyroid ultrasonography is becoming increasingly important because it is easy to perform non-invasively and provides much more information than other imaging devices such as CT and MRI. It is possible to infer the causes of diffuse goiter and thyrotoxicosis by the internal echo level and blood flow analysis. The combination of B mode and color Doppler imaging is also useful for the diagnosis of thyroid nodules. Malignant B mode findings include an irregular shape, indistinct border, hypo and inhomogeneous internal echo, and fine calcification. New diagnostic criteria for thyroid nodules and a flow chart for the selection of indications of aspiration biopsy cytology have been developed by the Japan Association of Breast and Thyroid Sonology. Recent improvements in thyroid ultrasonography include 3D imaging, contrast agents and tissue elasticity imaging. 3D ultrasonography and contrast agents have made it possible to display vascular structures more accurately. Tissue elasticity imaging is expected to play an important role in the diagnosis of thyroid carcinomas since it evaluates tissue stiffness objectively. Tissue elastography may be useful for the differentiation of follicular adenomas from follicular carcinomas, which is still one of the most difficult clinical challenges for all endocrinologists. It also provides detailed information on the efficacy of thyroid interventions. New combinations with tissue elastography and other imaging devices are under development. PMID:24724429

Yamamoto, Hiroyuki; Kitaoka, Masafumi

2014-01-01

192

New trend in endoscopic surgery: transvaginal appendectomy NOTES (Natural Orifice Transluminal Endoscopic Surgery).  

PubMed

Natural Orifice Transluminal Endoscopic Surgery is a new method of mini invasive surgery, which involves passing surgical instruments, and a tiny camera, through a natural orifice, such as the mouth, vagina, urethra or rectum, what provides the access to the desired organ. The procedure is approved due to its benefits - less pain, quicker recoveries, fewer complications and no scar - as it lets us avoid major incisions through the skin, muscle and nerves of the abdomen. Besides that the transluminal access is considered to be the most safe and feasible for clinical application. Here are discussed the two operations of Transvaginal Appendectomy performed in Caucasus - Academician N. Kipshidze University Hospital in Tbilisi. The first patient - a 28-year woman, weight - 72 kg, height - 180 cm, married, has one child - was submitted to the hospital with anamnesis of 48 hours acute appendicitis, typical clinical semiotics and laboratory records. In the second case the patient was a 22-year old woman, height - 170 cm, weight - 68 kg, married, with 2 children. She was hospitalized with 24 hours acute appendicitis anamnesis and typical clinical semiotics and laboratory records. Both operations were performed under general anesthesia, using Karl Storz GmbH & Co. equipment. The duration of the first procedure was 76 minutes and the second operation lasted for 88 minutes. The operations were made without any technical difficulties or complications. None of the patients had the need of non-narcotic analgesia during the post-operational period. No gynecological or surgical problems or any complications were detected during the observation period. The patients had superior postoperative evolution, so the stationary stay made up 36 hours after the first operation and 30 hours after the second. Essentially NOTES is a new trend in endoscopic surgery - the non-scar surgery with major advantages compared to the conventional - the NOTES takes endoscopic surgery one step further in terms of reducing pain and avoiding long hospitalization and is much more effective. The doctors hope to have more developed and flexible endoscopic surgical tools as they are planning to perform more complicated procedures in the future. Taking in consideration the appropriate experience of the operator the procedure is safe, more physiological and precise. Natural-orifice surgery becomes more familiar and as more procedures are successfully performed, the acceptance of it will grow. We consider NOTES is a challenge in surgery and in the nearest future in case of suitable technical support it will replace not only conventional medicine but laparoscopic too. PMID:19359710

Tabutsadze, T; Kipshidze, N

2009-03-01

193

Transvaginal 3D Image-Guided High Intensity Focused Ultrasound Array  

NASA Astrophysics Data System (ADS)

The goal of this project is to develop a transvaginal image-guided High Intensity Focused Ultrasound (HIFU) device using piezocomposite HIFU array technology, and commercially-available ultrasound imaging. Potential applications include treatment of uterine fibroids and abnormal uterine bleeding. The HIFU transducer was an annular phased array, with a focal length range of 30-60 mm, an elliptically-shaped aperture of 35×60 mm, and an operating frequency of 3 MHz. A pillow-shaped bag with water circulation will be used for coupling the HIFU energy into the tissue. An intra-cavity imaging probe (C9-5, Philips) was integrated with the HIFU array such that the focal axis of the HIFU transducer was within the image plane. The entire device will be covered by a gel-filled condom when inserted in the vaginal cavity. To control it, software packages were developed in the LabView programming environment. An imaging algorithm processed the ultrasound image to remove noise patterns due to the HIFU signal. The device will be equipped with a three-dimensional tracking system, using a six-degrees-of-freedom articulating arm. Necrotic lesions were produced in a tissue-mimicking phantom and a turkey breast sample for all focal lengths. Various HIFU doses allow various necrotic lesion shapes, including thin ellipsoidal, spherical, wide cylindrical, and teardrop-shaped. Software control of the device allows multiple foci to be activated sequentially for desired lesion patterns. Ultrasound imaging synchronization can be achieved using hardware signals obtained from the imaging system, or software signals determined empirically for various imaging probes. The image-guided HIFU device will provide a valuable tool in visualization of uterine fibroid tumors for the purposes of planning and subsequent HIFU treatment of the tumor, all in a 3D environment. The control system allows for various lesions of different shapes to be optimally positioned in the tumor to cover the entire tumor volume. Real-time ultrasound imaging for guidance and monitoring of HIFU treatment provides an effective method for outpatient-based procedures.

Held, Robert; Nguyen, Thuc Nghi; Vaezy, Shahram

2005-03-01

194

Transvaginal surgery in the octogenarian using cadaveric fascia for pelvic prolapse and stress incontinence: minimal one-year results compared to younger patients  

Microsoft Academic Search

ObjectivesTo evaluate prospectively our transvaginal surgery experience in octogenarian women and compare the results with those in younger patients. As our population has aged, the treatment of incontinence and prolapse in women older than 80 years, known as octogenarians, has become a significant clinical issue.

Jeffrey M Carey; Gary E Leach

2004-01-01

195

Rate of Change of Serial ?–Human Chorionic Gonadotropin Values as a Predictor of Ectopic Pregnancy in Patients With Indeterminate Transvaginal Ultrasound Findings  

Microsoft Academic Search

Study objective: To determine the predictive value of the rate of change of serial ?–human chorionic gonadotropin (hCG) values in patients with symptoms suggestive of ectopic pregnancy but who have indeterminate transvaginal ultrasound findings, and to determine whether the predictive value was enhanced depending on whether the endometrial cavity was empty at ultrasound examination. Methods: A retrospective study was performed

Robert G Dart; Julie Mitterando; Linda M Dart

1999-01-01

196

[Intraoperative ultrasonography in the diagnosis of liver metastasis from gastrointestinal neoplasms].  

PubMed

The authors illustrate their experience in the systematic use of intraoperative ultrasonography of the liver in patients undergoing surgery due to gastrointestinal cancer. The liver is the organ in which metastases from colorectal, stomach, pancreatic, and biliary cancer are most often localised. Between January 1991 and April 1992 95 patients underwent intraoperative ultrasonographic controls of the liver. In all cases the liver was studied using traditional image diagnosis: standard ultrasonography and CAT. On the basis of their experience the authors observed 12 cases negative for metastases using CAT and traditional ultrasonography which were positive using intraoperative ultrasonography, 2 cases which were positive for secondary hepatic lesions using traditional diagnostic tools but negative following histological tests guided by intraoperative ultrasonography. In the case of false negatives using traditional methods, those metastases revealed by intraoperative ultrasonography were above all located deep down and in segments which are difficult to explore, or were so small that they were not visible or palpable during intraoperative controls of the viscera. Intraoperative ultrasonography of the liver has been found to be a more sensitive test (97% of the best series) than standard ultrasonography (65%) or CAT (43%). Higher resolution due to the characteristics of the method is coupled with the possibility that intraoperative ultrasonography may be used to guide biopsies of the metastases revealed, thus allowing histological confirmation to be obtained: for this reason the risk of false positives is virtually zero.(ABSTRACT TRUNCATED AT 250 WORDS) PMID:8121589

Cabula, C; Nicolosi, A; Calò, P G; Angioni, C; Addis, E; Tarquini, A

1993-10-31

197

Lung ultrasonography and pediatric cardiac surgery: first experience with a new tool for postoperative lung complications.  

PubMed

Lung ultrasonography is a diagnostic tool increasingly used in critical care. Few data are available for the pediatric population. We describe our experience with lung ultrasonography for 5 pediatric patients with common post-cardiac surgery lung complications (pleural effusion, pneumothorax, atelectasis, pneumonia). Ultrasonography was useful also for lung recruitment. Such data were confirmed by chest radiographs or by computed tomography, or both. Lung ultrasonography can be considered as a useful, real-time, bedside tool to detect specific lung diseases, reliably implementing radiographic images and potentially decreasing the total number of radiographs in critically ill children with congenital heart diseases. PMID:24694455

Vitale, Vincenzo; Ricci, Zaccaria; Cogo, Paola

2014-04-01

198

Contrast-Enhanced Ultrasonography of Hepatocellular Carcinoma After Chemoembolisation Using Drug-Eluting Beads: A Pilot Study Focused on Sustained Tumor Necrosis  

Microsoft Academic Search

The purpose of this study was to assess the use of contrast-enhanced ultrasonography (CEUS) and the sustained antitumor effect\\u000a of drug-eluting beads used for transarterial chemoembolisation (TACE) of unresectable hepatocellular carcinoma (HCC). Ten\\u000a patients with solitary, unresectable HCC underwent CEUS before, 2 days after, and 35 to 40 days after TACE using a standard\\u000a dose (4 ml) of drug-eluting beads (DC Beads; Biocompatibles,

Hippocrates Moschouris; Katerina Malagari; Marina Georgiou Papadaki; Ioannis Kornezos; Dimitrios Matsaidonis

2010-01-01

199

Sensitivity and specificity of median nerve ultrasonography in diagnosis of carpal tunnel syndrome  

PubMed Central

Background Although controversial, recent studies have demonstrated advantages of sonographic techniques in the diagnosis of carpal tunnel syndrome (CTS). The purpose of this study was to assess the utility of median nerve ultrasonography in the diagnosis of CTS in Iranian patients. Methods Ninety patents with clinically suspected CTS were studied. Based on gold standard electromyography/nerve conduction velocity studies, wrists with CTS were divided into three groups on the basis of severity of CTS, ie, mild, moderate, and severe. In addition, both sides of the wrist were examined using sonography. Transverse images of the median nerve were obtained and median nerve cross-section areas were measured at three levels, ie, immediately proximal to the carpal tunnel inlet, at the carpal tunnel inlet, and at the carpal tunnel outlet. Furthermore, flexor retinaculum thickness was evaluated. Results The mean age of the studied patients was 48.52 ± 12.17 years. Median values of the median nerve cross-section at the carpal tunnel inlet, carpal tunnel outlet, and proximal carpal tunnel significantly differed between the wrists with and without CTS (P < 0.05). Comparisons between the CTS groups (mild, moderate, and severe) and non-CTS wrists demonstrated that the median cross-sections of median nerve at the carpal tunnel inlet, carpal tunnel outlet, and inlet proximal carpal tunnel were significantly greater in the severe CTS group than in the other three groups (P < 0.05). The results showed that the median nerve cross-section at the three levels of carpal tunnel could only fairly differentiate severe CTS from other cases. Conclusion The present study demonstrated that median nerve ultrasonography cannot replace the gold standard test (nerve conduction velocity) for the diagnosis of CTS because of low overall sensitivity and specificity, although it might provide useful information in some patients. PMID:22319247

Yazdchi, Mohammad; Tarzemani, Mohammad Kazem; Mikaeili, Haleh; Ayromlu, Hormoz; Ebadi, Hooman

2012-01-01

200

Antenatal screening for intrauterine growth retardation with umbilical artery Doppler ultrasonography.  

PubMed Central

To assess the usefulness of continuous wave Doppler ultrasonography as an antenatal screening tool for the detection of intrauterine growth retardation and fetal compromise 2097 singleton pregnancies were studied. Umbilical artery velocity waveforms were obtained at 28, 34, and 38 weeks of gestation, from which the pulsatility index, A/B ratio, and resistance parameter were calculated. No abnormal features or indices of neonatal outcome were adequately predicted. The most sensitive index for being delivered of a growth retarded infant (less than 5th centile birth weight for gestation) was an A/B ratio at 34 weeks (sensitivity 40%, specificity 84%). Other measures that show poor neonatal nutritional state (ponderal index, skinfold thickness, and ratio of mid-arm circumference to head circumference) were even less well predicted. Acute and chronic hypoxia as determined by Apgar score, pH in blood from the cord artery, and packed cell volume correlated poorly with umbilical artery waveform indices, and there was no obvious difference between the indices of those who subsequently required operative or instrumental delivery for fetal distress and those requiring no intervention. There were three unexplained stillbirths in the series, in each of which the fetus had shown waveform patterns that suggested increased peripheral resistance, though the technique did not appear to be useful for predicting the time of subsequent death. Screening for small for dates babies in a three stage programme was of no value regardless of the threshold or index chosen. Obstetricians should resist the temptation to introduce screening with Doppler ultrasonography until its proper role has been determined. PMID:2496788

Beattie, R. B.; Dornan, J. C.

1989-01-01

201

Evaluation of Abdominal Ultrasonography Mass Screening for Hepatocellular Carcinoma in Taiwan  

PubMed Central

Mass screening with abdominal ultrasonography (AUS) has been suggested as a tool to control adult hepatocellular carcinoma (HCC) in individuals, but its efficacy in reducing HCC mortality has never been demonstrated. This study aimed to assess the effectiveness of reducing HCC mortality by mass AUS screening for HCC based on a program designed and implemented in the Changhua Community-based Integrated Screening (CHCIS) program with an efficient invitation scheme guided by the risk score. We invited 11,114 (27.0%) of 41,219 eligible Taiwanese subjects between 45 and 69 years of age who resided in an HCC high-incidence area to attend a risk score-guided mass AUS screening between 2008 and 2010. The efficacy of reducing HCC mortality was estimated. Of the 8,962 AUS screening attendees (with an 80.6% attendance rate), a total of 16 confirmed HCC cases were identified through community-based ultrasonography screening. Among the 16 screen-detected HCC cases, only two died from HCC, indicating a favorable survival. The cumulative mortality due to HCC (per 100,000) was considerably lower in the invited AUS group (17.26) compared with the uninvited AUS group (42.87) and the historical control group (47.51), yielding age- and gender-adjusted relative mortality rates of 0.69 (95% confidence interval [CI]: 0.56-0.84) and 0.63 (95% CI: 0.52-0.77), respectively. Conclusion: The residents invited to community-based AUS screening for HCC, compared with those who were not invited, showed a reduction in HCC mortality by ?31% among subjects aged 45-69 years who had not been included in the nationwide vaccination program against hepatitis B virus infection. (Hepatology 2014;59:1840–1849) PMID:24002724

Yeh, Yen-Po; Hu, Tsung-Hui; Cho, Po-Yuan; Chen, Hsiu-Hsi; Yen, Amy Ming-Fang; Chen, Sam Li-Sheng; Chiu, Sherry Yueh-Hsia; Fann, Jean Ching-Yuan; Su, Wei-Wen; Fang, Yi-Jen; Chen, Shih-Tien; San, Hsiao-Ching; Chen, Hung-Pin; Liao, Chao-Sheng

2014-01-01

202

Electroencephalography and transcranial Doppler ultrasonography in neonatal citrullinemia.  

PubMed

The authors present a case of citrullinemia with a genotype of argininosuccinate synthetase (ASS1), c.380 G>A (p.R127Q)/c.380 G>A (p.R127Q), in two alleles. A 3-day-old female infant presented with status epilepticus and coma. Laboratory data showed hyperammonemia and marked lactic acidosis in the blood and cerebrospinal fluid; electroencephalography showed severely suppressed cerebral activity and focal paroxysmal volleys of slow and sharp waves (< 1Hz) over the left hemisphere. Real-time transcranial Doppler ultrasonography showed a brain edema and high peaked systolic and low diastolic flows in basal, anterior, and middle cerebral arteries; however, immediately after a blood exchange transfusion, systolic flows were lower and diastolic flows were higher. The resistance indices were significantly different (means: 0.58 vs. 0.37; p=0.01). The patient was placed on diet therapy. After six blood exchange transfusions and peritoneal dialysis, her neurologic examination results and serum ammonia and lactate values were normal. The authors found that electroencephalography and transcranial Doppler ultrasonography were useful for the diagnosis and follow-up treatment of neonatal citrullinemia. PMID:25443352

Su, Pen-Hua; Chen, Jia-Yuh; Chen, Yung-Jung; Niu, Dau-Ming; Hsu, Ju-Hui; Lee, Inn-Chi

2014-11-01

203

Ultrasonography reveals nail thickening in patients with chronic plaque psoriasis.  

PubMed

Nail psoriasis is usually investigated and diagnosed by clinical examination. Ultrasonography is a non-invasive imaging technique for studying soft tissue involvement. The objective of this study was to estimate nail involvement in patients with chronic plaque psoriasis by ultrasonography. Prevalence, clinical type and severity of nail involvement according to nail psoriasis and severity index (NAPSI) were investigated in 138 patients with psoriasis. The thickness of the plate and bed of the fingernails was measured in 54 patients with psoriasis, 46 healthy controls and 37 patients with chronic eczema, using an ultrasonographic system equipped with a frequency transducer of 18 MHz. The prevalence of nail psoriasis was 73 % (102 out of 138). Onycholysis and thickening of the nail plate were the most common clinical type affecting 56 and 50 % of patients, respectively; splinter haemorrhages was the less common involving 10 % of patients. The mean NAPSI score was 18.4 ± 17.5 (SD; range 0-107). The thickness of fingernail plate and bed was significantly higher in patients with psoriasis with nail disease compared to healthy controls and patients with chronic eczema (p < 0.001). There was a linear correlation between NAPSI and plate and bed nail thickness (r = 0.52 and r = 0.38, p = 0.001). Increased nail plate and bed thickness was observed also in patients with psoriasis without clinically apparent nail involvement. In conclusion, thickening of the nail is a common feature of nail psoriasis also in patients without clinically apparent nail involvement. PMID:23011659

Gisondi, P; Idolazzi, L; Girolomoni, G

2012-11-01

204

Ultrasonography-Assisted Arthroscopic Proximal Iliotibial Band Release and Trochanteric Bursectomy  

PubMed Central

We describe arthroscopic iliotibial band release and trochanteric bursectomy assisted by intraoperative ultrasonography for accurate placement of arthroscopic portals and to ensure adequate decompression of the peritrochanteric space. We have found ultrasonography for endoscopic iliotibial band release a useful tool to assist with localizing the site and length of decompression. PMID:24400195

Weinrauch, Patrick; Kermeci, Sharon

2013-01-01

205

Randomised controlled trial of ultrasonography in diagnosis of acute appendicitis, incorporating the Alvarado score  

Microsoft Academic Search

Objectives To determine whether diagnosis by graded compression ultrasonography improves clinical outcomes for patients with suspected appendicitis. Design A randomised controlled trial comparing clinical diagnosis (control) with a diagnostic protocol incorporating ultrasonography and the Alvarado score (intervention group). Setting Single tertiary referral centre. Participants 302 patients (age 5›82 years) referred to the surgical service with suspected appendicitis. 160 patients were

Charles D Douglas; Neil E Macpherson; Patricia M Davidson; Jonathon S Gani; Callaghan NSW

2000-01-01

206

Development of human fetal kidney in obstructive uropathy: Correlations with ultrasonography and urine biochemistry  

Microsoft Academic Search

Development of human fetal kidney in obstructive uropathy: Correlations with ultrasonography and urine biochemistry. In utero urethral obstruction results in bilateral hydronephrosis and severe fetal and post-natal morbidity and mortality. Obstetrical management depends on the indirect evaluation of fetal renal function by ultrasonography and biochemical analysis. No direct evaluation of the severity and possible reversibility of renal lesions is available.

Farida Daïkha-Dahmane; Marc Dommergues; Françoise Muller; Françoise Narcy; Mireille Lacoste; Agnes Beziau; Yves Dumez; Marie-Claire Gubler; Marie Claire Gubler

1997-01-01

207

Patient satisfaction and quality of care at four diagnostic imaging procedures: mammography, double-contrast barium enema, abdominal ultrasonography and vaginal ultrasonography  

Microsoft Academic Search

.   The objective of this study was to measure patient satisfaction and to investigate the practical implications of monitoring\\u000a the quality of care at four radiology procedures. A survey was conducted immediately after the examinations in eight radiology\\u000a departments: 550 patients attending for mammography, 110 for double-contrast barium enema (DCBE), 97 for abdominal ultrasonography\\u000a and 90 for vaginal ultrasonography. Outcome

K. Løken; S. Steine; E. Lærum

1999-01-01

208

Transperineal ultrasonography for evaluation of the perianal fistula and abscess in pediatric Crohn disease: preliminary study  

PubMed Central

Purpose: To assess the feasibility and effectiveness of transperineal ultrasonography (TPUS) for the evaluation of perianal Crohn disease (PCD) in pediatric patients. Methods: Between September 2010 and August 2013, 64 TPUS examinations were performed in 43 patients (34 males and 9 females; mean age±standard deviation, 13.3±2.4 years; age range, 6 to 17 years) to evaluate PCD. The pain severity, location, and activity of perianal fistula, the presence of an abscess, and anal canal hyperemia were retrospectively evaluated. Spearman rank correlation analysis was performed to assess the relationship between the severity of the pain and the fistula activity, the presence of an abscess, and anal canal hyperemia. Results: All examinations were successfully performed. Thirty-nine examinations (60.9%) were performed without any pain experienced by the patient, 19 examinations (29.7%) with mild pain, five examinations (7.8%) with moderate pain, and one examination (1.6%) with severe pain. The pain severity was correlated with the fistula activity (P<0.01). An anterior fistula location was more common than a posterior location. Active fistulas and abscesses were identified during 30 examinations (46.9%) and 12 examinations (18.8%), respectively. Anal canal hyperemia was identified in 31 examinations (48.4%). Conclusion: TPUS with a color Doppler study is useful for visualizing a perianal fistula or abscess and for assessing its inflammatory activity in pediatric Crohn patients. PMID:25038808

2014-01-01

209

Contrast-enhanced ultrasonography for the determination of Crohn’s disease activity – preliminary experience  

PubMed Central

Summary Background Contrast-enhanced ultrasound (CEUS) is a recent non-invasive modality, which may partially replace currently used techniques (endoscopy, CT enterography and MR enterography) in the diagnostics and assessment of Crohn’s disease (CD). The aim of the study was to analyze early experience in the use of CEUS for the measurement of activity and staging of CD. Material/Methods Eleven patients previously diagnosed with CD were included in the study. They underwent contrast-enhanced ultrasonography (SonoVue, Bracco), low-dose CT enterography (LDCTE), assessment of laboratory markers of inflammation and clinical CD activity index (CDAI). Contrast enhancement was evaluated using a semi-quantitative method and a quantitative method that included measurement of peak enhancement (PE), enhancement curve rise time (RT) and wash-in-rate (WiR). Results Ileal wall thickening was observed in all patients. Semi-quantitative method was used to observe CD activity in CEUS in 10 cases that perfectly matched LDCTE findings. There was a moderate positive correlation between PE and CDAI (r=0.65, p<0.001). There was no significant relationship between perfusion parameters and laboratory markers of inflammation. Conclusions CEUS is a promising modality for non-invasive assessment of pathologic ileal vascularization in the course of Crohn’s disease. Intensity of enhancement in CEUS reflects activity of the disease detected in LDCTE and correlates with CDAI. PMID:24723988

Bia?ecki, Marcin; Bia?ecka, Agnieszka; Laskowska, Katarzyna; K?opocka, Maria; Liebert, Ariel; Lemanowicz, Adam; Serafin, Zbigniew

2014-01-01

210

Treatment of Endometriosis with Transvaginal Ultrasound-Guided Drainage under GnRH Analogues and Recombinant Interleukin2 Left in the Cysts  

Microsoft Academic Search

Background: To analyze the therapeutic results of one dose of 3 million IU of recombinant interleukin-2 (rIL-2) left intracyst (group I) versus two doses with a 1-month interval (group II) after transvaginal ultrasound (US)-guided drainage of endometriomas under the effect of GnRH analogues. Methods: Prospective and randomized clinical trial (helped by a random number table) at a University Hospital. Twenty-four

Pedro Acién; Gloria Pérez-Albert; Francisco J. Quereda; Marisa Sánchez-Ferrer; Ana García-Almela; Irene Velasco

2005-01-01

211

Transvaginal repair of a vesico-vaginal fistula using a mobilised vaginal flap to form the bladder base: a case report  

Microsoft Academic Search

We describe a case of a vesico-vaginal fistula in a 32-year-old lady presenting with true urinary incontinence. There was\\u000a a 1.5×1.5 cm deficit in the bladder wall and the left ureteric orifice was very close to the edge of the defect. For a successful\\u000a transvaginal repair, we used a mobilized vaginal flap to bridge the defect in the bladder wall. This

J. B. Sharma; A. Seth; S. Mittal

2006-01-01

212

A transvaginal ultrasound study comparing transobturator tape and tension-free vaginal tape after surgical treatment of female stress urinary incontinence  

Microsoft Academic Search

This study was carried out to compare ultrasonographic findings on patients after transobturator tape (TOT) and tension-free vaginal tape (TVT) procedures to evaluate displacement of tapes up to a 2-year follow-up and to test the correlation between bladder outlet obstruction and the tape position. Forty-nine patients had a transvaginal ultrasonographic evaluation after TOT (n=31) or TVT (n=18) procedures. Twenty-one patients

Renaud de Tayrac; Xavier Deffieux; Arnaud Resten; Séverin Doumerc; Christian Jouffroy; Hervé Fernandez

2006-01-01

213

Imaging of a Renal Artery Aneurysm Detected Incidentally on Ultrasonography  

PubMed Central

Renal artery aneurysms occur with a frequency of less than 1% of the general population. Even if they are usually asymptomatic and incidentally found, they can be complicated with life-threatening conditions like rupture, thrombosis, embolism, or hypertension. Thus, once diagnosed, they should be fully evaluated with further imaging and treated when indicated. We present the case of a patient who was referred for ultrasonography for an unrelated reason. The examination demonstrated a hyperechoic focus near the right kidney. Further imaging workup with MDCT established the diagnosis of a right renal artery aneurysm which was saccular in shape and peripherally calcified. This ring-like calcification was also visible in a KUB radiography which was also performed. After presenting the case, various aspects of this rare entity are discussed. PMID:24963433

Rafailidis, Vasileios; Gavriilidou, Anna; Liouliakis, Christos; Poultsaki, Maria; Theodoridis, Triantafyllos; Charalampidis, Vasileios

2014-01-01

214

Impact of portable duplex ultrasonography in head and neck reconstruction.  

PubMed

We have reviewed the use of portable duplex ultrasonography (PDU) in 12 patients who underwent soft tissue/bone head and neck reconstruction, aiming to determine its role in the design and management of such complex cases. According to our data, there were modifications either of the surgical plan or of patient's management, based on PDU findings, in 9 (75%) of 12 patients. The use of ultrasound directed to subtle modifications in 3 patients (25%) but to significant changes of the surgical plan in the other 3 patients (25%). Also, the use of duplex ultrasound impacted significantly the postoperative management in 4 patients (33.33%). Thus, significant impact of PDU in patient's treatment was recorded in 58.33% of cases. Portable ultrasound represents generally available method for preoperative, intraoperative, and postoperative diagnosis and decision making in free tissue transfer, hence could replace in the future the unidirectional Doppler in the hands of head and neck surgeons. PMID:22337392

Gravvanis, Andreas; Tsoutsos, Dimosthenis; Delikonstantinou, Iraklis; Dimitriou, Vasilios; Katsikeris, Nick; Karakitsos, Dimitrios

2012-01-01

215

Non-contact photoacoustic tomography and ultrasonography for tissue imaging  

PubMed Central

The detection of ultrasound in photoacoustic tomography (PAT) and ultrasonography (US) usually relies on ultrasonic transducers in contact with the biological tissue. This is a major drawback for important potential applications such as surgery and small animal imaging. Here we report the use of remote optical detection, as used in industrial laser-ultrasonics, to detect ultrasound in biological tissues. This strategy enables non-contact implementation of PAT and US without exceeding laser exposure safety limits. The method uses suitably shaped laser pulses and a confocal Fabry-Perot interferometer in differential configuration to reach quantum-limited sensitivity. Endogenous and exogenous inclusions exhibiting optical and acoustic contrasts were detected ex vivo in chicken breast and calf brain specimens. Inclusions down to 0.5 mm in size were detected at depths well exceeding 1 cm. The method could significantly expand the scope of applications of PAT and US in biomedical imaging. PMID:22254164

Rousseau, Guy; Blouin, Alain; Monchalin, Jean-Pierre

2011-01-01

216

Ultrasonography of normal and abnormal appendix in children  

PubMed Central

Appendicitis is the most common acute surgical emergency of childhood. Since the original report by Puylaert in 1986, the use of ultrasonography in the diagnosis of appendicitis has been the subject of considerable study. Among the reported diagnostic criteria, the maximal outer diameter (MOD) of the appendix is accepted as the one of the most reliable criteria used to differentiate between a normal appendix and acute appendicitis. However, MOD measurement is subject to inaccuracies because luminal distention by non-compressible, non-inflammatory material such as fecal material, or increased maximal mural thickness due to reactive mucosal lymphoid hyperplasia, or a medical cause due to a generalized gastrointestinal disease, such as Crohn’s disease, can cause the measurement to exceed the upper limits of normality. The aim of this article is to introduce the spectrum of ultrasonographic findings in the normal and abnormal appendix and eventually to reduce unnecessary surgery in children. PMID:21532869

Park, Noh Hyuck; Oh, Hwa Eun; Park, Hee Jin; Park, Ji Yeon

2011-01-01

217

Prenatal diagnosis of limb abnormalities: role of fetal ultrasonography  

PubMed Central

Fetal ultrasonografy is the most important tool to provide prenatal diagnosis of fetal anomalies. The detection of limb abnormalities may be a complex problem if the correct diagnostic approch is not established. A careful description of the abnormality using the rigth nomenclature is the first step. Looking for other associated abnormalities is the threshold to suspect chromosomal abnormalities or single gene disorder. According to the patogenic point of view, limb abnormalities may be the result of malformation, deformation, or disruption. The prenatal diagnosis and the management of limb abnormalities involve a multidisciplinary team of ostetrician, radiologist/sonologist, clinical geneticist, neonatologist, and orthopedic surgeons to provide the parents with the information regarding etiology of the disorder, prognosis, option related to the pregnancy and recurrence risk for future pregnancies. The aim of this review is to describe the importance of detailed fetal ultrasonography in prenatal diagnosis of limb abnormalities. PMID:22439035

Ermito, Santina; Dinatale, Angela; Carrara, Sabina; Cavaliere, Alessandro; Imbruglia, Laura; Recupero, Stefania

2009-01-01

218

Miniprobe Endoscopic Ultrasonography Has Limitations in Determining the T Stage in Early Colorectal Cancer  

PubMed Central

Background/Aims Mini-probe endoscopic ultrasonography (mEUS) is a useful diagnostic tool for accurate assessment of tumor invasion. The aim of this study was to estimate the accuracy of mEUS in patients with early colorectal cancer (ECC). Methods Ninety lesions of ECC underwent mEUS for pre-treatment staging. We divided the lesions into either the mucosal group or the submucosal group according to the mEUS findings. The histological results of the specimens were compared with the mEUS findings. Results The overall accuracy for assessing the depth of tumor invasion (T stage) was 84.4% (76/90). The accuracy of mEUS was significantly lower for submucosal lesions compared to mucosal lesions (p=0.003) and it was lower for large tumors (?2 cm) (p=0.034). The odds ratios of large tumors and submucosal tumors affecting the accuracy of T staging were 3.46 (95% confidence interval [CI], 1.05 to 11.39) and 6.25 (95% CI, 1.85 to 25.14), respectively. When submucosal tumors were combined with large size, the odds ratio was 14.67 (95% CI, 1.46 to 146.96). Conclusions The overall accuracy of T stage determination with mEUS was considerably high in patients with ECC; however, the accuracy decreased when tumor size was >2 cm or the tumor had invaded the submucosal layer. PMID:23560151

Tsung, Pei Chuan; Park, Jong Hyeok; Kim, Sun Young; Park, Won Wo; Kim, Hyun Tae; Kim, Jin Nam; Kang, Yun Kyung; Moon, Jeong Seop

2013-01-01

219

Repeated ultrasound-guided transvaginal oocyte retrieval from cyclic Murrah buffaloes (Bubalus bubalis): oocyte recovery and quality.  

PubMed

The present study was undertaken to explore the potential of the Murrah breed of buffaloes as donors of oocytes and to find out the recovery rate and oocyte quality in cyclic Murrah buffaloes subjected to oocyte recovery once a week. Murrah buffaloes (n = 5) were synchronized for estrus by a single prostaglandin injection schedule. The animals were subjected to transvaginal oocyte retrieval (TVOR) once weekly for 6 weeks, starting from Day 7 of the oestrous cycle (Day 0 = day of oestrus). TVOR was performed using an ultrasound machine with a 5 MHz transvaginal transducer, single lumen 19-gauge, 60 cm long needle and a constant vacuum pressure of 50 mmHg. The number and size of follicles in each ovary was determined before puncture. The follicles were characterized on the basis of their diameter as small (3-5 mm), medium (6-9 mm) and large (> or = 10 mm). The oocytes recovered were classified as grade A, cumulus-oocytes complexes (COCs) with > or = 5 layers of cumulus cells; grade B, those with two to four layers; grade C, partially denuded oocytes; and grade D, completely denuded oocytes. The mean (+/- S.E.M) number of small, medium and large follicles, and the number of total follicles observed per animal per session, which was 2.2 +/- 0.3, 0.6 +/- 0.2, 0.9 +/- 0.1 and 3.7 +/- 0.3, respectively, did not differ between animals or between puncture sessions. Small follicles constituted a major proportion (59%) of the total observed follicles. A mean (+/- S.E.M) number of 3.0 +/- 0.3 follicles were punctured and 2.0 +/- 0.3 oocytes recovered per animal per session, with a recovery rate of 68%. Out of the total 61 oocytes recovered, 36 (59%) were of grades A + B whereas 25 (41%) were of grades C + D. In conclusion, this study describes the potential of cyclic Murrah buffaloes as donors of oocytes collected by repeated TVOR once a week, without any adverse effects on follicular growth and oocyte recovery. It also describes an efficient system for carrying out TVOR in buffaloes. PMID:15913926

Gupta, V; Manik, R S; Chauhan, M S; Singla, S K; Akshey, Y S; Palta, P

2006-01-01

220

Drinking Status of Heavy Drinkers Detected by Arrival Time Parametric Imaging Using Sonazoid-Enhanced Ultrasonography: Study of Two Cases  

PubMed Central

Chronic heavy consumption of alcohol is associated with increased risks of developing liver cirrhosis, hepatocellular carcinoma, and esophageal varices. Cessation of alcohol consumption is the most important requirement in treating these diseases. However, judging whether patients have actually maintained abstinence from alcohol requires reliance on their reports, which vary substantially across individuals using the test methods currently available. Arrival time parametric imaging (At-PI) using Sonazoid-enhanced ultrasonography is regarded as a useful approach for assessing the progression of lesions that have developed in liver parenchyma. In this study, we report two cases for whom this approach was successfully applied to indicate the drinking status of a heavy drinker. At-PI enables approximate and objective assessment of the drinking status of patients, independent of their reports; therefore, it is a promising method for providing information about drinking status. PMID:21503166

Wakui, Noritaka; Takayama, Ryuji; Mimura, Takahiko; Kamiyama, Naohisa; Maruyama, Kenichi; Sumino, Yasukiyo

2011-01-01

221

The accuracy of the report of hepatic steatosis on ultrasonography in patients infected with hepatitis C in a clinical setting: A retrospective observational study  

PubMed Central

Background Steatosis is occasionally reported during screening ultrasonography in patients with hepatitis C virus (HCV). We conducted a retrospective observational study to assess the factors associated with steatosis on ultrasonography and the relationship between steatosis on ultrasound versus biopsy in patients infected with HCV in a clinical setting. Our hypothesis was ultrasonography would perform poorly for the detection of steatosis outside of the context of a controlled study, primarily due to false-positive results caused by hepatic fibrosis and inflammation. Methods A retrospective review of ultrasound reports was conducted on patients infected with HCV in a tertiary care gastroenterology clinic. Reports were reviewed for the specific documentation of the presence of steatosis. Baseline clinical and histologic parameters were recorded, and compared for patients with vs. without steatosis. Multiple logistic regression analysis was performed on these baseline variables. Liver biopsies were reviewed by two pathologists, and graded for steatosis. Steatosis on biopsy was compared to steatosis on ultrasound report, and the performance characteristics of ultrasonography were calculated, using biopsy as the gold standard. Results Ultrasound reports were available on 164 patients. Patients with steatosis on ultrasound had a higher incidence of the following parameters compared to patients without steatosis: diabetes (12/49 [24%] vs. 7/115 [6%], p < 0.001), fibrosis stage >2 (15/48 [31%] vs. 16/110 [15%], p = 0.02), histologic grade >2 (19/48 [40%] vs. 17/103 [17%], p = 0.002), and ALT (129.5 ± 89.0 IU/L vs. 94.3 ± 87.0 IU/L, p = 0.01). Histologic grade was the only factor independently associated with steatosis with multivariate analysis. When compared to the histologic diagnosis of steatosis (n = 122), ultrasonography had a substantial number of false-positive and false-negative results. In patients with a normal ultrasound, 8/82 (10%) had >30% steatosis on biopsy. Among patients with steatosis reported on ultrasound, only 12/40 (30%) had >30% steatosis on biopsy review. Conclusion Steatosis on ultrasound is associated with markers of inflammation and fibrosis in HCV-infected patients, but does not consistently correlate with steatosis on biopsy outside of the context of a controlled study. Clinicians should be skeptical of the definitive diagnosis of steatosis on hepatic ultrasonography. PMID:15829009

Hepburn, Matthew J; Vos, Jeffrey A; Fillman, Eric P; Lawitz, Eric J

2005-01-01

222

The Effect of Raloxifene on Risk of Breast Cancer in Postmenopausal Women Results From the MORE Randomized Trial  

Microsoft Academic Search

Main Outcome Measures New cases of breast cancer, confirmed by histopathol- ogy. Transvaginal ultrasonography was used to assess the endometrial effects of ral- oxifene in 1781 women. Deep vein thrombosis or pulmonary embolism were deter- mined by chart review. Results Thirteen cases of breast cancer were confirmed among the 5129 women assigned to raloxifene vs 27 among the 2576 women

Steven R. Cummings; Stephen Eckert; Kathryn A. Krueger; Deborah Grady; Trevor J. Powles; Jane A. Cauley; Larry Norton; Thomas Nickelsen; Nina H. Bjarnason; Monica Morrow; Marc E. Lippman; Joan E. Glusman; Alberto Costa; V. Craig Jordan

2010-01-01

223

Current practice of lung ultrasonography (LUS) in the diagnosis of pneumothorax: a survey of physician sonographers in Germany  

PubMed Central

Background The purpose of this study was to survey the current practice of the use of lung ultrasonography (LUS) in the diagnosis of pneumothorax. Methods Physician sonographers, accredited for diagnostic ultrasonography in surgery, anaesthesia and medicine were studied. Questions addressed the frequency of exposure to patients with suspected pneumothorax, frequency of LUS use, preferences regarding technical aspects of LUS examination, assessment of diagnostic accuracy of LUS and involvement in teaching. Results Of the respondents, 55.1% used LUS ‘always’ or ‘frequently’ for suspected pneumothorax. Also, 35.5% of physicians rated LUS as ‘always reliable’ in ruling out pneumothorax, and 21.3% of respondents rated LUS as ‘always reliable’ in ruling in pneumothorax. The mode of performing LUS for pneumothorax was highly variable. Statistically significant differences were found regarding the likelihood of LUS usage, the combined use of M-Mode and B-mode scanning and the confidence to exclude pneumothorax based on LUS findings for physicians with frequent exposure to pneumothorax cases. Conclusions Physicians' use of LUS in the diagnosis of pneumothorax is modest. Confidence in diagnostic accuracy is not comprehensive. Further research is required to establish the most efficient way of performing LUS in this scenario to achieve the highest possible diagnostic accuracy and reliable documentation of examination results. PMID:25411591

2014-01-01

224

Transvaginal ovarian trauma, poor responders and improvement of success rates in IVF: anecdotal data and a hypothesis.  

PubMed

In this report, we propose an intervention capable of improving IVF outcomes in subfertile women with poor ovarian response. This intervention derives from anecdotal data and observations in our daily practice, but most importantly from trials on experimental models and subfertile women with Polycystic Ovarian Syndrome (PCOS). Our hypothesis suggests that transvaginal induction of trauma to the ovary in the cycle preceding IVF should benefit poor ovarian responders and their lowered pregnancy rates by increasing - at least - the number of retrieved oocytes during oocyte retrieval. Up-to-the minute data show that, via this means, there is a unique response of the ovarian surface epithelium and stroma to the induced trauma. The potential pathways of this beneficial response involve an improvement of the raised gonadotrophins to act either through the mechanical reduction of the size of the ovary or through alterations of the hormonal profile by lowering LH, inhibin and local androgen concentrations through hypothalamic-pituitary axis feedbacks, the induction of increased blood flow to the ovaries, a differentiated local immune reaction and a non-elucidated as yet role of reactive oxygen species. In this report, we also describe the technique and the associated possible negative points while we try to point out the needed research steps to ensure its efficiency before it enters daily clinical practice. PMID:24837687

Siristatidis, Charalampos; Vogiatzi, Paraskevi; Bettocchi, Stefano; Basios, George; Mastorakos, George; Vrachnis, Nikos

2014-08-01

225

Functional and Anatomic Outcome After Transvaginal Rectocele Repair Using Collagen Mesh: A Prospective Study  

Microsoft Academic Search

PURPOSE  This study was designed to evaluate rectocele repair using collagen mesh.METHODS  32 female patients underwent surgical repair using collagen mesh. Outcome was assessed in 29 patients and preoperative assessment included standardized questionnaire, clinical examination, and defecography. At the six-month follow-up, patients answered a standardized questionnaire and underwent clinical examination. At the 12-month follow-up, patients answered a standardized questionnaire, underwent clinical examination,

Daniel Altman; Jan Zetterström; Annika López; Bo Anzén; Christian Falconer; Fredrik Hjern; Anders Mellgren

2005-01-01

226

The role of chest ultrasonography in the management of respiratory diseases: document II  

PubMed Central

Chest ultrasonography can be a useful diagnostic tool for respiratory physicians. It can be used to complete and widen the general objective examination also in emergency situations, at the patient’s bedside. The aim of this document is to promote better knowledge and more widespread use of thoracic ultrasound among respiratory physicians in Italy. This document II is focused on advanced approaches to chest ultrasonography especially in diagnosing sonographic interstitial syndrome with physical hypotheses about the genesis of vertical artifacts, differential diagnosis of cardiogenic pulmonary edema and non-cardiogenic pulmonary edema, raising diagnostic suspicion of pulmonary embolism, ultrasound characterization of lung consolidations and the use of ultrasonography to guide procedural interventions in pulmonology. Finally, document II focuses on chest ultrasonography as useful diagnostic tool in neonatal and pediatric care. PMID:23937897

2013-01-01

227

Sex detection of the bovine fetus using linear array real-time ultrasonography  

E-print Network

SEX DETECTION OF THE BOVINE FETUS USING LINEAR ARRAY REAL-TINE ULTRASONOGRAPHY A Thesis DONALD W I DEMAN I JR Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE May 1990 Major Subject: Veterinary Physiology SEX DETECTION OF THE BOVINE FETUS USING LINEAR ARRAY REAL-TIME ULTRASONOGRAPHY A Thesis by Donald Wideman, Jr. Approved as to style and content by: Duane C. raemer (Chair...

Wideman, Donald

2012-06-07

228

Comparison of Ultrasonography and Fine Needle Aspiration Cytology in the Diagnosis of Malignant Breast Lesions  

PubMed Central

Introduction: Breast cancer is the most common cancer of women worldwide and usually presents as lump in the breast. Ultrasonography and Fine Needle Aspiration Cytology (FNAC) are two investigational tools often used to differentiate malignant breast lump from benign one. Aims and Objects: To find out and compare the sensitivity, specificity and predictive values of ultrasonography and FNAC in diagnosing malignant breast lump. Material and Methods: Patients who presented with clinically palpable breast lump at the department of Surgery, RIMS, India, from September, 2010 to August, 2012, were included. Recurrent lumps, breast abscess and cystic breast lumps were excluded. All the patients underwent Ultrasonographic evaluation using 7.5 MHz probe (©SIEMENS, Sonoline Versa Plus) at the department of Radiodiagnosis, RIMS and FNAC at the department of Pathology, RIMS. All the patients underwent excision of the lumps and tissues were sent for Histopathological examination. Sensitivity, specificity and predictive values of ultrasonography and FNAC were calculated taking Histopathological result as the gold standard. Values were compared. Results: Sixty patients with 62 breast lumps (40 benign and 22 malignant) were included. FNAC reported 42 lumps as benign and 19 as malignant and was indeterminate in 1 case. Ultrasonography reported 36 cases as benign, 18 as malignant and 6 as indeterminate; it failed to detect breast lump in 2 cases. Sensitivity, specificity, positive and negative predictive values of ultrasonography and FNAC in diagnosing malignant breast lump were respectively 94.74%, 100%, 100%, 97.22% and 90.48%, 100%, 100%, 95.24%. Conclusion: Ultrasonography and FNAC are 100% specific in diagnosing malignant breast lesion. Although Ultrasonography appears more sensitive than FNAC, the percentage of indeterminate report is higher with Ultrasonography. PMID:24551655

Takhellambam, Yumjaobabu Singh; Lourembam, Sunil Singh; Sapam, Opendro Singh; Kshetrimayum, Raju Singh; Ningthoujam, Bhubon Singh; Khan, Tousif

2013-01-01

229

Correlation of Masseter Muscle Thickness and Intermolar Width - An Ultrasonography Study  

PubMed Central

Background: To determine the association between the thickness of masseter muscle and the maxillary dental arch width. To explore the influence of gender on masseter muscle thickness. Materials & methods: Seventy subjects (35 females and 35 males) of age 18 to 25 years were selected for the study based on class I molar relationship. The masseter muscle thickness of the right and left sides in every subject were found out through ultrasound scanning of the muscle, in both relaxed and clenched states. The maxillary dental arch width was measured on the study model with an electronic caliper. Student t test, Pearson’s Correlation Coefficient was performed to assess the sample. Results: Masseter Muscle Thickness showed a positive correlation with Maxillary Dental Arch Width r ?0.74. The masseter muscle thickness is greater in male subjects in both relaxed (0.001

Ultrasonography Study. J Int Oral Health 2013; 5(2):28-34. PMID:24155588

Tircoveluri, Saritha; Singh, Johar Rajvinder; Rayapudi, Naveen; Karra, Arjun; Begum, Mohammadi; Challa, Padmalatha

2013-01-01

230

Role of single photon emission computed tomography and transcranial Doppler ultrasonography in clinical vasospasm.  

PubMed

This report presents our experience with Transcranial Doppler (TCD) ultrasonography and Single Photon Emission Computed Tomography (SPECT) in the assessment of patients with aneurysmal subarachnoid haemorrhage (SAH). It was designed to evaluate clinical vasospasm with both TCD and SPECT and determine their diagnostic value. Twenty-eight consecutive patients were examined with both TCD and SPECT, performed within 24 hours of each other. They had a total of 45 TCDs and 46 SPECT scans. Eight patients (29%) developed clinical vasospasm, noted from day 2 to day 11 post subarachnoid haemorrhage; these patients underwent TCDs and SPECT scans when the diagnosis of vasospasm was made. Twenty patients (71%) did not demonstrate clinical vasospasm throughout their hospital stay and underwent TCDs and SPECT scans within the first 2 weeks of their SAH, mostly between day 2 and day 10, the period of greatest risk for vasospasm. TCD and SPECT sensitivity for clinical vasospasm was 100% and 50% respectively, their specificity was only 20% and 60%. TCD sensitivity for symptomatic vasospasm was found to be excellent, whereas SPECT was not found to be as useful. We conclude that TCD is the preferred method in the evaluation of patients with subarachnoid haemorrhage. PMID:12217668

Jabre, Anthony; Babikian, Viken; Powsner, Rachel A; Spatz, Edward L

2002-07-01

231

Lesions of biliary hamartoms can be diagnosed by ultrasonography, computed tomography and magnetic resonance imaging  

PubMed Central

Aims: This study is to compare the value of ultrasonography, computed tomography (CT) and magnetic resonance imaging (MRI) in the diagnosis of biliary hamartomas. Methods: From 2003 to 2013, 15 cases of liver biopsies were found to have biliary hamartomas, including 3 cases excluded from this study. The remaining 12 patients were 7 women and 5 men aged from 28 to 66 years (mean age, 53 years). Ultrasonography examinations were performed by two different scanners using 3.5- to 5.0-MHz convex array transducers. Eight patients were examined by plain and contrast CT including 2 cases with Sensation Cardiac 64 and 6 cases with Somatom definition dual source CT. MRI was performed by a 3 T system using an eight-channel phased-array torso coil. Using pathology slides, lesions were classified into class 1 (predominantly solid), class 2 (intermediate, mixed solid and cystic), and class 3 (predominantly cystic). Results: Patients with biliary hamartomas have distributed lesions. Ultrasonography can be used to diagnose biliary hamartomas, with occasional mistakes. CT is effective in the diagnosis of biliary hamartomas. MRI is capable of diagnosing biliary hamartomas. Histopathological examination provides a direct means to classify the degrees of lesions caused by biliary hamartomas. Conclusions: Biliary hamartomas showed characteristic features on imaging findings by ultrasonography, CT, and MRI. Although abdominal ultrasonography could detect suspected biliary hamartomas, the best choice for further diagnosis is MRI examination instead of CT. In addition, follow-up ultrasonography examinations are necessary. PMID:25419370

Liu, Shaoling; Zhao, Bin; Ma, Jincai; Li, Jichang; Li, Xin

2014-01-01

232

Non-contact photoacoustic tomography and ultrasonography for biomedical imaging  

NASA Astrophysics Data System (ADS)

Photoacoustic tomography (PAT) and ultrasonography (US) of biological tissues usually rely on ultrasonic transducers for the detection of ultrasound. For an optimum sensitivity, transducers require a physical contact with the tissue using a coupling fluid (water or gel). Such a contact is a major drawback in important potential applications such as surgical procedures on human beings and small animal imaging in research laboratories. On the other hand, laser ultrasonics (LU) is a well established optical technique for the non-contact generation and detection of ultrasound in industrial materials. In this paper, the remote optical detection scheme used in industrial LU is adapted to allow the detection of ultrasound in biological tissues while remaining below laser exposure safety limits. Both non-contact PAT (NCPAT) and non-contact US (NCUS) are considered experimentally using a high-power single-frequency detection laser emitting suitably shaped pulses and a confocal Fabry-Perot interferometer in differential configuration. It is shown that an acceptable sensitivity is obtained while remaining below the maximum permissible exposure (MPE) of biological tissues. Results were obtained ex vivo on chicken breast specimens with embedded inclusions simulating blood vessels optical properties. Sub-mm inclusions are readily detected at depths approaching 1 cm. The method is expected to be applicable to living tissues.

Rousseau, Guy; Lévesque, Daniel; Blouin, Alain; Monchalin, Jean-Pierre

2012-02-01

233

Non-contact photoacoustic tomography and ultrasonography for brain imaging  

NASA Astrophysics Data System (ADS)

Photoacoustic tomography (PAT) and ultrasonography (US) of biological tissues usually rely on transducer arrays for the detection of ultrasound. Obtaining the best sensitivity requires a physical contact with the tissue using an intermediate coupling fluid (water or gel). This type of contact is a major drawback for several applications such as neurosurgery. Laser-ultrasonics is an established optical technique for the non-contact generation and detection of ultrasound in industrial materials. In this paper, the non-contact detection scheme used in laser-ultrasonics is adapted to allow probing of ultrasound in biological tissues while remaining below laser exposure safety limits. Both non-contact PAT (NCPAT) and non-contact US (NCUS) are demonstrated experimentally using a single-frequency detection laser emitting suitably shaped pulses and a confocal Fabry-Perot interferometer. It is shown that an acceptable sensitivity is obtained while remaining below the maximum permissible exposure (MPE) of biological tissues. Results obtained ex vivo with a calf brain specimen show that sub-mm endogenous and exogenous inclusions can be detected at depths exceeding 1 cm. When fully developed, the technique could be a unique diagnostic tool in neurosurgery providing deep imaging of blood vessels, blood clots and blood oxygenation.

Rousseau, Guy; Blouin, Alain; Monchalin, Jean-Pierre

2012-02-01

234

Applications of diagnostic ultrasonography in small ruminant reproductive management.  

PubMed

Modern portable ultrasound machines provide the veterinary clinician with an inexpensive and non-invasive method to further examine the reproductive tract of both male and female sheep on farm which should take no more than 5 min with the results available immediately. Unlike cattle, ultrasound examination of the ovaries is not undertaken because failure to cycle during the normal season is rare in sheep and there are no common ovarian conditions causing acyclicity. Accurate diagnosis of foetal number has greatly improved the nutritional management of late gestation ewes over the past 30 years. Late gestation nutritional supply in response to foetal demand greatly reduces perinatal lamb mortality by ensuring lamb birthweight and ewe colostrum accumulation. The contents of vaginal prolapse have been determined using ultrasonography which has led to an improved method for correction. A retained foetus when second stage labour is considered to have been completed, and uterine torsion, can be identified during ultrasound examination allowing timely correction. Ultrasonographic examination of palpable scrotal abnormalities can provide much useful information particularly in the diagnosis of epididymitis, orchitis and testicular atrophy. PMID:22341010

Scott, P R

2012-02-01

235

Cardiac ultrasonography in structural abnormalities and arrhythmias. Recognition and treatment.  

PubMed Central

Fetal cardiac ultrasonography has become an important tool in the evaluation of fetuses at risk for cardiac anomalies. It can both guide prenatal treatment and assist the management and timing of delivery. We recommend that a fetal echocardiogram be done when there is a family history of congenital heart disease; maternal disease that may affect the fetus; a history of maternal drug use, either therapeutic or illegal; evidence of other fetal abnormalities; or evidence of fetal hydrops. The optimal timing of evaluation is 18 to 22 weeks' gestation. An entire range of structural cardiac defects can be visualized prenatally, including atrioventricular septal defect, ventricular septal defect, cardiomyopathy, ventricular outlet obstruction, and complex cardiac defects. The outcome for a fetus with a recognized abnormality is unfavourable, with less than 50% surviving the neonatal period. Fetal cardiac arrhythmias are also a common occurrence, 15% in the series described here. Premature atrial or ventricular contractions are most commonly seen and usually require no treatment. Supraventricular tachycardia can result in hydrops and require in utero treatment to prevent fetal demise. Complete heart block, particularly in association with structural heart disease, has a poor prognosis for fetal survival. Images PMID:8236970

Brook, M M; Silverman, N H; Villegas, M

1993-01-01

236

Optimisation of positive and expiratory pressure for maximal delivery of oxygen to tissues using oesophageal Doppler ultrasonography.  

PubMed Central

OBJECTIVE--To assess oesophageal Doppler ultrasonography as a convenient means of optimising positive end expiratory pressure for maximal delivery of oxygen to tissues. DESIGN--Measurements of blood flow, arterial oxygen saturation, and cardiac output by thermodilution (when available) at baseline and at 20-30 minutes after each incremental increase (2.5-5.0 cm H2O) in positive and expiratory pressure to a maximum of 20.0 cm H2O. If the cardiac output fell by more than 15% measurements were repeated after stepwise decreases in positive end expiratory pressure. No other manoeuvre such as endotracheal suction or changing ventilator settings, drug or fluid dosage, or the patient's position was performed for at least one hour before the start of the study or during it. SETTING--Intensive care unit. PARTICIPANTS--10 Patients being mechanically ventilated for acute respiratory failure who had stable haemodynamic and blood gas values and required a fractional inspired oxygen concentration of greater than or equal to 0.45. They were assessed on a total of 11 occasions. INTERVENTIONS--Incremental increases in positive end expiratory pressure followed when indicated by stepwise decreases. END POINT--The positive end expiratory pressure providing maximal delivery of oxygen to tissues. MEASUREMENTS and MAIN RESULTS--Arterial oxygen saturation increased with positive end expiratory pressure in all patients by an average of 6.1%. In nine of the 11 studies, however, cardiac output fell by 15% to 30% after the second increment. On the two other occasions cardiac output and oxygen delivery rose by up to 54%. Positive end expiratory pressure was decreased on seven occasions; there was considerable individual variation in the time taken for cardiac output to rise and arterial oxygen saturation to fall. In six patients good agreement was seen between the results from Doppler ultrasonography and thermodilution, the mean of the differences being -0.3% with narrow limits of agreement (-14.4% to 13.9%). CONCLUSIONS--Oesophageal Doppler ultrasonography is a rapid, safe, and reliable technique for optimising positive end expiratory pressure to obtain maximal delivery of oxygen to tissues. The results show the need to consider haemodynamic consequences when altering positive end expiratory pressure. PMID:2502250

Singer, M.; Bennett, D.

1989-01-01

237

Spondylodiscitis caused by sudden onset back pain following transrectal ultrasonography-guided prostate biopsy: a case report.  

PubMed

Spondylodiscitis is a serious and important clinical problem that can occur after iatrogenic interventions and should be kept in mind. Spondylodiscitis after transrectal ultrasonography (TRUS)-guided prostate biopsy is an extremely rare complication. A 70-year-old patient who presented with severe back pain, intermittent high fever, loss of appetite, and fatigue following TRUS-guided prostate biopsy was diagnosed with thoracic spondylodiscitis (T6-7) after clinical, laboratory and radiological assessments and he was treated surgically. We present this case to remind medical professionals to keep spondylodiscitis in mind in the presence of sudden onset back and low-back pain, since TRUS-guided prostate biopsy is a frequently used procedure. PMID:19780003

Karapolat, Hale; Akkoç, Ye?im; Arda, Bilgin; Sesli, Erhan

2009-07-01

238

Transvaginal mesh (TVM) reconstruction with TVT/TOT sling for vaginal prolapse concurrent with stress urinary incontinence.  

PubMed

We evaluated clinical efficacies of transvaginal mesh (TVM) reconstruction alone and those concomitant with a TVT/TOT sling for the treatment of pelvic organ prolapse (POP) and stress urinary incontinence (SUI). Between January 2006 and February 2007, 138 female patients with POP underwent TVM reconstruction. The mean age was 66.6 years (range: 52-84). Fourteen individuals were qualified as grade II in the POP quantification (POP-Q) system, 85 and 39 were grades III and IV, respectively. One hundred and seventeen of 138 (85 %) cases showed SUI. Twenty-one patients without SUI underwent TVM alone, and 117 cases with SUI underwent TVM concomitant with TVT/TOT sling. Mean operation time and intra-operative bleeding was 79 min (range: 25-177) and 74 ml (range: 10-429), respectively. Mean follow-up period is 5.3 months (range: 1-14). The vaginal prolapses were cured (grade 0) in 129 cases (93 %) after the surgery. Total inter-national prostate symptom score (IPSS), its QOL score, International Consultation on Incontinence Questionnaires Short Form (ICIQ-SF) significantly improved (from 12.6 to 3.9; p < 0.0001, from 5.0 to 1.0; p < 0.0001, and from 6.1 to 2.5; p < 0.01, respectively). Six of 21 cases (29%) who underwent TVM alone showed postoperative de-novo SUI. In contrast, 116 cases (99%) who underwent TVM concomitant with TVT/TOT, experienced a cure of SUI. Maximum flow rate did not change postoperatively in the both groups. In conclusion, the short-term efficacies of TVM reconstruction for POP are excellent, and a concomitant TVT/TOT sling prevents postoperative SUI. PMID:20094946

Takahashi, S; Obinata, D; Sakuma, T; Matsui, T; Takenobu, Y; Igarashi, T; Yoshizawa, T; Sato, K; Mochida, J; Sugimoto, S

2010-01-01

239

Integration of three-dimensional ultrasonography in the prenatal diagnosis of amniotic band syndrome: A case report.  

PubMed

Amniotic band syndrome is a rare disorder which is thought to be caused by early rupture of the amniotic membrane. The extent of the disease may vary from minor digital amputations to severe lethal anomalies. For many years in routine clinical practice, this syndrome has been diagnosed with two-dimensional ultrasonography. Evolving imaging techniques by means of three-dimensional ultrasonography gives the chance of early and accurate diagnosis of this devastating anomaly. By integrating three-dimensional ultrasonography to the suspected findings diagnosed in the two-dimensional ultrasonography allows us to predict possible outcomes and provides convenience in counselling. Herein we present a case of amniotic band syndrome diagnosed at 19 weeks of gestation with three-dimensional ultrasonography and pregnancy was terminated in the 20th week. Using three-dimensional ultrasonography in certain suspected foetal anomalies may provide the early diagnosis and more accurate knowledge about extent of the disease. PMID:24790518

Tur?al, Mert; Ozyüncü, Ozgür; Yaz?c?o?lu, Asl?han; Ondero?lu, Lütfü Sabri

2014-01-01

240

Endorectal ultrasonography, strain elastography and MRI differentiation of rectal adenomas and adenocarcinomas  

PubMed Central

Aim Strain elastography is a method for recording tissue hardness. Strain in different areas may be compared using strain ratio (SR). The aims of this study were to validate a previously proposed SR cut-off value of 1.25 for differentiating adenocarcinomas from adenomas and to compare the performance of endorectal ultrasonography (ERUS), strain elastography and MRI in the same patients. Method A prospective evaluation of 120 consecutive patients with rectal neoplasia, using a predetermined elastography strain ratio cut-off value, was performed to differentiate adenomas from adenocarcinomas. ERUS and MRI were performed according to standard routine at Haukeland University Hospital, defining T0 as adenomas and T1–T4 as adenocarcinomas. Subsequent histopathology was used as the reference standard. Results Histopathological evaluation revealed 21 adenomas and 99 adenocarcinomas. Sensitivity, specificity and accuracy (with 95% CI) were as follows: ERUS: 0.96 (0.90–0.99), 0.62 (0.40–0.80) and 0.90 (0.83–0.94); elastography SR: 0.96 (0.90–0.99), 0.86 (0.66–0.96) and 0.94 (0.88–0.97); and MRI: 0.99 (0.94–1.00), 0.07 (0.00–0.31) and 0.87 (0.80–0.93). Conclusion This study confirms that the elastography SR assessment accurately differentiates sessile adenomas from adenocarcinomas. SR assessment has a superior ability to differentiate adenomas and adenocarcinomas when compared with ERUS and MRI. MRI examination seems unable to recognize adenomas and should be interpreted with care when early-stage rectal neoplasia is suspected. PMID:25407010

Waage, J E R; Leh, S; Røsler, C; Pfeffer, F; Bach, S P; Havre, R F; Haldorsen, I S; Ødegaard, S; Baatrup, G

2015-01-01

241

Adding Doppler Ultrasonography to the Follow-Up of Patients with Vasospastic Disorder Improves Objectivity  

PubMed Central

Background Assessing therapeutic efficacy and patient satisfaction objectively and quantitatively has always been a problem in patients with vasospastic disorders. We aimed to present the additive value of ultrasonographic assessment of peripheral arteries secondary to cold stimulation, as a test for treatment efficacy during follow-up. Material/Methods Arterial blood flow rates were measured from radial artery with Doppler USG in patients who presented to our department with vasospastic disorders. Ultrasonography was performed at the following intervals; before cold stimulation and at 5th, 10th, 15th, 20th minutes of cold stimulation. Patients were controlled by repeat cold stimulation test and Doppler US at the 2nd month of the treatment. Results were analyzed with SPSS for Mac 20.0 package program. Results We enrolled 46 patients in the study. All patients were male and mean age was 22.3±2.17 years. Most common symptoms were cyanosis and coldness. There were statistically significant differences between pre-treatment and post-treatment arterial blood flow rates at each measurement time point (p<0.001) except initial measurement (p>0.05). On post-treatment values, there were 10.04±0.78 cm/s increase in 5th minute, 6.25±1.39 cm/s in 10th minute, 6.43±2.13 cm/s in 15th minute, and 6.38±1.86 cm/s in 20th minute measurements. All increases at the 5 time points were statistically meaningful when compared to their pre-treatment corresponding time points (p<0.001). Conclusions Doppler flowmetry added to standard cold stimulation test for evaluating the patients with vasospastic disorders provides better and more objective results when compared to the patient-oriented subjective scoring systems. PMID:25639947

Karabacak, Kubilay; Kadan, Murat; Kaya, Erkan; Erol, Gokhan; Arslan, Gokhan; Celik, Murat; Do?anci, Suat; Demirkilic, Ufuk

2015-01-01

242

Estimation of Gastrocnemius Muscle Volume Using Ultrasonography in Children with Spastic Cerebral Palsy  

PubMed Central

Purpose This study aimed to investigate useful parameters for estimating gastrocnemius (GCM) muscle volume (MV) using ultrasonography (US) and anthropometry in children with spastic cerebral palsy (CP). Materials and Methods Eighteen legs from nine children with spastic CP aged 2 to 6 years were investigated in this study. Tibial length (TL) of each leg was measured and muscle thickness (MT) and anatomical cross-sectional area (aCSA) of GCM muscles were assessed using US. The volume of the GCM was measured by magnetic resonance imaging (MRI) scans. The relationship of TL, MT, and aCSA with MV measured by MRI was investigated. Simple and multiple regression analyses were performed to establish muscle volume prediction equations. Results Resting MT, aCSA, and TL were highly related to MV of both medial and lateral head of GCM determined by MRI. The MV prediction equation based on simple regression analysis resulted in r2 values ranging from 0.591 to 0.832 (p<0.05). The r2 values were higher using aCSA as independent variable than using MT. The MV prediction equation based on multiple regression analysis resulted in r2 values ranging from 0.779 to 0.903 (p<0.05). However, the relatively high standard error of the estimate values ranged from 18.0-33.6% on simple regression and 15.5-25.6% on multiple regression. The contribution of aCSA was higher than that of MT for predicting MV of GCM. Conclusion Our study demonstrated the suitability of US assessment of aCSA and MT combined with TL for estimating MV of GCM in children with spastic CP and showed that aCSA is more useful parameter than MT. PMID:24954345

Park, Eun Sook; Sim, Eungeol; Rha, Dong-Wook

2014-01-01

243

Adding Doppler ultrasonography to the follow-up of patients with vasospastic disorder improves objectivity.  

PubMed

Background Assessing therapeutic efficacy and patient satisfaction objectively and quantitatively has always been a problem in patients with vasospastic disorders. We aimed to present the additive value of ultrasonographic assessment of peripheral arteries secondary to cold stimulation, as a test for treatment efficacy during follow-up. Material and Methods Arterial blood flow rates were measured from radial artery with Doppler USG in patients who presented to our department with vasospastic disorders. Ultrasonography was performed at the following intervals; before cold stimulation and at 5th, 10th, 15th, 20th minutes of cold stimulation. Patients were controlled by repeat cold stimulation test and Doppler US at the 2nd month of the treatment. Results were analyzed with SPSS for Mac 20.0 package program. Results We enrolled 46 patients in the study. All patients were male and mean age was 22.3±2.17 years. Most common symptoms were cyanosis and coldness. There were statistically significant differences between pre-treatment and post-treatment arterial blood flow rates at each measurement time point (p<0.001) except initial measurement (p>0.05). On post-treatment values, there were 10.04±0.78 cm/s increase in 5th minute, 6.25±1.39 cm/s in 10th minute, 6.43±2.13 cm/s in 15th minute, and 6.38±1.86 cm/s in 20th minute measurements. All increases at the 5 time points were statistically meaningful when compared to their pre-treatment corresponding time points (p<0.001). Conclusions Doppler flowmetry added to standard cold stimulation test for evaluating the patients with vasospastic disorders provides better and more objective results when compared to the patient-oriented subjective scoring systems. PMID:25639947

Karabacak, Kubilay; Kadan, Murat; Kaya, Erkan; Erol, Gokhan; Arslan, Gokhan; Celik, Murat; Do?anci, Suat; Demirkilic, Ufuk

2015-01-01

244

Ultrasonography in early pregnancy diagnosis and measurements of fetal size in reindeer (Rangifer tarandus tarandus).  

PubMed

Transrectal or transabdominal examinations of 13 pluriparous reindeer (Rangifer tarandus tarandus) by ultrasonography from the start of mating until week 20 of gestation were conducted to find out when pregnancy could first be detected and to describe fetal development in early pregnancy. The examinations (n=35 per animal) were performed with a 5 MHz linear transducer from 7th October until 1st January and with a 3 MHz sector transducer from that time until 24th February. Time of pregnancy diagnosis by ultrasonography, the first fetal heartbeat and measurements of crown-rump length, chest width and chest depth were recorded during the examinations. Pregnancy was diagnosed by transrectal ultrasonography between the weeks 3 and 7 of gestation. The accuracy of the pregnancy diagnosis, defined as the proportion of females correctly detected to be pregnant, was 15% at week 3, 46% at week 4, 77% at week 5, and 92% at week 6 of gestation. Fetal heartbeat was first detected between the weeks 5 and 8 of gestation. The first measurements of crown-rump length were made on week 3 of gestation, of chest width on week 4 and of chest depth on week 5 of gestation. Chest width and depth were detectable until the end of the study at week 20 of gestation. Transrectal ultrasonography is an efficient tool in early pregnancy diagnosis of reindeer. The fetal growth curves obtained by ultrasonography resembled those obtained in previous morphological studies. PMID:14698066

Vahtiala, Seija; Säkkinen, Hannele; Dahl, Ellen; Eloranta, Eija; Beckers, Jean-Françios; Ropstad, Erik

2004-02-01

245

Synchronization of follicular wave emergence following ultrasound-guided transvaginal follicle ablation or estradiol-17? administration in water buffalo (Bubalus bubalis).  

PubMed

The aim of this study was to assess the synchrony in follicular wave emergence and subsequent ovulation following dominant follicle ablation or estradiol-17? administration. Six cycling Murrah buffaloes were sequentially allotted to three groups, that is, control, follicular ablation, and estradiol-17? groups. For the control group, buffaloes at random stages of estrous cycle were examined daily by transrectal ultrasonography for 14 days and the day of wave emergence was recorded. Following induced luteolysis and ovulation (Day 0), these buffaloes were included in the ablation group. All follicles (>5mm) were ablated on Day 3 or 5 or 7 (n=2 each day). Seven days after the ablation, these buffaloes were administered prostaglandin F2? to induce luteolysis and ovulation. Following this, buffaloes were included in the estradiol treatment group with estradiol administered on similar days as for ablation in the ablation group. Luteolysis was induced nine days after the estradiol injection. All animals of the treatment groups were subjected to transrectal ultrasound and blood samplings daily from treatment to induced ovulation. The follicular waves emerged significantly earlier (P=0.001) in both the ablation (2.1±0.79 days) and estradiol (4.0±0.25 days) treatment groups than the control group (8.3±0.88 days). The deviation from mean day of ovulation was greater (P=0.02) for the control group buffaloes (1.66±0.3 day) than those of the treatment groups (ablation, 0.76±0.2 and estradiol, 0.58±0.2 day). In conclusion, both ablation and estradiol resulted in synchronous emergence of a new follicular wave irrespective of stage at which the treatment was given, with greater synchrony of ovulations in water buffalo. PMID:24612954

Honparkhe, M; Gandotra, V K; Matharoo, J S; Ghuman, S P S; Dadarwal, D; Singh, Jaswant

2014-04-01

246

Diagnostic accuracy of endoscopic ultrasonography for rectal neuroendocrine neoplasms  

PubMed Central

AIM: To investigate the diagnostic accuracy of endoscopic ultrasonography (EUS) for rectal neuroendocrine neoplasms (NENs) and the differential diagnosis of rectal NENs from other subepithelial lesions (SELs). METHODS: The study group consisted of 36 consecutive patients with rectal NENs histopathologically diagnosed using biopsy and/or resected specimens. The control group consisted of 31 patients with homochronous rectal non-NEN SELs confirmed by pathology. Epithelial lesions such as cancer and adenoma were excluded from this study. One EUS expert blinded to the histological results reviewed the ultrasonic images. The size, original layer, echoic intensity and homogeneity of the lesions and the perifocal structures were investigated. The single EUS diagnosis recorded by the EUS expert was compared with the histological results. RESULTS: All NENs were located at the rectum 2-10 cm from the anus and appeared as nodular (n = 12), round (n = 19) or egg-shaped (n = 5) lesions with a hypoechoic (n = 7) or intermediate (n = 29) echo pattern and a distinct border. Tumors ranged in size from 2.3 to 13.7 mm, with an average size of 6.8 mm. Homogeneous echogenicity was seen in all tumors except three. Apart from three patients (stage T2 in two and stage T3 in one), the tumors were located in the second and/or third wall layer without involvement of the fourth and fifth layers. In the patients with stage T1 disease, the tumors were located in the second wall layer only in seven cases, the third wall layer only in two cases, and both the second and third wall layers in 27 cases. Approximately 94.4% (34/36) of rectal NENs were diagnosed correctly by EUS, and 74.2% (23/31) of other rectal SELs were classified correctly as non-NENs. Eight cases of other SELs were misdiagnosed as NENs, including two cases of inflammatory lesions and one case each of gastrointestinal tumor, endometriosis, metastatic tumor, lymphoma, neurilemmoma, and hemangioma. The positive predictive value of EUS for rectal NENs was 80.9% (34/42), the negative predictive value was 92.0% (23/25), and the diagnostic accuracy was 85.1%. CONCLUSION: EUS has satisfactory diagnostic accuracy for rectal NENs with good sensitivity, but unfavorable specificity, making the differential diagnosis of NENs from other SELs challenging. PMID:25132764

Chen, Hong-Tan; Xu, Guo-Qiang; Teng, Xiao-Dong; Chen, Yi-Peng; Chen, Li-Hua; Li, You-Ming

2014-01-01

247

Collection of oocytes through transvaginal ultrasound-guided aspiration of follicles in an Indian breed of cattle.  

PubMed

The present study was undertaken in Karan Fries, an Indian breed of cattle to (1) determine the number of follicles available for puncture and (2) explore the potential of this breed as a donor of developmentally competent oocytes. Ovum pick-up (OPU) was performed using an ultrasound machine with a transvaginal convex transducer (5 MHz) with a needle guide, single lumen 19-gauge 60 cm long needle and a vacuum pressure of 90 mmHg. The number and size of follicles in each ovary was determined before puncture. The follicles were characterized on the basis of their diameter as small (3-5 mm), medium (6-9 mm) and large (>/=10 mm). The oocytes recovered were classified by quality. They were matured in vitro, irrespective of their grade, in 50 microl droplets of the in vitro maturation (IVM) medium (TCM-199+10% fetal bovine serum(FBS)+5 microg/ml follicle stimulating hormone (folltropin)+1 microg/ml estradiol-17beta+0.2 mM sodium pyruvate), covered with paraffin oil, in 35 mm petridish for 24 h in a CO(2) incubator (5% CO(2) in air) at 38.5 degrees C. The cleavage rate was recorded at day 2 post-insemination after subjecting the oocytes to in vitro fertilization (IVF). The differences in follicular populations of all size categories among individual donors were not significant. A total of 92 oocytes were recovered by aspiration of 157 follicles, with an overall recovery rate of 59% (range 35-79%). Of these, 32% were of grades A and B and the rest of grades C and D. The mean numbers of total follicles and the oocytes recovered per session did not differ significantly among individual donors. Out of the 73 oocytes subjected to IVM and IVF, 24 reached 2-4 cell stage at day 2 post-fertilization, with a cleavage rate of 33%. The total number of oocytes recovered was correlated with the number of small (R=0.54, P<0.01) but not with the number of medium and large follicles. This study demonstrates the use of OPU as a means of obtaining developmentally competent oocytes from an Indian breed of cattle for obtaining cattle oocytes in India where cow slaughter is not allowed for religious reasons. PMID:12586489

Manik, R S; Singla, S K; Palta, P

2003-04-15

248

Laparoscopic ultrasonography for uterovaginal canalization of a didelphic uterus with agenetic cervix.  

PubMed

Mullerian duct anomaly is often characterized by any of a number of disorders of the outflow tract and uterus. A 17-year-old woman suffered from cyclic lower abdominal pain for 3 years. Pelvic examination showed a small uterus with blind-ended vaginal canal about 3 cm in length. Three-dimensional pelvic ultrasonography showed a compact uterine corpus with fundal notch regarded as bicornuate uterus, and no evidence of uterine cervix. The same features were also proved by magnetic resonance imaging. Intraoperative ultrasonography showed a small uterine cavity, and uterovaginal canalization was performed. The patient had regular menses without further low abdominal pain after 6 months of follow-up. Uterovaginal canalization with the aid of intraoperative ultrasonography may be effective in managing the difficult didelphic uterus with an agenetic cervix and hypoplastic vagina. PMID:12101339

Wu, Hsien-Ming; Huang, Hong-Yuan; Lee, Chyi-Long; Soong, Yung-Kuei

2002-08-01

249

Utility of 18F-fluoro-deoxyglucose emission tomography\\/computed tomography fusion imaging (18F-FDG PET\\/CT) in combination with ultrasonography for axillary staging in primary breast cancer  

Microsoft Academic Search

BACKGROUND: Accurate evaluation of axillary lymph node (ALN) involvement is mandatory before treatment of primary breast cancer. The aim of this study is to compare preoperative diagnostic accuracy between positron emission tomography\\/computed tomography with 18F-fluorodeoxyglucose (18F-FDG PET\\/CT) and axillary ultrasonography (AUS) for detecting ALN metastasis in patients having operable breast cancer, and to assess the clinical management of axillary 18F-FDG

Shigeto Ueda; Hitoshi Tsuda; Hideki Asakawa; Jiro Omata; Kazuhiko Fukatsu; Nobuo Kondo; Tadaharu Kondo; Yukihiro Hama; Katsumi Tamura; Jiro Ishida; Yoshiyuki Abe; Hidetaka Mochizuki

2008-01-01

250

[Comparative study of duplex Doppler ultrasonography and dynamic cavernosometry by infusion in the diagnosis of arteriogenic impotence].  

PubMed

The findings of duplex doppler ultrasonography (DDU) of cavernous arteries (CA) and of dynamic infusion cavernosometry in 61 patients who underwent both diagnostic procedures were examined. Our work consisted in comparing the blood flow velocity in the CAs during the systolic peak, as measured with DDU, with the gradient CA occlusion pressure/mean brachial blood pressure and in attempting to determine whether there was a correlation between both measurements and whether patients were similarly classified by both methods. The results of each examination separately were also compared with the response to isolated injection of intracavernous drugs (ICI). Of the 61 patients, 56 were eligible for the study as 5 patients were excluded owing to a massive venous leak. A 78.6% of the patients were categorized similarly by both diagnostic methods. The correlation coefficient between both methods for the 56 evaluable patients was R = -0.756, implying a statistically significant correlation between the two measurements (p < 0.0001). The sensitivity, specificity and predictive value of a positive test as regards the response to the ICI of vasoactive drugs in both diagnostic methods showed very similar values in our sample. We conclude that both methods--the Doppler Ultrasonography and the measurement of the occlusion pressure of the cavernous arteries--are equally valid for assessing the arterial function of the cavernous bodies in erection. If we consider that the erectile function of the penis consists in storing energy in the form of pressure and that this pressure is supplied by the cavernous arteries, from a physiological point of view, it is more consistent to measure the pressure in these arteries. PMID:9019945

Moncada Iribarren, I; Jara Rascón, J; Lledó García, E; González Chamorro, F; Rodríguez Fernández, E; Hernández Fernández, C

1996-09-01

251

Efficacy of Ultrasonography Guided Stellate Ganglion Blockade in the Stroke Patients with Complex Regional Pain Syndrome  

PubMed Central

Objective To compare the efficacy of ultrasonography guided stellate ganglion block (US-SGB) with that of blind SGB in management of the stroke patients with complex regional pain syndrome (CRPS) type 1. Method Forty-two patients with post-stroke CRPS were randomly assigned to either US-guided SGB (22 patients) or blind SGB group (20 patients). The mean age of US-guided SGB and blind SGB groups was 61.3±5.6 years and 59.1±4.5 years. We performed two blockades at 7-day intervals on the affected side of patients with CRPS. Pain intensity, using a visual analog score (VAS), score of CRPS clinical severity, and the amounts of affected hand swelling with a hand volumeter were assessed before, 2 weeks and 4 weeks after treatment. Results In both groups, VAS and the amount of hand swelling were significantly decreased after 2 weeks and after 4 weeks. Between two groups, VAS difference of US-guided SGB group and that of blind SGB group were 2.61±1.09, 1.88±0.62 at 2 weeks and 3.67±1.03, 3.13±0.62 at 4 weeks, respectively. US-guided SGB group showed more significant improvement in mean change of VAS compared to the blind SGB group (p-value<0.05). Conclusion Both US-guided SGB and blind SGB techniques were effective in relieving pain in subacute stroke patients with CRPS. US-guided SGB was better in pain relief but has no advantages in reduction of hand swelling in this study. PMID:23185727

Yoo, Seung Don; Kim, Hee-Sang; Yun, Dong Hwan; Kim, Dong Hwan; Chon, Jinmann; Hong, Dong Whan

2012-01-01

252

Ultrasonography and color Doppler of proximal gluteal enthesitis in juvenile idiopathic arthritis: a descriptive study  

PubMed Central

Background The presence of enthesitis (insertional inflammation) in patients with juvenile idiopathic arthritis (JIA) is difficult to establish clinically and may influence classification and treatment of the disease. We used ultrasonography (US) and color Doppler (CD) imaging to detect enthesitis at the small and deep-seated proximal insertion of the gluteus medius fascia on the posterior iliac crest where clinical diagnosis is difficult. The findings in JIA patients were compared with those obtained in healthy controls and with the patients' MRI results. Methods Seventy-six proximal gluteus medius insertions were studied clinically (tenderness to palpation of the posterior iliac crest) and by US and CD (echogenicity, thickness, hyperemia) in 38 patients with JIA and in 38 healthy controls, respectively (median age 13 years, range 7-18 years). In addition, an additional MRI examination of the sacroiliac joints and iliac crests was performed in all patients. Results In patients with focal, palpable tenderness, US detected decreased echogenicity of the entheses in 53% of the iliac crests (bilateral in 37% and unilateral in 32%). US also revealed significantly thicker entheses in JIA patients compared to healthy controls (p < 0.003 left side, p < 0.001 right side). There was no significant difference in thickness between the left and right sides in individual subjects. Hyperemia was detected by CD in 37% (28/76) of the iliac crests and by contrast-enhanced MRI in 12% (6/50). Conclusions According to US, the gluteus medius insertion was thicker in JIA patients than in controls, and it was hypoechoic (enthesitis) in about half of the patients. These findings may represent chronic, inactive disease in some of the patients, because there was only limited Doppler flow and MRI contrast enhancement. The present study indicates that US can be useful as an adjunct to clinical examination for improved assessment of enthesitis in JIA. This may influence disease classification, ambition to treat, and choice of treatment regimen. PMID:21835006

2011-01-01

253

Routine trans-abdominal ultrasonography before laparoscopic sleeve gastrectomy: the findings.  

PubMed

Although some bariatric guidelines reserve pre-operative trans-abdominal ultrasonography screening for symptomatic patients and those with elevated liver enzymes, there has yet to exist a general consensus regarding this issue. Some centers still employ its use as a vital step in the workup of the bariatric patient. This study aims to observe the prevalent findings on routine pre-operative trans-abdominal ultrasonography when used as a screening tool prior to laparoscopic sleeve gastrectomy (LSG). All patients undergoing LSG were screened pre-operatively with trans-abdominal ultrasonography. A retrospective study was done of the pre-operative ultrasonography results of patients who underwent LSG at Amiri Hospital from 2008 to 2012. A total of 747 patients were included in the study, with a median age of 36 (15-68). Five hundred ninety (79.0 %) patients were females while 157 (21.0 %) were males, with an overall median body mass index (BMI) of 45 (30-90). Two hundred forty patients (32.1 %) had normal pre-operative ultrasonography results, 83 (11.1 %) were found to have gallstones, 427 (57.2 %) had fatty liver, and 55 (7.4 %) had other pathologies. There was no statistically significant association between BMI and gallstones (p?=?0.545) and BMI and fatty liver (p?=?0.418). Trans-abdominal ultrasonography screening prior to LSG revealed a wide range of findings but does not add significant information to the pre-operative workup of patients undergoing the procedure and should be reserved for indicated patients. PMID:24101090

Almazeedi, Sulaiman; Al-Sabah, Salman; Alshammari, Dheidan

2014-03-01

254

Efficacy of contrast-enhanced ultrasonography in detecting graft rupture sites after abdominal aortic aneurysm repair.  

PubMed

Non-anastomotic graft rupture is a rare but critical complication after abdominal aortic aneurysm (AAA) repair. Therefore, identifying the rupture sites is important to perform endovascular stent grafting. A 78-year old man who had undergone Y-grafting for infrarenal AAA before 17 years was referred to our hospital with the complaints of abdominal pain. Computed tomography revealed acute pancreatitis and an enlargement around the grafted abdominal aorta. Contrast-enhanced ultrasonography revealed an extravazation from the graft body 1.5 cm distal to the proximal anastomosis, and endovascular stent grafting was successfully performed. Contrast-enhanced ultrasonography might be useful in detecting the graft rupture. PMID:24218495

Nakanishi, Koji; Watanabe, Ryoji; Shimizu, Shuji; Nakai, Mikizo

2014-02-01

255

Current status and perspective of endoscopic ultrasonography-guided gastrojejunostomy: endoscopic ultrasonography-guided double-balloon-occluded gastrojejunostomy (with videos).  

PubMed

Surgical intervention and, more recently, endoscopic intervention have been performed for the treatment of malignant gastric outlet obstruction. Recently, endoscopic ultrasonography (EUS)-guided gastrojejunostomy using special devices has been established. In line with this, we have developed a novel EUS-guided double-balloon-occluded gastrojejunostomy (EBOG) using a lumen-apposing biflanged metal stent. Herein, we describe the technique and outcome of EBOG. PMID:25155270

Itoi, Takao; Ishii, Kentaro; Tanaka, Reina; Umeda, Junko; Tonozuka, Ryosuke

2015-01-01

256

Transcranial Doppler Ultrasonography Monitoring of Cerebral Hemodynamics During Performance of Cognitive Tasks: A Review  

Microsoft Academic Search

The examination of blood flow velocity (BFV) changes during the performance of mental tasks is one of the applications of transcranial Doppler (TCD) ultrasonography. The purpose of this review is to summarize the results of the functional TCD literature, to investigate the effects of methodological differences between studies, and to provide guidelines for future research. It is concluded that larger

Nathalie Stroobant; Guy Vingerhoets

2000-01-01

257

A prospective trial of computed tomography and ultrasonography for diagnosing appendicitis in the atypical patient  

Microsoft Academic Search

Background: The surgical diagnosis of acute appendicitis is customarily made on clinical grounds alone using history, physical examination, and white blood cell count. In the atypical patient, ie, the patient with prolonged symptoms, inconsistent history, or misleading physical examination, diagnostic studies should be helpful in establishing the appropriate diagnosis. Computed tomography (CT) scan and ultrasonography (US) have demonstrated utility in

Marc D Horton; Steven F Counter; Michael G Florence; Michael J Hart

2000-01-01

258

Duplex ultrasonography scanning for chronic venous disease: Patterns of venous reflux  

Microsoft Academic Search

Purpose: Patterns of flow in superficial and deep veins and outward flow in medial calf perforators were studied by duplex ultrasonography scanning in 1653 lower limbs in 1114 consecutive patients. This study compares results in 776 limbs with primary uncomplicated varicose veins with those in 166 limbs with the complications of lipodermatosclerosis or past venous ulceration.Methods: Duplex scanning determined whether

Kenneth A. Myers; Robert W. Ziegenbein; Ge Hua Zeng; P. Geoffrey Matthews

1995-01-01

259

Quantitative Lingual, Pharyngeal and Laryngeal Ultrasonography in Swallowing Research: A Technical Review  

ERIC Educational Resources Information Center

Because of its distinct advantage in radiation-free soft tissue imaging, ultrasonography has been widely used to study lingual, pharyngeal, hyoid, laryngeal, and even esophageal action during swallowing in individuals of all ages. Qualitative ultrasonographic observations have made considerable contributions to our understanding of deglutition.…

Chi-Fishman, Gloria

2005-01-01

260

Abdominal Visceral Fat Thickness Measured by Ultrasonography Predicts the Presence and Severity of Coronary Artery Disease  

Microsoft Academic Search

Abdominal visceral fat plays a critical role in the pathogenesis of metabolic syndrome, which is a risk factor for coronary artery disease (CAD). Ultrasonography (US) distinctively quantifies visceral fat and subcutaneous fat. We measured the maximum preperitoneal visceral fat thickness (Vmax) and the minimum subcutaneous fat thickness (Smin) by US in 185 patients who underwent coronary angiography. Although the 144

Kosuke Hamagawa; Yoshihisa Matsumura; Toru Kubo; Kayo Hayato; Makoto Okawa; Katsutoshi Tanioka; Naohito Yamasaki; Hiroaki Kitaoka; Toshikazu Yabe; Masanori Nishinaga; Yoshinori L. Doi

2010-01-01

261

Application of Intraoperative Ultrasonography for Guiding Microneurosurgical Resection of Small Subcortical Lesions  

PubMed Central

Objective We wanted to evaluate the clinical value of intraoperative ultrasonography for real-time guidance when performing microneurosurgical resection of small subcortical lesions. Materials and Methods Fifty-two patients with small subcortical lesions were involved in this study. The pathological diagnoses were cavernous hemangioma in 25 cases, cerebral glioma in eight cases, abscess in eight cases, small inflammatory lesion in five cases, brain parasite infection in four cases and the presence of an intracranial foreign body in two cases. An ultrasonic probe was sterilized and lightly placed on the surface of the brain during the operation. The location, extent, characteristics and adjacent tissue of the lesion were observed by high frequency ultrasonography during the operation. Results All the lesions were located in the cortex and their mean size was 1.3 ± 0.2 cm. Intraoperative ultrasonography accurately located all the small subcortical lesions, and so the neurosurgeon could provide appropriate treatment. Different lesion pathologies presented with different ultrasonic appearances. Cavernous hemangioma exhibited irregular shapes with distinct margins and it was mildly hyperechoic or hyperechoic. The majority of the cerebral gliomas displayed irregular shapes with indistinct margins, and they often showed cystic and solid mixed echoes. Postoperative imaging identified that the lesions had completely disappeared, and the original symptoms of all the patients were significantly alleviated. Conclusion Intraoperative ultrasonography can help accurately locate small subcortical lesions and it is helpful for selecting the proper approach and guiding thorough resection of these lesions. PMID:21927554

Wang, Jia; Liu, Xi; Wang, Yu; Gao, Guo Dong; Qin, Huai Zhou; Wang, Liang

2011-01-01

262

Correlation between power Doppler ultrasonography and clinical severity in Achilles tendinopathy  

Microsoft Academic Search

Twenty-five patients with chronic Achilles tendinopathy were clinically and ultrasonographically evaluated. A positive correlation existed between power Doppler ultrasonography (PDU) and tendon thickness (r=0.63, pr=0.40, pr=?0.57, pr=?0.46, p

Koen H. E. Peers; Peter P. M. Brys; Roeland J. J. Lysens

2003-01-01

263

Striated pattern on scrotal ultrasonography: A marker for Non-hodgkins lymphoma of testis.  

PubMed

We present a case of 52 year old man who presented with bilateral painless testicular swelling. On evaluation with high resolution ultrasonography of the scrotum, typical "striated pattern" which is highly suggestive of Non Hodgkins lymphoma of the testis was seen. The patient underwent bilateral inguinal orchidectomy and the histopathological examination confirmed the diagnosis of Non Hodgkins lymphoma. PMID:24497696

Bhat, Suresh; Sachin, Joseph; Ramaprasad; Job, Suma

2014-01-01

264

Striated pattern on scrotal ultrasonography: A marker for Non-hodgkins lymphoma of testis  

PubMed Central

We present a case of 52 year old man who presented with bilateral painless testicular swelling. On evaluation with high resolution ultrasonography of the scrotum, typical “striated pattern” which is highly suggestive of Non Hodgkins lymphoma of the testis was seen. The patient underwent bilateral inguinal orchidectomy and the histopathological examination confirmed the diagnosis of Non Hodgkins lymphoma. PMID:24497696

Bhat, Suresh; Sachin, Joseph; Ramaprasad; Job, Suma

2014-01-01

265

Intraoperative ultrasonography of the portal vein during attenuation of intrahepatic portocaval shunts in dogs.  

PubMed

A method for intraoperative measurement of portal blood flow velocity with duplex Doppler ultrasonography in 7 dogs with congenital intrahepatic portosystemic shunts is described. The aims of the study were to determine whether intraoperative ultrasonography was an acceptable alternative to mesenteric portography in such dogs and to identify quantitative portal hemodynamic variables that might correlate with clinical outcome better than portal pressure does. Ultrasonographic measurements did not influence decision-making by the surgeon, who attenuated the shunt on the basis of appearance of the viscera and change in mean systemic arterial blood pressure. All dogs recovered without complications, and surgery was considered to be successful in all 7. Intraoperative B-mode ultrasonography provided real-time information about the anatomy of the shunt and the portal branches, suggesting that it may be a useful alternative to mesenteric portography. The time-averaged mean portal blood velocity ranged from 6.5 to 33.7 cm/s before shunt attenuation and from 5.0 to 9.5 cm/s after shunt attenuation. This narrow range of postligation velocities suggested that intraoperative ultrasonography might be an alternative to intraoperative portal pressure measurement. PMID:12710771

Szatmári, Viktor; van Sluijs, Frederik J; Rothuizen, Jan; Voorhout, George

2003-04-15

266

Duplex Ultrasonography for the Detection of Deep Vein Thrombi After Total Hip or Knee Arthroplasty  

Microsoft Academic Search

The usefulness of real-time duplex ultrasonography (DU) as a screening test for deep vein thrombosis (DVT) in high-risk patients remains uncertain. To determine the sensitivity and specificity of DU for the detection of DVT, the authors prospectively studied 178 consecutive patients after total hip (n=113) or total knee (n = 66) arthroplasty. The deep veins from the inguinal ligament to

C. Gregory Elliott; Mary Suchyta; Steven C. Rose; Steve Talbot; Clynn Ford; Gary Raskob; Russell Hull; Bruce Davidson

1993-01-01

267

Undergraduate Student Perceptions of the Use of Ultrasonography in the Study of "Living Anatomy"  

ERIC Educational Resources Information Center

Ultrasonography is a noninvasive imaging modality, and modern ultrasound machines are portable, inexpensive (relative to other imaging modalities), and user friendly. The aim of this study was to explore student perceptions of the use of ultrasound to teach "living anatomy". A module utilizing transthoracic echocardiography was developed and…

Ivanusic, Jason; Cowie, Brian; Barrington, Michael

2010-01-01

268

Transperineal 125iodine seed implantation in prostatic cancer guided by transrectal ultrasonography  

Microsoft Academic Search

A new method is described for precise transperineal insertion of radioactive 125iodine seeds in patients with prostatic cancer. The procedure is done under transrectal ultrasonography guidance using a special multichannel puncture attachment and a simple, efficient insertion technique. The advantages of the method are 1) the patients are spared the inconvenience and risk of an operation, 2) improved dose calculations

Harry W. Herr; N JUUL; J PEDERSEN; H HANSEN; I STROYER

2002-01-01

269

Effects of sildenafil on ocular perfusion demonstrated by color Doppler ultrasonography  

Microsoft Academic Search

The aim of this study was to investigate the effects of sildenafil on ocular hemodynamics by color Doppler ultrasonography (CDU). In all, 38 patients with erectile dysfunction diagnosed by International Index of Erectile Function (IIEF) and Sexual Health Inventory of Men (SHIM) scores were included into the study. After taking 100 mg of oral sildenafil citrate, all patients underwent CDU

E Kurtulan; A Gulcu; M Secil; I Celebi; G Aslan; A A Esen

2004-01-01

270

GnRH analogue treatment on LH surge day 0 followed by single transvaginal artificial insemination with frozen semen on day 5 in bitches.  

PubMed

Reproductive parameters were evaluated in 19 and 14 estrous beagles that received 100 µg of gonadotropin-releasing hormone (GnRH) and saline treatment, respectively, on the day of luteinizing hormone (LH) surge (Day 0; estimated by serial progesterone assay) and balloon catheter-aided single transvaginal artificial insemination of frozen semen on Day 5. Although the conception rate and litter size were similar between the GnRH and saline groups, the concentration of LH peak was significantly higher in GnRH-treated bitches (P<0.01). In addition, the actual LH surge did not occur on the estimated Day 0 in one saline-treated bitch. In clinical practice that daily progesterone assay is difficult, administration of GnRH on estimated Day 0 would be recommended to induce or enhance the LH surge for timely and successful insemination. PMID:25311914

Ohtaki, Tadatoshi; Koga, Yasuna; Ono, Mamiko; Watanabe, Gen; Taya, Kazuyoshi; Tsumagari, Shigehisa

2014-10-10

271

The Efficacy of Magnetic Resonance Imaging and Color Doppler Ultrasonography in Diagnosis of Salivary Gland Tumors  

PubMed Central

Background and aims. Although salivary gland tumors are not very common, early diagnosis and treatment is crucial because of their proximity to vital organs, and therefore, determining the efficacy of new imaging procedures becomes important. This study aimed to evaluate the efficacy of magnetic resonance imaging (MRI) and color doppler ultrasonography parameters in the diagnosis and differentiation of benign and malignant salivary gland tumors. Materials and methods. In this cross-sectional study, color doppler ultrasonography and MRI were performed for 22 patients with salivary gland tumor. Demographic data as well as MRI, color doppler ultrasonography, and surgical parameters including tumor site, signal in MRI images, ultrasound echo, tumor border, lymphadenopathy, invasion, perfusion, vascular resistance index (RI), vascular pulse index (PI) were analyzed using Chi-square test, Fisher's exact test, and independent t-test. Results. The mean age of patients was 46.59±13.97 years (8 males and 14females). Patients with malignant tumors were older (P < 0.01). The most common tumors were pleomorphic adenoma (36.4%), metastasis (36.4%), and mucoepidermoid carcinoma (9%). Nine tumors (40.9%) were benign and 13 (59.1%) were malignant. The overall accuracy of MRI and color doppler ultrasonography in determining tumor site was 100% and 95%, respectively. No significant difference observed between RI and PI and the diagnosis of tumor. Conclusion. Both MRI and ultrasonography have high accuracy in the localization of tumors. Well-identified border was a sign of benign tumors. Also, invasion to adjacent structures was a predictive factor for malignancy. PMID:25587388

Davachi, Behrooz; Imanimoghaddam, Mahrokh; Majidi, Mohamad Reza; Sahebalam, Ahmad; Johari, Masoomeh; Javadian Langaroodi, Adineh; Shakeri, Mohamad Taghi

2014-01-01

272

Accuracy of Ultrasonography and Magnetic Resonance Imaging in the Diagnosis of Placenta Accreta  

PubMed Central

Purpose To evaluate the accuracy of ultrasonography and magnetic resonance imaging (MRI) in the diagnosis of placenta accreta and to define the most relevant specific ultrasound and MRI features that may predict placental invasion. Material and Methods This study was approved by the institutional review board of the French College of Obstetricians and Gynecologists. We retrospectively reviewed the medical records of all patients referred for suspected placenta accreta to two university hospitals from 01/2001 to 05/2012. Our study population included 42 pregnant women who had been investigated by both ultrasonography and MRI. Ultrasound images and MRI were blindly reassessed for each case by 2 raters in order to score features that predict abnormal placental invasion. Results Sensitivity in the diagnosis of placenta accreta was 100% with ultrasound and 76.9% for MRI (P?=?0.03). Specificity was 37.5% with ultrasonography and 50% for MRI (P?=?0.6). The features of greatest sensitivity on ultrasonography were intraplacental lacunae and loss of the normal retroplacental clear space. Increased vascularization in the uterine serosa-bladder wall interface and vascularization perpendicular to the uterine wall had the best positive predictive value (92%). At MRI, uterine bulging had the best positive predictive value (85%) and its combination with the presence of dark intraplacental bands on T2-weighted images improved the predictive value to 90%. Conclusion Ultrasound imaging is the mainstay of screening for placenta accreta. MRI appears to be complementary to ultrasonography, especially when there are few ultrasound signs. PMID:24733409

Riteau, Anne-Sophie; Tassin, Mikael; Chambon, Guillemette; Le Vaillant, Claudine; de Laveaucoupet, Jocelyne; Quéré, Marie-Pierre; Joubert, Madeleine; Prevot, Sophie; Philippe, Henri-Jean; Benachi, Alexandra

2014-01-01

273

The efficacy of magnetic resonance imaging and color Doppler ultrasonography in diagnosis of salivary gland tumors.  

PubMed

Background and aims. Although salivary gland tumors are not very common, early diagnosis and treatment is crucial because of their proximity to vital organs, and therefore, determining the efficacy of new imaging procedures becomes important. This study aimed to evaluate the efficacy of magnetic resonance imaging (MRI) and color doppler ultrasonography parameters in the diagnosis and differentiation of benign and malignant salivary gland tumors. Materials and methods. In this cross-sectional study, color doppler ultrasonography and MRI were performed for 22 patients with salivary gland tumor. Demographic data as well as MRI, color doppler ultrasonography, and surgical parameters including tumor site, signal in MRI images, ultrasound echo, tumor border, lymphadenopathy, invasion, perfusion, vascular resistance index (RI), vascular pulse index (PI) were analyzed using Chi-square test, Fisher's exact test, and independent t-test. Results. The mean age of patients was 46.59±13.97 years (8 males and 14females). Patients with malignant tumors were older (P < 0.01). The most common tumors were pleomorphic adenoma (36.4%), metastasis (36.4%), and mucoepidermoid carcinoma (9%). Nine tumors (40.9%) were benign and 13 (59.1%) were malignant. The overall accuracy of MRI and color doppler ultrasonography in determining tumor site was 100% and 95%, respectively. No significant difference observed between RI and PI and the diagnosis of tumor. Conclusion. Both MRI and ultrasonography have high accuracy in the localization of tumors. Well-identified border was a sign of benign tumors. Also, invasion to adjacent structures was a predictive factor for malignancy. PMID:25587388

Davachi, Behrooz; Imanimoghaddam, Mahrokh; Majidi, Mohamad Reza; Sahebalam, Ahmad; Johari, Masoomeh; Javadian Langaroodi, Adineh; Shakeri, Mohamad Taghi

2014-01-01

274

Time-Intensity Curve Parameters in Rectal Cancer Measured Using Endorectal Ultrasonography with Sterile Coupling Gels Filling the Rectum: Correlations with Tumor Angiogenesis and Clinicopathological Features  

PubMed Central

The primary aim of this study was to investigate the relationship between contrast-enhanced ultrasonography (CEUS) imaging parameters and clinicopathological features of rectal carcinoma and assess their potential as new radiological prognostic predictors. A total of 66 rectal carcinoma patients were analyzed with the time-intensity curve of CEUS. The parameter arrival time (AT), time to peak enhancement (TTP), wash-in time (WIT), enhanced intensity (EI), and ascending slope (AS) were measured. Microvessel density (MVD) was evaluated by immunohistochemical staining of surgical specimens. All findings were analysed prospectively and correlated with tumor staging, histological grading, and MVD. The mean values of AT, TTP, WIT, EI, and AS value of the rectal carcinoma were 10.84 ± 3.28?s, 20.61 ± 5.52?s, 9.78 ± 2.83?s, 28.68 ± 4.67?dB, and 3.20 ± 1.10, respectively. A positive linear correlation was found between the EI and MVD in rectal carcinoma (r = 0.295, P = 0.016), and there was a significant difference for EI among histological grading (r = ?0.264, P = 0.007). EI decreased as T stage increased with a trend of association noted (P = 0.096). EI of contrast enhanced endorectal ultrasonography provides noninvasive biomarker of tumor angiogenesis in rectal cancer. CEUS data have the potential to predict patient prognosis. PMID:24900973

Wang, Yong; Wang, Yi-Xiang J.; Cui, Ning-Yi; Zou, Shuang-Mei; Zhou, Chun-Wu; Jiang, Yu-Xin

2014-01-01

275

Effects of noradrenaline and adenosine triphosphate on the degree on contrast enhancement in a rabbit model of atherosclerosis during contrast-enhanced ultrasonography.  

PubMed

The aim of the study is to assess the effects of vasoactive agents on the degree of contrast enhancement in experimental atherosclerotic plaque during contrast-enhanced ultrasonography (CEUS). Abdominal aortic atherosclerosis was induced in 25 New Zealand white rabbits by a combination of cholesterol-rich diet and balloon endothelial denudation. Standard ultrasonography and CEUS were performed at baseline and during intravenous infusion of noradrenaline or adenosine triphosphate (ATP). The degree of contrast enhancement of the plaque after injection of contrast material was quantified by calculating the enhanced intensity in the plaque. The infusion of noradrenaline induced significant increase in systolic blood pressure (84 ± 13 mm Hg vs. 112 ± 20 mm Hg, p = 0.011) and significant decrease in the enhanced intensity in the plaque (7.52 ± 1.32 dB vs. 5.88 ± 1.33 dB, p < 0.001) during CEUS. The infusion of ATP resulted in the significant decrease in systolic blood pressure (80 ± 13 mm Hg vs. 65 ± 11 mm Hg, p = 0.005) and increase in the enhanced intensity in the plaque (7.52 ± 1.32 dB vs. 8.84 ± 1.55 dB, p < 0.001) during CEUS. The degree of contrast enhancement within an experimental atherosclerotic plaque during CEUS can be influenced by vasoactive agents and hemodynamic status. PMID:25218451

Sun, Jie; Deng, You-Bin; Liu, Kun; Wang, Yu-Bo

2014-11-01

276

A systematic approach to use the multiplanar display in the evaluation of abnormal vascular connections to the fetal heart using 4D ultrasonography: A pictorial essay  

PubMed Central

Objective The multiplanar display is a modality that allows the simultaneous visualization of three orthogonal planes from volume datasets obtained with three- (3D) and four-dimensional (4D) ultrasonography. Simultaneous display of standard views used in fetal echocardiography and their orthogonal planes may provide novel sonographic views for examination of the fetal heart and its vascular connections. This study was designed to determine the clinical utility of the multiplanar display in the examination of abnormal vascular connections to the fetal heart. Methods We reviewed four-dimensional volume datasets, acquired with the spatiotemporal image correlation technique (STIC), from patients with abnormal vascular connections to the fetal heart. Multiplanar views of the fetal heart were used to simultaneously display standard planes used in fetal echocardiography and their corresponding orthogonal planes. Results This study included four volume datasets from fetuses with confirmed abnormal vascular connections to the heart including: 1) interrupted inferior vena cava with azygos or hemiazygos vein continuation; 2) persistent left superior vena cava draining into a dilated coronary sinus; and 3) a dilated superior vena cava associated to a thoracic lymphangioma. Simultaneous visualization of orthogonal planes displaying abnormal vascular connections to the fetal heart facilitated the identification of the abnormal vessels and their spatial relationships with other vascular structures. Conclusion Multiplanar imaging can be used to assess abnormal vascular connections to the fetal heart and may provide novel sonographic planes for fetal echocardiography using 3D and 4D ultrasonography. PMID:17957040

Espinoza, Jimmy; Hassan, Sonia S; Gotsch, Francesca; Kusanovic, Juan Pedro; Lee, Wesley; Erez, Offer; Gonçalves, Luis F.; Schoen, Mary Lou; Romero, Roberto

2008-01-01

277

Hepatic perfusion parameters of contrast-enhanced ultrasonography correlate with the severity of chronic liver disease.  

PubMed

In the study described here, we introduced a new ratio acquired with contrast-enhanced ultrasonography (CEUS): a liver parenchyma blood supply ratio that differentiates arterial and portal phases. Our purpose was to determine whether this ratio and other liver parenchyma perfusion parameters acquired with CEUS can be correlated with the severity of chronic liver disease. Twelve patients with non-cirrhotic chronic liver disease, 35 patients with cirrhosis (child class A: n = 10; child class B: n = 13; child class C: n = 12) and 21 healthy volunteers were examined by CEUS. Time-intensity curves were drawn for regions of interest located in liver parenchyma and right kidney cortex using QLAB quantification software. The arterial and portal phases were differentiated by the time to the maximum enhancement of right kidney and liver parenchyma perfusion data acquired from the time-intensity curves: the intensity of liver parenchyma perfused by hepatic arterial flow (I(ap)), the intensity of total perfusion of liver parenchyma (I(peak)), the intensity of liver parenchyma perfused by portal venous flow (I(pp)) and the ratio of portal perfusion to total perfusion of liver parenchyma expressed by the parameters I(pp)/I(peak), I(peak), I(pp) and I(pp)/I(peak) significantly decreased in patients with cirrhosis and in patients with non-cirrhotic chronic liver disease, whereas Iap increased. The parameters I(pp), I(peak), I(pp)/I(peak) and Iap correlated with the severity of chronic liver disease (r = -0.938, p < 0.001; r = -0.790, p < 0.001; r = -0.931 p < 0.001; r = 0.31, p < 0.05). The diagnostic accuracy rates for cirrhosis expressed as areas under receiver operating characteristic curves were 0.93 for I(peak), 0.98 for I(pp), 0.98 for I(pp)/I(peak), and 0.69 for I(ap). Liver parenchyma perfusion parameters obtained by CEUS were correlated with the severity of chronic liver disease and have the potential to assess cirrhosis non-invasively. PMID:25218453

Liu, Dong; Qian, Linxue; Wang, Jinrui; Hu, Xiangdong; Qiu, Lanyan

2014-11-01

278

Endoscopic ultrasonography can diagnose distal biliary strictures without a mass on computed tomography  

PubMed Central

AIM: To assess the diagnostic ability of endoscopic ultrasonography (EUS) for evaluating causes of distal biliary strictures shown on endoscopic retrograde cholangiopancreatography (ERCP) or magnetic resonance cholangiopancreatography (MRCP), even without identifiable mass on computed tomography (CT). METHODS: The diagnostic ability of EUS was retrospectively analyzed and compared with that of routine cytology (RC) and tumor markers in 34 patients with distal biliary strictures detected by ERCP or MRCP at Dokkyo Medical School Hospital from December 2005 to December 2008, without any adjacent mass or eccentric thickening of the bile duct on CT that could cause biliary strictures. Findings considered as benign strictures on EUS included preservation of the normal sonographic layers of the bile duct wall, irrespective of the presence of a mass lesion. Other strictures were considered malignant. Final diagnosis of underlying diseases was made by pathological examination in 18 cases after surgical removal of the samples, and by clinical follow-up for > 10 mo in 16 cases. RESULTS: Seventeen patients (50%) were finally diagnosed with benign conditions, including 6 “normal” subjects, while 17 patients (50%) were diagnosed with malignant disease. In terms of diagnostic ability, EUS showed 94.1% sensitivity, 82.3% specificity, 84.2% positive predictive value, 93.3% negative predictive value (NPV) and 88.2% accuracy for identifying malignant and benign strictures. EUS was more sensitive than RC (94.1% vs 62.5%, P = 0.039). NPV was also better for EUS than for RC (93.3% vs 57.5%, P = 0.035). In addition, EUS provided significantly higher sensitivity than tumor markers using 100 U/mL as the cutoff level of carbohydrate antigen 19-9 (94.1% vs 53%, P = 0.017). On EUS, biliary stricture that was finally diagnosed as malignant showed as a hypoechoic, irregular mass, with obstruction of the biliary duct and invasion to surrounding tissues. CONCLUSION: EUS can diagnose biliary strictures caused by malignant tumors that are undetectable on CT. Earlier detection by EUS would provide more therapeutic options for patients with early-stage pancreaticobiliary cancer. PMID:20066744

Saifuku, Yasuyuki; Yamagata, Michiko; Koike, Takero; Hitomi, Genyo; Kanke, Kazunari; Watanabe, Hidetaka; Murohisa, Toshimitsu; Tamano, Masaya; Iijima, Makoto; Kubota, Keiichi; Hiraishi, Hideyuki

2010-01-01

279

Fast and Accurate Ultrasonography for Visceral Fat Measurement  

Microsoft Academic Search

\\u000a Visceral fat area (VFA) has close relationship with hypertension, diabetes and cardiovascular disease, and therefore serve\\u000a as a reliable indicator of these diseases. Abdominal computed tomography (CT) enables precise quantification of the VFA and\\u000a has been considered as the gold standard for VFA assessment. In this paper, we develope a novel method to quickly and accurately\\u000a measure the VFA with

You Zhou; Norihiro Koizumi; Naoto Kubota; Takaharu Asano; Kazuhito Yuhashi; Takashi Mochizuki; Takashi Kadowaki; Ichiro Sakuma; Hongen Liao

2010-01-01

280

The role of ultrasonography for diagnosis the renal masses in children. Pictorial essay.  

PubMed

In children abdominal masses usually arises from the kidney and urinary tract. The reasons for patient's presentation may be abdominal pain, palpable abdominal mass (usually discovered during the physical exam) and hematuria. Ultrasonography should be the first imaging investigation performed in children with an abdominal mass. It can be performed safely regardless of the clinical status of the patient, it is noninvasive and painless, requires no radiological contrast media and it is a relatively inexpensive. Ultrasonography is usually able to give an accurate localization of the lesion to a specific area or organ of the abdomen and provides good differentiation of solid from fluid or blood-filled masses. The purpose of this pictorial essay is to demonstrate the ultrasonographic features of the most frequently encountered reno-urinary masses in children. PMID:21390345

Fufezan, Otilia; Asavoaie, Carmen; Blag, Cristina; Popa, Gheorge

2011-03-01

281

Diagnosis of a sigmoid volvulus in pregnancy: ultrasonography and magnetic resonance imaging findings  

PubMed Central

Sigmoid volvulus complicating pregnancy is a rare, non-obstetric cause of abdominal pain that requires prompt surgical intervention (decompression) to avoid intestinal ischemia and perforation. We report the case of a 31-week pregnant woman with abdominal pain and subsequent development of constipation. Preoperative diagnosis was achieved using magnetic resonance imaging and ultrasonography: the large bowel distension and a typical whirl sign - near a sigmoid colon transition point - suggested the diagnosis of sigmoid volvulus. The decision to refer the patient for emergency laparotomy was adopted without any ionizing radiation exposure, and the pre-operative diagnosis was confirmed after surgery. Imaging features of sigmoid volvulus and differential diagnosis from other non-obstetric abdominal emergencies in pregnancy are discussed in our report, with special emphasis on the diagnostic capabilities of ultrasonography and magnetic resonance imaging. PMID:24967020

Palmucci, Stefano; Lanza, Maria Letizia; Gulino, Fabrizio; Scilletta, Beniamino; Ettorre, Giovanni Carlo

2014-01-01

282

Basic principles and current applications of lung ultrasonography in the intensive care unit.  

PubMed

Until recently, the sonographic visualization of pulmonary and pleural diseases was considered a poorly accessible method, due to the inability of sound to penetrate air-filled lung. Despite its limitations, lung ultrasonography is becoming an important diagnostic tool in a growing number of pathological situations such as pneumonia, atelectasis, interstitial-alveolar syndrome, pulmonary embolism, pneumothorax and pleural effusion. The low sensitivity of CXR and the difficulties of performing CT make this technique invaluable for bedside use in the intensive care unit. Lung ultrasonography is an easily repeatable and radiation-free technique, and therefore, an attractive imaging tool for use on a daily basis, especially in the management of critically ill patients. PMID:20969673

Stefanidis, Konstantinos; Dimopoulos, Stavros; Nanas, Serafim

2011-02-01

283

A comparison of rectal palpation and ultrasonography for the evaluation of superovulatory response in beef heifers.  

PubMed

The superovulatory response was followed up in 14 beef heifers by rectal palpation and by ultrasonographic examinations of the 28 ovaries, on day 7 after superovulation induced with PMSG (ovulation = day 0). Using a B-mode ultrasound instrument (Aloka Echo Camera SSD-210-DX II) equipped with a 5 MHz linear transrectal transducer, ultrasonography was found to be more reliable than rectal palpation. A significantly higher number of follicles (P < or = 0.049) was identified by ultrasound scanning than by rectal palpation of the ovaries: follicles were more easily differentiated from cysts using ultrasonography, since each fluid-filled vesicle was accurately measured on the screen and presented on the echogram. PMID:9141283

Makek, Z; Herak, M; Cergolj, M; Barac-Getz, I; Rudan, D

1996-01-01

284

Imaging in chronic achilles tendinopathy: a comparison of ultrasonography, magnetic resonance imaging and surgical findings in 27 histologically verified cases  

Microsoft Academic Search

Objective. To compare information gained by ultrasonography and magnetic resonance imaging (MRI) in chronic achilles tendinopathy with\\u000a regard to the nature and severity of the lesion. Design. Imaging of both achilles tendons with ultrasonography and MRI was performed prior to unilateral surgery. Operative findings\\u000a and histological biopsies together served as a reference. Patients. Twenty-seven patients (22 men, 5 women; mean

M. Åström; Carl-Fredrik Gentz; Paul Nilsson; A. Rausing; Staffan Sjöberg; Nils Westlin

1996-01-01

285

Contrast-enhanced ultrasonography (voiding urosonography) of vesicoureteral reflux: State of the art  

Microsoft Academic Search

Three methods are currently used to identify vesicoureteral reflux (VUR) in children, namely, radiographic voiding cystourethrography,\\u000a radionuclide voiding cystography and, more recently, echo-enhanced voiding urosonography (VUS). Recent advances in tissue-harmonic\\u000a and contrast-specific imaging techniques, together with the development of second-generation contrast agents, have improved\\u000a the potential of ultrasonography both in the diagnosis and grading of VUR in children. Today, VUS

G. Zimbaro; G. Ascenti; C. Visalli; A. Bottari; F. Zimbaro; N. Martino; S. Mazziotti

2007-01-01

286

The relationship between inferior vena cava diameter measured by bedside ultrasonography and central venous pressure value  

PubMed Central

Objective: We aimed to present inferior vena cava (IVC) diameter as a guiding method for detection of relationship between IVC diameter measured noninvasively with the help of ultrasonography (USG) and central venous pressure (CVP) and evaluation of patient's intravascular volume status. Methods: Patients over the age of 18, to whom a central venous catheter was inserted to their subclavian vein or internal jugular vein were included in our study. IVC diameter measurements were recorded in millimeters following measurement by the same clinician with the help of USG both at the end-inspiratory and end-expiratory phase. CVP measurements were viewed on the monitor by means of piezoelectric transducer and recorded in mmHg. SPSS 18.0 package program was used for statistical analysis of data. Results: Forty five patients were included in the study. The patients had the diagnosis of malignancy (35.6%), sepsis (13.3%), pneumonia, asthma, chronic obstructive pulmonary disease (11.1%). 11 patients (24.4%) required mechanical ventilation while 34 (75.6%) patients had spontaneous respiration. In patients with spontaneous respiration, a significant relationship was found between IVC diameters measured by ultrasonography at the end of expiratory and inspiratory phases and measured CVP values at the same phases (for expiratory p = 0.002, for inspiratory p= 0.001). There was no statistically significant association between IVC diameters measured by ultrasonography at the end of expiration and inspiration and measured CVP values at the same phases in mechanically ventilated patients. Conclusions: IVC diameter measured by bedside ultrasonography can be used for determination of the intravascular volume status of the patients with spontaneous respiration. PMID:24772133

Citilcioglu, Serenat; Sebe, Ahmet; Oguzhan Ay, Mehmet; Icme, Ferhat; Avci, Akkan; Gulen, Muge; Sahan, Mustafa; Satar, Salim

2014-01-01

287

The Predictive Diagnostic Value of Serial Daily Bedside Ultrasonography for Severe Dengue in Indonesian Adults  

PubMed Central

Background Identification of dengue patients at risk for progressing to severe disease is difficult. Significant plasma leakage is a hallmark of severe dengue infection which can suddenly lead to hypovolemic shock around the time of defervescence. We hypothesized that the detection of subclinical plasma leakage may identify those at risk for severe dengue. The aim of the study was to determine the predictive diagnostic value of serial ultrasonography for severe dengue. Methodology/Principal Findings Daily bedside ultrasounds were performed with a handheld ultrasound device in a prospective cohort of adult Indonesians with dengue. Timing, localization and relation to dengue severity of the ultrasonography findings were determined, as well as the relation with serial hematocrit and albumin values. The severity of dengue was retrospectively determined by WHO 2009 criteria. A total of 66 patients with proven dengue infection were included in the study of whom 11 developed severe dengue. Presence of subclinical plasma leakage at enrollment had a positive predictive value of 35% and a negative predictive value of 90% for severe dengue. At enrollment, 55% of severe dengue cases already had subclinical plasma leakage, which increased to 91% during the subsequent days. Gallbladder wall edema was more pronounced in severe than in non-severe dengue patients and often preceded ascites/pleural effusion. Serial hematocrit and albumin measurements failed to identify plasma leakage and patients at risk for severe dengue. Conclusions/Significance Serial ultrasonography, in contrast to existing markers such as hematocrit, may better identify patients at risk for development of severe dengue. Patients with evidence of subclinical plasma leakage and/or an edematous gallbladder wall by ultrasonography merit intensive monitoring for development of complications. PMID:23785539

Michels, Meta; Sumardi, Uun; de Mast, Quirijn; Jusuf, Hadi; Puspita, Mita; Dewi, Intan Mauli Warma; Sinarta, Sylvia; Alisjahbana, Bachti; van der Ven, André J. A. M.

2013-01-01

288

High-resolution ultrasonography of the TMJ: helpful diagnostic approach for patients with TMJ disorders ?  

Microsoft Academic Search

Purpose: The purpose of this study was to investigate patients with a clinical diagnosis of internal derangement to determine the diagnostic value of static high resolution ultrasonography (HR-US) when compared with magnetic resonance imaging (MRI). Patients: Sixty-six patients (132 temporomandibular joints [TMJs]) with a clinical diagnosis of internal derangement were investigated by HR-US and MRI. Methods: MRI and HR-US investigations

Siegfried Jank; Ansgar Rudisch; Gerd Bodner; Iris Brandlmaier; Stefan Gerhard; Rüdiger Emshoff

2001-01-01

289

Diagnostic quality of dynamic high-resolution ultrasonography of the TMJ—a pilot study  

Microsoft Academic Search

The aim of this study was to compare sensitivity, specificity, accuracy and positive and negative predictive value for high-resolution ultrasonography (HR-US) in diagnosing degenerative changes, effusion and disk displacement using magnetic resonance imaging (MRI) as a reference. Over a period of 6 months, 100 patients with TMJ disorders (200 TMJs) were investigated by an experienced radiologist with HR-US and magnetic

S. Jank; R. Emshoff; B. Norer; M. Missmann; A. Nicasi; H. Strobl; R. Gassner; A. Rudisch; G. Bodner

2005-01-01

290

Use of ultrasonography as a diagnostic and therapeutic tool in sports medicine.  

PubMed

Ultrasonography has many important advantages over other imaging modalities and many important applications in sports medicine. This article presents an evidence-based discussion of the use of ultrasound technology to diagnose and treat common musculoskeletal disorders, with emphasis on the shoulder, elbow, hip, knee, and foot and ankle. Topics include basic principles, scan artifacts, the appearance of musculoskeletal structure characteristics and pathologies, and various diagnostic and therapeutic applications in sports medicine. PMID:24485118

Lesniak, Bryson P; Loveland, Dustin; Jose, Jean; Selley, Ryan; Jacobson, Jon A; Bedi, Asheesh

2014-02-01

291

Reproducibility and instrument validity of a new ultrasonography-based system for measuring cervical spine kinematics  

Microsoft Academic Search

Objective. To report instrument validity of CMS 70P, a new ultrasonography-based system for spatial kinematic analysis of the spine and its application in studying the reproducibility of cervical motion findings in healthy subjects.Background. Reproducibility of cervical motion has been investigated using various instruments and consisting in most cases of short test–retest time intervals of between minutes to days.Methods. Performance of

Zeevi Dvir; Tamara Prushansky

2000-01-01

292

A Case of Fetal Complete Heart Block Recorded by Magnetocardiography, Ultrasonography and Direct Fetal Electrocardiography  

Microsoft Academic Search

Fetal magnetocardiograms (FMCGs) were recorded in a case of fetal complete heart block (CHB) from the 30th to the 37th week of gestation using the multichannel SQUID system (Hitachi, Japan). M-mode ultrasonography and direct fetal electrocardiography using needle electrodes revealed fetal CHB. We identified independent fetal P-waves and QRS complexes in the FMCG recorded in the 32nd week of gestation

Takayoshi Hosono; Yoshihide Chiba; Mika Shinto; Susumu Miyashita; Kazunori Muramaki; Akihiko Kandori; Keiji Tsukada

2001-01-01

293

Transcranial Doppler ultrasonography in the detection of venous to arterial shunting in acute stroke and transient ischaemic attacks.  

PubMed Central

OBJECTIVES: To prospectively evaluate the prevalence of venous to arterial shunting in patients with acute stroke and transient ischaemic attacks (TIAs) using transcranial Doppler ultrasonography (TCD) with saline contrast. METHODS: A consecutive series of patients with stroke or TIA underwent contrast TCD. Patients were subsequently divided into groups according to causative factors for stroke or TIA. The prevalence of right to left shunt was assessed within these groups. RESULTS: A total of 210 patients underwent contrast TCD. A right to left shunt was detected in 28.6% of patients (60 of 210). Among the patients with cryptogenic stroke or TIA, 37.1% (43 of 116) had a positive contrast TCD whereas only 18% (17 of 94) with another identifiable cause had a positive test (P = 0.0024). When age was used to further classify those patients with cryptogenic stroke, TCD was positive in 59.3% patients (16 of 27) of < or = 50 years of age versus 30.3% of patients (27 of 89) > 50 years of age (P = 0.0058). CONCLUSIONS: There was a significantly higher prevalence of venous to arterial shunting in patients with stroke or TIA of undetermined cause than in stroke patients with identifiable aetiologies, as detected by contrast TCD. The prevalence of a venous to arterial shunt was significantly higher in the younger group with cryptogenic stroke. Saline contrast TCD is a relatively non-invasive bedside procedure useful in the detection of venous to arterial shunting. Images PMID:8937335

Yeung, M; Khan, K A; Shuaib, A

1996-01-01

294

Ultrasonographic reference values for assessing normal radial nerve ultrasonography in the normal population  

PubMed Central

High-resolution ultrasound has been used recently to characterize median and ulnar nerves, but is seldom used to characterize radial nerves. The radial nerve is more frequently involved in entrapment syndromes than the ulnar and median nerves. However, the reference standard for normal radial nerves has not been established. Thus, this study measured the cross-sectional areas of radial nerves of 200 healthy male or female volunteers, aged 18 to 75, using high-resolution ultrasound. The results showed that mean cross-sectional areas of radial nerves at 4 cm upon the lateral epicondyle of the humerus and mid-humerus (midpoint between the elbow crease and axilla) were 5.14 ± 1.24 and 5.08 ± 1.23 mm2, respectively. The age and the dominant side did not affect the results, but the above-mentioned cross-sectional areas were larger in males (5.31 ± 1.25 and 5.19 ± 1.23 mm2) than in females (4.93 ± 1.21 and 4.93 ± 1.23 mm2, respectively). In addition, the cross-sectional areas of radial nerves were positively correlated with height and weight (r = 0.38, 0.36, respectively, both P < 0.05). These data provide basic clinical data for the use of high-resolution ultrasound for the future diagnosis, treatment, and prognostic evaluation of peripheral neuropathies. PMID:25422648

Chen, Jun; Wu, Shan; Ren, Jun

2014-01-01

295

Cystic breast lesions by conventional ultrasonography: sonographic subtype-pathologic correlation and BI-RADS Assessment  

PubMed Central

Introduction Appropriate categorization is very important because the clinical management of each subtype of cystic breast lesions (CBLs) differs. The purpose was to evaluate the sonographic subtype-pathologic correlation, and to identify the effectiveness of the Breast Imaging Reporting and Data System (BI-RADS)-ultrasound (US) for differentiation of benign and malignant CBLs. Material and methods A database from December 1, 2007 and November 30, 2009 was identified in the Department of Diagnostic Ultrasound, Rui Jin Hospital, School of Medicine, Shanghai Jiao Tong University, China. Those patients with palpable or clinical symptomatic breast masses were associated with a cystic component in lesions on breast US. All patients underwent a subsequent fine-needle/core-needle biopsy or surgical excision. The sonographic findings were analyzed according to the BI-RADS-US, and were categorized by two different methods of subtype categorization compared with the pathologic results. Results Ninety-nine breast cystic lesions in 83 women were included, among whom 16 patients were identified with bilateral cystic lesions. The total malignancy rate of CBLs was 14.1% (95% confidence interval 7.3–21.0%). Among 99 CBLs, 14 malignant lesions were associated with sonographic appearances of complex cystic lesions, while the remaining subtypes were benign. Shape, margin, echo pattern, orientation, calcification, and vascularity were statistically significantly different between the benign and malignant lesions (p = 0.010, p = 0.004, p < 0.001, p < 0.001, p = 0.036, and p < 0.001, respectively) (degrees of freedom = 1). Conclusions By comparison of the two different methods of subtype categorization of CBLs, the appropriate 5-variety classification should be suggested. The BI-RADS-US was useful for differentiating benign from malignant cystic lesions. PMID:24701218

Chen, Man; Wang, Wen Ping

2014-01-01

296

Placenta: angiogenesis and vascular assessment through three-dimensional power Doppler ultrasonography  

Microsoft Academic Search

The placenta is fundamental for fetal development. It combines the functions of an endocrine organ, kidneys, lungs and intestines,\\u000a purifying catabolites, oxygenating and nourishing the conceptus. Its fetal portion is the largest part develops from the chorionic\\u000a sac. The maternal portion, which is smaller, is originated in the endometrium, more specifically in the decidua basalis. The\\u000a placenta starts its function

Hélio Antonio Guimarães Filho; Lavoisier Linhares Dias da Costa; Edward Araújo Júnior; Luciano Marcondes Machado Nardozza; Paulo Martin Nowak; Antonio Fernandes Moron; Rosiane Mattar; Cláudio Rodrigues Pires

2008-01-01

297

[The use of ultrasonography in the acute scrotum edema in children].  

PubMed

Ultrasound dopplerography of testicles and high-frequency ultrasonography of the spermatic cord were used to increase the efficiency of diagnostics at the acute scrotum edema in children. The signs of testicular torsion are the thickening of the spermatic cord from 7 to 33 mm, its helical structure (like cochlea), decrease or the termination of a blood flow in the spermatic cord. The combination of sonographic signs testifies about testicular torsion without dependence from prescription of clinical manifestation of the disease. Not always it was possible to visualize the sessile hydatid separately from epididymis during procedure. But such indirect signs as expansion of the epididymis twice and its heterogeneity specified the sessile hydatid involvement. False-negative results of ultrasonography were received in third of all cases of testicular torsion. The given phenomenon was marked when intraorganic blood flow in testicles was defined with ultrasound at the beginning of disease. The further introduction of ultrasound dopplerography and high-frequency ultrasonography into clinical practice will allow to improve results of treatment of children with acute testicular diseases. PMID:18454110

Minaev, S V; Bolotov, Iu N; Pavliuk, N N

2008-01-01

298

Assessment.  

PubMed

The role of the occupational therapist in today's health care system is discussed in relation to the large numbers of patients with treatment problems and the relatively small numbers in the profession. The importance of good, efficient assessment procedures is emphasized in order to maximize the profession's helpfulness. Review of current practices among occupational therapists in carrying out the assessment function is presented along with data from a survey of therapists in physical disabilities practice. The article concludes with a plea for the increased use of standardized evaluation tools by occupational therapists to both make their efforts more effective and to build credibility for the services of the profession. PMID:23944694

Bowker, A M

1984-01-01

299

Small hepatocellular carcinomas: ultrasonography guided percutaneous radiofrequency ablation.  

PubMed

Current guidelines advocate percutaneous radiofrequency (RF) ablation as a standard treatment of early stage hepatocellular carcinoma (HCC) for up to three tumors ?3 cm in diameter. The local efficacy evaluated with short-term radiological examination may be overrated, whereas that assessed by histopathological measure might be underestimated. Long-term clinical follow-up studies guarantee the effectiveness of RF ablation for small HCC, which is now almost comparable in benefits to surgical resection. US is the most common guiding modality for percutaneous RF ablation for small HCC. However, the technical feasibility is often limited due to poor conspicuity of the index tumor on US. Implementation of artificial ascites, contrast-enhanced harmonic US, and fusion imaging of US with CT/MR can be helpful to enhance the technical feasibility of US-guided RF ablation of small HCC. PMID:22467060

Kim, Young Jun; Lee, Min Woo; Park, Hee Sun

2013-02-01

300

Muscle ultrasonography for detecting fasciculations in frontotemporal dementia.  

PubMed

Ultrasound detection of muscle fasciculations was recently proposed for assessing lower motor neuron (LMN) dysfunction in ALS patients. Given the continuum between ALS and frontotemporal degeneration (FTD), the aim of the present study was to evaluate muscle ultrasound (MUS) in FTD both for feasibility and prevalence of fasciculations. Twenty-two FTD patients were examined (five muscles bilaterally: biceps brachii, first dorsalis interosseous, T10 paraspinalis, vastus lateralis, tibialis anterior) with a 7-MHz linear array transducer and a fasciculation score (FS) computed. Twenty-two matched cognitively-intact control subjects and six ALS patients were also included. Results showed that MUS was feasible, reliable and well tolerated in all subjects. Two FTD/MND patients displayed very high FS values, similar to those in ALS patients. The remaining 20 FTD patients displayed a mean FS value significantly higher than the control group with six patients (30%) having FS values out of the range of controls. Disease progression rate correlated with the FS. In conclusion, MUS can be easily applied to FTD patients and represents a non-invasive technique for defining LMN involvement in these patients. LMN dysfunction is a frequent condition in FTD and might identify a subset of patients with a different clinical course. PMID:24863345

Tremolizzo, Lucio; Susani, Emanuela; Aliprandi, Angelo; Salmaggi, Andrea; Ferrarese, Carlo; Appollonio, Ildebrando

2014-12-01

301

Automatic detection and measurement of femur length from fetal ultrasonography  

NASA Astrophysics Data System (ADS)

Femur bone length is used in the assessment of fetal development and in the prediction of gestational age (GA). In this paper, we present a completely automated two-step method for identifying fetal femur and measuring its length from 2D ultrasound images. The detection algorithm uses a normalized score premised on the distribution of anatomical shape, size and presentation of the femur bone in clinically acceptable scans. The measurement process utilizes a polynomial curve fitting technique to determine the end-points of the bone from a 1D profile that is most distal from the transducer surface. The method has been tested with manual measurements made on 90 third trimester femur images by two radiologists. The measurements made by the experts are strongly correlated (Pearson's coefficient = 0.95). Likewise, the algorithm estimate is strongly correlated with expert measurements (Pearson's coefficient = 0.92 and 0.94). Based on GA estimates and their bounds specified in Standard Obstetric Tables, the GA predictions from automated measurements are found to be within +/-2SD of GA estimates from both manual measurements in 89/90 cases and within +/-3SD in all 90 cases. The method presented in this paper can be adapted to perform automatic measurement of other fetal limbs.

Mukherjee, Prateep; Swamy, Gokul; Gupta, Madhumita; Patil, Uday; Krishnan, Kajoli Banerjee

2010-03-01

302

Automatic detection and estimation of biparietal diameter from fetal ultrasonography  

NASA Astrophysics Data System (ADS)

Fetal bi-parietal diameter (BPD) is known to provide a reliable estimate of gestational age (GA) of a fetus in the first half of pregnancy. In this paper, we present an automated method to identify and measure BPD from B-mode ultrasound images of fetal head. The method (a) automatically detects and places a region-of-interest on the head based on a prior work in our group (b) utilizes the concept of phase congruency for edge detection and (c) employs a cost function to identify the third ventricle inside the head (d) measures the BPD along the perpendicular bisector of occipital frontal diameter (OFD) from the outer rim of the cranium closer to the transducer to the inner rim of the cranium away from the transducer. The cost function is premised on the distribution of anatomical shape, size and presentation of the third ventricle in images that adhere to clinical guidelines describing the scan plane for BPD measurement. The OFD is assumed to lie along the third ventricle. The algorithm has been tested on 137 images acquired from four different scanners. Based on GA estimates and their bounds specified in Standard Obstetric Tables, the GA predictions from automated measurements are found to be within +/-2SD of GA estimates from manual measurements by the operator and a second expert radiologist in 98% of the cases. The method described in this paper can also be adapted to assess the accuracy of the scan plane based on the presence/absence of the third ventricle.

Annangi, Pavan; Banerjee Krishnan, Kajoli; Banerjee, Jyotirmoy; Gupta, Madhumita; Patil, Uday

2011-03-01

303

Low-intensity pulsed ultrasonography versus electrical stimulation for fracture healing: a systematic review and network meta-analysis  

PubMed Central

Background To best inform evidence-based patient care, it is often desirable to compare competing therapies. We performed a network meta-analysis to indirectly compare low intensity pulsed ultrasonography (LIPUS) with electrical stimulation (ESTIM) for fracture healing. Methods We searched the reference lists of recent reviews evaluating LIPUS and ESTIM that included studies published up to 2011 from 4 electronic databases. We updated the searches of all electronic databases up to April 2012. Eligible trials were those that included patients with a fresh fracture or an existing delayed union or nonunion who were randomized to LIPUS or ESTIM as well as a control group. Two pairs of reviewers, independently and in duplicate, screened titles and abstracts, reviewed the full text of potentially eligible articles, extracted data and assessed study quality. We used standard and network meta-analytic techniques to synthesize the data. Results Of the 27 eligible trials, 15 provided data for our analyses. In patients with a fresh fracture, there was a suggested benefit of LIPUS at 6 months (risk ratio [RR] 1.17, 95% confidence interval [CI] 0.97–1.41). In patients with an existing nonunion or delayed union, ESTIM had a suggested benefit over standard care on union rates at 3 months (RR 2.05, 95% CI 0.99–4.24). We found very low-quality evidence suggesting a potential benefit of LIPUS versus ESTIM in improving union rates at 6 months (RR 0.76, 95% CI 0.58–1.01) in fresh fracture populations. Conclusion To support our findings direct comparative trials with safeguards against bias assessing outcomes important to patients, such as functional recovery, are required. PMID:24869616

Ebrahim, Shanil; Mollon, Brent; Bance, Sheena; Busse, Jason W.; Bhandari, Mohit

2014-01-01

304

Contribution of subcutaneous abdominal fat on ultrasonography to carotid atherosclerosis in patients with type 2 diabetes mellitus  

PubMed Central

Background Whereas visceral abdominal adipose tissue (VAT) is associated with cardiometabolic risk, there is debate regarding the role of subcutaneous abdominal adipose tissue (SAT). The aim of this study was to investigate the relationships of subcutaneous and visceral abdominal fat with carotid atherosclerosis in patients with type 2 diabetes mellitus (T2DM). Methods A total of 234 patients (men 131, women 103, mean age: 53 years) with T2DM were enrolled. Carotid intima-media thickness (CIMT), abdominal subcutaneous fat thickness (SFT) and visceral fat thickness (VFT) were assessed by high-resolution B-mode ultrasonography (US). Results Compared to women, men had significantly higher VFT and lower SFT (p?=?0.002, p?=?0.04, respectively). In partial correlation coefficient analyses between CIMT and abdominal fat thickness after adjustment for body mass index (BMI), SFT showed a negative correlation with CIMT in men (r?=?-0.27, p?=?0.03). VFT was not correlated with CIMT in either men or women. In women, SFT was not correlated with CIMT (r?=?-0.01, p?=?0.93). VFT/SFT ratio was not correlated with CIMT in either men or women. In multivariate regression analyses adjusted for BMI and other CVD risk factors, SFT but not VFT was independently inversely associated with CIMT in men but not in women (p?assessed by US was inversely associated with carotid atherosclerosis in patients with T2DM, particularly men. Further research into the different roles of the two types of abdominal adipose tissue in both men and women is warranted. PMID:24678948

2014-01-01

305

Transvaginal photoacoustic imaging probe and system based on a multiport fiber-optic beamsplitter and a real time imager for ovarian cancer detection  

NASA Astrophysics Data System (ADS)

This paper presents a real-time transvaginal photoacoustic imaging probe for imaging human ovaries in vivo. The probe consists of a high-throughput (up to 80%) fiber-optic 1 x 19 beamsplitters, a commercial array ultrasound transducer, and a fiber protective sheath. The beamsplitter has a 940-micron core diameter input fiber and 240-micron core diameter output fibers numbering 36. The 36 small-core output fibers surround the ultrasound transducer and delivers light to the tissue during imaging. A protective sheath, modeled in the form of the transducer using a 3-D printer, encloses the transducer with array of fibers. A real-time image acquisition system collects and processes the photoacoustic RF signals from the transducer, and displays the images formed on a monitor in real time. Additionally, the system is capable of coregistered pulse-echo ultrasound imaging. In this way, we obtain both morphological and functional information from the ovarian tissue. Photoacousitc images of malignant human ovaries taken ex vivo with the probe revealed blood vascular and networks that was distinguishable from normal ovaries, making the probe potential useful for characterizing ovarian tissue.

Kumavor, Patrick D.; Alqasemi, Umar; Tavakoli, Behnoosh; Li, Hai; Yang, Yi; Zhu, Quing

2013-03-01

306

Utility of 18 F-fluoro-deoxyglucose emission tomography\\/computed tomography fusion imaging ( 18 F-FDG PET\\/CT) in combination with ultrasonography for axillary staging in primary breast cancer  

Microsoft Academic Search

Background  Accurate evaluation of axillary lymph node (ALN) involvement is mandatory before treatment of primary breast cancer. The aim\\u000a of this study is to compare preoperative diagnostic accuracy between positron emission tomography\\/computed tomography with18F-fluorodeoxyglucose (18F-FDG PET\\/CT) and axillary ultrasonography (AUS) for detecting ALN metastasis in patients having operable breast cancer, and\\u000a to assess the clinical management of axillary18F-FDG PET\\/CT for therapeutic

Shigeto Ueda; Hitoshi Tsuda; Hideki Asakawa; Jiro Omata; Kazuhiko Fukatsu; Nobuo Kondo; Tadaharu Kondo; Yukihiro Hama; Katsumi Tamura; Jiro Ishida; Yoshiyuki Abe; Hidetaka Mochizuki

2008-01-01

307

Preliminary results on the use of diagnostic ultrasonography as a management tool to quantify egg production potential in breeding ostrich (Struthio camelus australis) females.  

PubMed

An ostrich breeding flock, joined as individual breeding pairs (n = 136 pairs), was used to investigate the possibility of diagnostic ultrasonography as a method to predict the reproductive performance of ostrich females during a breeding season. Follicular activity was easily detected and quantified by using diagnostic ultrasonography. One to 8 follicles were recorded in 25% of females scanned at the beginning of the 9-month breeding season. At the end of the breeding season, 1-3 follicles were observed in 28.7% females. Females in which follicular activity was observed came into production earlier than those in which no follicles were observed, with the mean (+/- SE) number of days to the production of the 1st egg being 22.3 +/- 12.5 and 87.4 +/- 7.2 days, respectively. Females in which follicular activity was observed at the beginning of the breeding season, produced on average 181% more eggs during the 1st month of the breeding season (P < 0.01) than females in which no follicular activity was observed (6.67 +/- 0.70 vs 2.37 +/- 0.41 eggs). Egg production over the first 2 months of breeding and over the entire breeding season were similarly affected (P < 0.01), with the mean number of eggs produced over the first 2 months of the breeding season being 14.7 +/- 1.5 for females with observed follicular activity and 7.4 +/- 0.9 eggs for females with no observed follicular activity. Females in which follicular activity was observed at the end of the breeding season produced on average 108% more eggs (P < 0.01) during the last month of the breeding season than females in which no follicular activity was observed (2.77 +/- 0.43 vs. 1.33 +/- 0.27 eggs). There was a tendency (P = 0.06) for egg production over the last 2 months to be similarly affected (6.10 +/- 0.85 vs 4.19 +/- 0.54 eggs). No relationship with egg production over the entire breeding season was found for the end-of-the-breeding-season observations. Diagnostic ultrasonography can thus be used as a management tool to identify reproductively healthy ostrich females and also females with a higher egg production potential over a period of 2 months after or prior to assessment. Future studies should focus on the development of the technique to predict reproductive performance over entire breeding seasons for selection purposes. PMID:12240768

Lambrechts, H; Cloete, S W P; Swart, D; Greyling, J P C

2002-06-01

308

Serial Transrectal Ultrasonography for Monitoring the Reproductive Activity of the Asiatic Black Bear (Ursus thibetanus ussuricus).  

PubMed

This study evaluated the structural changes in the reproductive tract of Asiatic black bears using serial transrectal ultrasonography. In addition, the ultrasonographic observations were compared with the results of vaginal cytology and hormonal analyses. The collection of blood for hormonal analysis, vaginal cytology and transrectal ultrasonography was performed in two bears (Bears 1 and 2) from June 2011 to August 2013 without mating and in a third bear (Bear 3) from April to December 2012, allowing natural mating. Serial ultrasonographic observations showed cyclic changes in ovarian structures (e.g. emergence of small follicles, growth and ovulation of dominant follicles and corpus luteum (CL) formation) during the reproductive cycles of the three bears. The diameter of the uterine horns remained similar throughout the reproductive cycle in Bears 1 and 2, and it remained similar from April until October, but an enlargement containing foetuses was observed in Bear 3 in December. The ultrasonographic observations were consistent with the data obtained through vaginal cytology and progesterone analysis during the reproductive cycle. An average of 4.0 (±0.4) dominant follicles was observed during the oestrous stage (May-August), during which the superficial cells accounted for >90% of the total vaginal cells. In addition, the detection of an average of 2.6 (±0.2) CL was associated with increased plasma progesterone concentrations (3.0 ± 0.4 ng/ml) between June and December (near hibernation). In conclusion, serial transrectal ultrasonography demonstrated yearly oestrous (ovulation) cycles via follicular dynamics and CL formation on ovaries, accordingly with vaginal cytology and hormonal level in the Asiatic black bear. PMID:25522189

Kang, Hg; Jeong, Dh; Yang, Jj; Lee, Bk; Kong, Jy; Lee, Jw; Kim, Ih

2015-02-01

309

Resected specimen evaluation, anorectal manometry, endoanal ultrasonography and clinical follow-up after STARR procedures  

PubMed Central

AIM: To investigate stapled transanal rectal resection (STARR) procedures as surgical techniques for obstructed defecation syndrome (ODS) by analyzing specimen evaluation, anorectal manometry, endoanal ultrasonography and clinical follow-up. METHODS: From January to December 2007, we have treated 30 patients. Fifteen treated with double PPH-01 staplers and 15 treated using new CCS 30 contour. Resected specimen were measured with respect to average surface and volume. All patients have been evaluated at 24 mo with clinical examination, anorectal manometry and endoanal ultrasonography. RESULTS: Average surface in the CCS 30 group was 54.5 cm2 statistically different when compared to the STARR group (36.92 cm2). The average volume in the CCS 30 group was 29.8 cc, while in the PPH-01 it was 23.8 cc and difference was statistically significant. The mean hospital stay in the CCS 30 group was 3.1 d, while in the PPH-01 group the median hospital stay was 3.4 d. As regards the long-term follow-up, an overall satisfactory rate of 83.3% (25/30) was achieved. Endoanal ultrasonography performed 1 year following surgery was considered normal in both of the studied groups. Mean resting pressure was higher than the preoperative value (67.2 mmHg in the STARR group and 65.7 mmHg in the CCS30 group vs 54.7 mmHg and 55.3 mmHg, respectively). Resting and squeezing pressures were lower in those patients not satisfied, but data are not statistically significant. CONCLUSION: The STARR procedure with two PPH-01 is a safe surgical procedure to correct ODS. The new Contour CCS 30 could help to increase the amount of the resected tissue without differences in early complications, post-operative pain and in hospital stay compared to the STARR with two PPH-01 technique. PMID:21633641

Naldini, Gabriele; Cerullo, Guido; Menconi, Claudia; Martellucci, Jacopo; Orlandi, Simone; Romano, Nicola; Rossi, Mauro

2011-01-01

310

[Evaluation of cavernous artery by color Doppler ultrasonography--significance of ultrasonic beam angle].  

PubMed

Penile Doppler ultrasonography is widely accepted as an essential examination in the diagnosis of impotence. However, measurement blood flow velocity using Doppler ultrasonography may be subject to some errors. We performed color Doppler ultrasonography in 63 patients with normal penile vascular function as diagnosed using positive responses to intracavernous pharmacological stimulation. We compared the Doppler measurement results of the 126 cavernous arteries and the ultrasonic beam angles. We used a Hitachi EUB 515, a sonographic probe of 7.5 MHz, a sampling width of 0.8 mm, a sampling depth of 1 mm, and a wall motion filter was not used. Ultrasonic beam angles were 5 to 77 degrees. The mean peak systolic velocity and end diastolic velocity values were 40. 0 cm/s and 3.9 cm/sec, respectively. The peak systolic velocity and end diastolic velocity values remained stable regardless of the ultrasonic beam angles (Kruskal-Wallis test, p = 0.56, p = 0.70). However, the variance of values became greater when the ultrasonic beam angles was larger than 55 degrees in the case of peak systolic velocity (F test, p < 0.05) and 50 degrees in the case of end diastolic velocity (F test, p < 0.05), indicating a reduction in reliability. Resistance index variance was significantly higher when ultrasonic beam angle exceeds 50 degrees (F test, p < 0.05). We believe that we should accept only those cavernous artery peak systolic velocity measurements as reliable when the ultrasound beam angle is less than 55 degrees.(ABSTRACT TRUNCATED AT 250 WORDS) PMID:7609357

Kawanishi, Y; Kimura, K; Naroda, T; Yamanaka, M; Matsushita, K; Numata, A; Yuasa, M; Tamura, M; Kagawa, S

1995-06-01

311

Ultrasonography in distinguishing optic neuritis from nonarteritic anterior ischemic optic neuropathy  

PubMed Central

Background and Objectives: Optic neuritis (ON) and nonarteritic anterior ischemic optic neuropathy (NAION) have some overlapping clinical profiles. We evaluated the usefulness of B-scan ultrasonography in distinguishing ON from NAION by measuring diameter of the optic nerve. Materials and Methods: Consecutive patients with an acute noncompressive unilateral optic neuropathy with relative afferent pupillary defect and onset of visual loss during the last 2 weeks were included. Diagnosis of ON was based on age ? 35 years, orbital pain associated with eye movement, and no disk edema, and diagnosis of NAION was based on age ? 60 years, no orbital pain associated with eye movement, and presence of disk edema. Age- and gender-matched subjects without ocular disease were selected for comparison. The diameter of the optic nerve was measured by a single radiologist with B-scan ultrasonography. Results: In ON patients, the mean diameter of the affected nerve was significantly larger than that of the unaffected nerve and also larger than that of the right nerve of young controls; P < 0.05. In NAION patients, however, there was no significant difference between the mean diameter of the affected nerve and of the unaffected nerve or the right nerve of elderly controls; P > 0.05. Also, the diameter of the affected nerve was significantly larger in ON than in AION patients; P < 0.05. Conclusion: B-scan ultrasonography is helpful in the early stages of optic neuropathy to distinguish ON from NAION in those cases for which the diagnosis is still uncertain after clinical evaluation. PMID:23210062

Dehghani, Alireza; Giti, Masoomeh; Akhlaghi, Mohamad Reza; Karami, Mehdi; Salehi, Fatemeh

2012-01-01

312

Real-time chest ultrasonography: a comprehensive review for the pulmonologist.  

PubMed

This review discusses real-time pulmonary ultrasonography (US) for the practicing pulmonologist. US supplements chest radiography and chest CT scanning. Major advantages include bedside availability, absence of radiation, and guided aspiration of fluid-filled areas and solid tumors. Pulmonary vessels and vascular supply of consolidations may be visualized without contrast. US may help to diagnose conditions such as pneumothorax, hemothorax, pleural or pericardial effusion, pneumonia, and pulmonary embolism in the critically ill patient who is in need of bedside diagnostic testing. The technique of US, which is cost-effective compared to CT scanning and MRI, may be learned relatively easily by the pulmonologist. PMID:12426282

Beckh, Sonja; Bölcskei, Pál L; Lessnau, Klaus-Dieter

2002-11-01

313

Endoscopic ultrasonography: an advancing option with duality in both diagnosis and treatment of gastrointestinal oncology  

PubMed Central

Since their introduction into the clinical practices in 1980s, techniques of endoscopic ultrasonography (EUS) have been rapidly developing and are now in widespread use in gastrointestinal oncology. Evolving from the classical option, EUS today has been much innovated with addition of a variety of novel ideation which makes it a powerful tool with encouraging duality for both diagnostic and therapeutic purposes. There is a dire need for physicians in this field to understand the status quo of EUS as related to the management and detection of gastrointestinal tumors, which is globally reviewed in this paper.

2014-01-01

314

Thrombotic Occlusion during Intravascular Ultrasonography-Guided Percutaneous Coronary Intervention of Stumpless Chronic Total Occlusion  

PubMed Central

Percutaneous coronary intervention (PCI) of stumpless chronic total occlusion (CTO) lesions with a side branch stemming from the occlusion have a significantly lower treatment success rate because physicians cannot identify an accurate entry point with only conventional angiographic images. An intravascular ultrasonography (IVUS)-guided wiring technique might be useful for the penetration of stumpless CTO. We recently experienced thrombotic occlusion during an IVUS-guided stumpless CTO procedure. The cause of the thrombosis is not completely understood; the thrombosis may have been associated with the long use of the IVUS catheter. Special precautions should be taken to prevent thrombus in such cases. PMID:25568847

Lee, Un Joo; Kim, Hyun Soo; Lee, Cheolhyun; Kim, Kwang-yeol

2014-01-01

315

[A Case of Splenic Hamartoma Diagnosed by Contrast-enhanced Ultrasonography and Magnetic Resonance Imaging].  

PubMed

Splenic hamartoma is a very rare benign tumor, which is usually found incidentally after splenectomy or autopsy. Although percutaneous needle biopsy can be performed, it carries a high risk of bleeding after the procedure. Therefore, diagnosis is usually made by surgical resection. Herein, we report a case of splenic hamartoma diagnosed by magnetic resonance imaging and contrast-enhanced ultrasonography, which enables visualization of the unique signals of microbubbles in the vessels in real time. Relevant literature is also reviewed. (Korean J Gastroenterol 2014;64:380-386). PMID:25530591

Kim, Hyeon Sik; Kim, Tae Hyo; Lee, Jae Min; Kim, Hyun Jin; Jung, Woon Tae; Lee, Ok Jae; Kim, Ji Eun; Bae, Kyung Soo

2014-12-25

316

Functional ultrasound of the anal canal. The effect of pregnancy and childbirth .  

E-print Network

??This thesis is concerned with functional three-dimensional ultrasound of the anal canal. Comparing acquisitions assessed with endoanal- and transvaginal transducers, the transvaginal transducer turned out… (more)

Olsen, Ingrid Petrikke

2011-01-01

317

Imaging techniques for the pre-surgical diagnosis of adnexal tumours.  

PubMed

A correct diagnosis of any adnexal mass is essential to triage women to appropriate treatment pathways. Several imaging techniques are available that may be used to provide an assessment of a mass before treatment, such as transvaginal ultrasonography, magnetic resonance imaging, computed tomography, and positron emission tomography combined with computed tomography. In this chapter, we focus in depth on the role of transvaginal ultrasonography, as current evidence suggests it is the most appropriate initial imaging investigation to identify and characterise any mass if present in women suspected of having adnexal pathology. Subjective assessment by an experienced ultrasound examiner is the optimal approach to diagnose masses, followed by risk models and rules developed by the International Ovarian Tumor Analysis study. A group of tumours has proven difficult to classify with transvaginal ultrasound, and remain a diagnostic challenge for which accurate second-stage tests would be of value. Some studies suggest that magnetic resonance imaging (MRI), compared with other imaging modalities, may play a role in the assessment of this cohort of 'difficult to classify' adnexal masses. These studies, however, did not report quality of transvaginal ultrasonography (i.e. experience level of the examiner) and lacked uniformity in describing the criteria used to define such 'difficult' masses. On the basis of standardised terminology developed by the International Ovarian Tumor Analysis study to describe adnexal masses, as well as prediction models and rules developed in the course of the study, we propose new criteria that we can use to clearly define complex or 'difficult to classify' adnexal masses to focus the role for second-line imaging tests, such as conventional magnetic resonance imaging combined with dynamic contrast-enhanced or diffusion-weighted sequences on masses where further tests other than ultrasonography would be of value. PMID:24780415

Kaijser, Jeroen; Vandecaveye, Vincent; Deroose, Christophe M; Rockall, Andrea; Thomassin-Naggara, Isabelle; Bourne, Tom; Timmerman, Dirk

2014-07-01

318

Clinical translation in the treatment of hepatocellular carcinoma following the introduction of contrast-enhanced ultrasonography with Sonazoid  

PubMed Central

Some hepatocellular carcinoma (HCC) nodules are detectable with dynamic computed tomography, but not by conventional B-mode ultrasonography (US). Contrast-enhanced US (CEUS) with Sonazoid, a new injectable contrast agent, has been used in Japan since January 2007. The primary advantage of this agent is the ability to maintain observations continuously in the Kupffer phase. We assessed the clinical role of CEUS with Sonazoid for radiofrequency ablation (RFA). From January 2005 to December 2008, 1142 patients were treated with surgical resection, RFA, percutaneous ethanol injection or transcatheter arterial chemoembolization, following the exclusion of those patients treated with chemotherapy or supportive care. The patients included in the study were divided into the pre-CEUS (n=451, 2005 and 2006) and post-CEUS (n=691, 2007 and 2008) groups. Clinical background (e.g., etiology, Child-Pugh classification, tumor node metastasis stage, percentage of patients matched with Milan criteria and selected therapies) was compared between the two groups. In addition, naïve cases were compared between the groups. There were 130 naïve HCC cases in the pre-CEUS group and 171 in the post-CEUS group. Although there were no significant differences for clinical background, the percentage of RFA cases increased from 21 (n=95) to 32% (n=219) and from 32 (n=41) to 52% (n=89) for total and naïve subjects, respectively, after CEUS was introduced (P<0.01). In naïve cases treated with RFA, tumor numbers in the post-CEUS group were larger than those of the pre-CEUS group (1.15±0.48 vs. 1.40±0.67; P<0.01). CEUS with Sonazoid, therefore, makes it possible to perform RFA in a considerable number of HCC cases that would otherwise be invisible by conventional B-mode US. PMID:22966256

HIRAOKA, ATSUSHI; ICHIRYU, MISA; TAZUYA, NAYU; OCHI, HIRONORI; TANABE, ATSUSHI; NAKAHARA, HIROMASA; HIDAKA, SATOSHI; UEHARA, TAKAHIDE; ICHIKAWA, SOICHI; HASEBE, AKI; MIYAMOTO, YASUNAO; NINOMIYA, TOMOYUKI; HIROOKA, MASASHI; ABE, MASANORI; HIASA, YOICHI; MATSUURA, BUNZO; ONJI, MORIKAZU; MICHITAKA, KOJIRO

2010-01-01

319

Contrast-enhanced ultrasonography evaluation after autologous fat grafting in scar revision  

PubMed Central

Aim Fat transfer is commonly used to fill loss of volume in depressed scars caused by trauma, deep burns or surgery. The aim of the study is to investigate the degree of fat graft take through evaluation of the microcirculation of grafted autologous adipose tissue using contrast-enhanced ultrasonography. Patients and method From 2010 to 2012 at the Department of Plastic and Reconstructive Surgery of the Traumatological Center in Turin, a study population was selected from patients with surgical indications for autologous fat transfer for scar correction. For each surgical procedure patients underwent a clinical and sonographic evaluation before and after intervention (at 1 month and 3 months). Results Out of a total of 28 interventions, 24 showed a good result; defined as improvement of the scar, and confirmed by the presence of vascularization in the transplanted tissue. In 4 cases, there was a lack of blood supply at the first evaluation but an initial good clinical scar correction. The absence of blood vessels was confirmed at 3 months accompanied by complete resorption of the transferred fat with a failure of good clinical outcome. Conclusion Contrast-enhanced ultrasonography was able to evaluate the microvasculature of adipose tissue after fat transfer. Due to this characteristic, it allows to monitor and predict the take of adipose tissue and provide realistic and early information on the clinical outcome of fat transfer. PMID:25644727

BOLLERO, D.; POZZA, S.; GANGEMI, E.N.; DE MARCHI, A.; GANEM, J.; EL KHATIB, A.M.; FALETTI, C.; STELLA, M.

2014-01-01

320

Application of Bland-Altman Method in Comparing Transrectal and Transabdominal Ultrasonography for Estimating Prostate Volume  

PubMed Central

Background Estimating prostate volume using less invasive transabdominal ultrasonography (TAUS) instead of transrectal ultrasonography (TRUS) is of interest in terms of identifying their agreement level. Previous reports on this subject, applied general correlation coefficient as the level of agreement. This study uses Bland-Altman method to quantify TAUS and TRUS agreement on estimating prostate volume. Methods Total prostate gland volume of 40 patients with signs and symptoms of benign prostatic hyperplasia were measured using TAUS and TRUS. The study was carried out at the Urology Research Center, Razi Hospital, Guilan University of Medical Sciences (Rasht, Iran) from March to October 2010. Both methods were performed in one session by the same experienced radiologist. Data were analyzed using Pearson correlation coefficient and Bland-Altman method. Results Total prostate volume estimated by TAUS and TRUS were 50.30±23 and 50.73±24.6 mL, respectively. The limits of agreement for the total prostate volume were -6.86/9.84 that was larger than predefined clinical acceptable margin of 5 mL. Conclusion There is a lack of agreement between TAUS and TRUS for estimating the total prostate volume. It is not recommended to apply TAUS instead of TRUS for estimating prostate volume. PMID:25650064

Babaei Jandaghi, Ali; Shakiba, Maryam; Nasseh, Hamidreza; Korouji, Yaser; Esmaeili, Samaneh; Khadem Maboudi, Ali Akbar; Khorshidi, Ali

2015-01-01

321

Vascular Waveform Analysis of Flap-Feeding Vessels Using Color Doppler Ultrasonography  

PubMed Central

We performed vascular waveform analysis of flap-feeding vessels using color Doppler ultrasonography and evaluated the blood flow in the flaps prior to surgery. Vascular waveform analysis was performed in 19 patients. The analyzed parameters included the vascular diameter, flow volume, flow velocity, resistance index, pulsatility index, and acceleration time. The arterial waveform was classified into 5 types based on the partially modified blood flow waveform classification reported by Hirai et al.; in particular, D-1a, D-1b, and D-2 were considered as normal waveforms. They were 4 patients which observed abnormal vascular waveform among 19 patients (D-4?:?1, D-3?:?1, and Poor detect?:?2). The case which presented D-4 waveform changed the surgical procedure, and a favorable outcome was achieved. Muscle flap of the case which presented D-3 waveform was partially necrosed. The case which detected blood flow poorly was judged to be the vascular obstruction of the internal thoracic artery. In the evaluation of blood flow in flaps using color Doppler ultrasonography, determination of not only basic blood flow information, such as the vascular distribution and diameter and flow velocity, but also the flow volume, vascular resistance, and arterial waveform is essential to elucidate the hemodynamics of the flap. PMID:24804093

Onishi, Kiyoshi

2014-01-01

322

Contrast-enhanced ultrasonography of hepatocellular carcinoma: correlation between quantitative parameters and histological grading  

PubMed Central

Objective The quantitative parameters in the contrast-enhanced ultrasonography time–intensity curve of hepatocellular carcinoma (HCC) were studied to explore their possible implication for histological grading of HCC. Methods A total of 130 HCC patients (115 males and 15 females; age: 48.13±11.00 years) were studied using contrast-enhanced ultrasonography time–intensity curve and histological pathology. The quantification software Sonoliver® (TomTec Imaging Systems, Unterschleissheim, Germany) was applied to derive time–intensity curves of regions of interest in the interior of HCCs and in reference. Quantitative parameters of 115 patients were successfully obtained, including maximum of intensity (IMAX), rise time (RT), time to peak (TTP), rise slope (RS) and washout time (WT). Histological grading of HCC was performed using haematoxylin–eosin staining, and monoclonal antibodies specific for smooth muscle actin were used to observe unpaired arteries (UAs). Results There were significant differences among WTs in the three differentiated HCC groups (p<0.05). However, there were no significant differences among RT, TTP, RS and IMAX in the differentiated HCC groups. Moreover, the number of UAs in the differentiated HCC groups showed no statistical significance. Conclusion WT plays an important role in predicting well, moderately and poorly differentiated HCC. PMID:22096225

Pei, X Q; Liu, L Z; Liu, M; Zheng, W; Han, F; Li, A H; Cai, M Y

2012-01-01

323

Duplex ultrasonography in diagnosis of spigelian hernia with incarcerated jejunal loop.  

PubMed

Spigelian hernia is a very rare anterior abdominal wall hernia with uncharacteristic symptoms and challenging diagnosis. The case of a 76-year-old male patient with colicky pain and vomiting lasting for 24 hours before admission to the hospital is presented. Physical examination of the patient revealed abdominal tenderness and a round-shaped tumefaction of 3 cm in size, located in the left lower abdominal quadrant. X-ray examination of the abdomen, obtained in left lateral position of the patient, showed small bowel ileus with distended jejunal loops. The abdominal ultrasound examination, followed by duplex ultrasonography, revealed a spigelian hernia with ischemic changes of strangulated bowel segment indicating incarceration of the herniated jejunal loop. Preoperative findings were confirmed by intraoperative diagnosis of spigelian hernia and incarcerated jejunal loop with ischemic changes and deserosation, followed by resection of the bowel segment involved and plastic surgical reconstruction of anterior abdominal wall. This case report highlights the role of duplex ultrasonography in the evaluation of circulatory status of potentially incarcerated bowel segment within hernial sac. PMID:12398029

Buljevac, M; Grgurevi?, I; Lackovi?, Z; Kujundzi?, M; Bani?, M

2001-01-01

324

Portable duplex ultrasonography: A diagnostic and decision-making tool in reconstructive microsurgery.  

PubMed

Unidirectional Doppler is a common diagnostic tool by the Reconstructive Microsurgeons; however, it may generate false signals and surely provides less imaging data as compared to duplex ultrasonography. We have reviewed the use of Portable Duplex Ultrasonography (PDU) in 16 patients who underwent complex soft-tissue/bone reconstruction, aiming to determine its role in the design and management of free tissue transfer. According to our data, there were modifications either of the surgical plan and/or of patient's management, based on PDU findings, in 10 out of 16 patients (62.5%). The use of ultrasound directed to subtle modifications in three patients (19%), but to significant changes of the surgical plan in four patients (25%). Also, the use of ultrasound improved significantly the postoperative management in three patients (19%). Thus, significant impact of PDU in patient's treatment was recorded in 44% of cases. Portable ultrasound represents generally available method for preoperative, intraoperative, and postoperative diagnosis and decision-making in free tissue transfer, hence could replace in the near future the unidirectional Doppler in the hands of Microsurgeons. PMID:20058299

Gravvanis, Andreas; Karakitsos, Dimitrios; Dimitriou, Vasilios; Zogogiannis, Ioannis; Katsikeris, Nick; Karabinis, Andreas; Tsoutsos, Dimosthenis

2010-07-01

325

Ultrasonography: can it differentiate between vasoocclusive crisis and acute osteomyelitis in sickle cell disease?  

PubMed

We prospectively evaluated the results of ultrasonography in 53 patients of sickle cell disease suspected to have vasoocclusive crisis/acute hematogenous osteomyelitis. The average age was 8.4 +/- 3.40 years (range, 1-14). Twenty-six children were boys and 27 were girls. Seventeen (32%) patients had ultrasonographic changes that suggested acute osteomyelitis. The minimal white cell count was 7,200/mm3, and maximal, 9,900/mm3 (mean, 8,190/mm3) in uninfected patients and in 17 patients, the mean was 10,300/mm3 (7,200-13,600/mm3). The mean erythrocyte sedimentation rate in uninfected patients was 32 for the first hour (19-36 mm), and in infected patients, it was 43 for the first hour (35-38 mm). Pus culture was positive in all infected patients, and the infective organism was Salmonella enteriditis in eight, staphylococcal species in six (S. aureus in four and S. epidermidis in two), and Streptococcus species 1 and 2, anaerobic streptococci. All patients with vasoocclusive crisis were treated with analgesics and intravenous fluids and did not require any further treatment. In patients with acute osteomyelitis, the treatment was incision, drainage and drilling of bone, and antibiotic therapy. We conclude that ultrasonography clearly and decisively differentiated acute osteomyelitis from vasoocclusive crisis in patients with sickle cell disease. PMID:9661872

Sadat-Ali, M; al-Umran, K; al-Habdan, I; al-Mulhim, F

1998-01-01

326

Effect of Ultrasonography-Guided Botulinum Toxin Type A Injection in Holmes' Tremor Secondary to Pontine Hemorrhage: Case Report  

PubMed Central

Holmes' tremor is a low-frequency rest and intentional tremor secondary to various insults, including cerebral ischemia, hemorrhage, trauma, or neoplasm. Pharmacologic treatment is usually unsuccessful, and some cases require surgical intervention. We report a rare case of Holmes' tremor secondary to left pontine hemorrhage in a 29-year-old Asian male patient who developed 1.6-Hz postural and rest tremor of the right hand. He responded markedly to ultrasonography-guided botulinum toxin type A injection. To our knowledge, this is the first report of Homes' tremor treated with ultrasonography-guided botulinum toxin type A injection with favorable results. PMID:25379500

Ahn, So-Yeon; Kim, Dong-A; Park, Youn-Ok

2014-01-01

327

Ultrasonographic measurement of lower uterine segment to assess risk of defects of scarred uterus  

Microsoft Academic Search

SummaryBackground Ultrasonography has been used to examine the scarred uterus in women who have had previous caesarean sections in an attempt to assess the risk of rupture of the scar during subsequent labour. The predictive value of such measurements has not been adequately assessed, however. We aimed to evaluate the usefulness of sonographic measurement of the lower uterine segment before

P Rozenberg; F Goffinet; H. J Philippe; I Nisand

1996-01-01

328

Use of Audible and Chart-recorded Ultrasonography to Monitor Fetal Heart Rate and Uterine Blood Flow Parameters in Cattle  

Technology Transfer Automated Retrieval System (TEKTRAN)

The objective of the present study was to evaluate the use of audible chart-recorded doppler ultrasonography (DUS) to monitor both uterine blood flow and fetal heart rate (FHR) during pregnancy in dairy cattle. Possible applications of DUS include the monitoring of fetal distress when a pregnancy be...

329

[Ultrasonography, laparoscopy, neoplastic markers--new possibilities of conservative operative treatment for ovarian neoplasms in girls and young women].  

PubMed

The knowledge of ovarian physiopathology and the employing of modern diagnostic methods (ultrasonography, laparoscopy) allow to avoid to operate patients with functional cysts. Girls and young women should be evaluated individually for ovarian surgical procedures. The operative treatment should be so conservative as possible employing all diagnostic and monitoring methods including specific markers assays. PMID:8375700

Rzepka-Górska, I; Uzar, A; Zó?towski, S; Malecha, J; Menkiszak, J; Bedner, R; Kosmowska, B

1993-06-01

330

Selection of Superior Scanning Methods for A- and B-Scan Ultrasonography of the Eye and Orbit  

Microsoft Academic Search

In order to ascertain the most suitable B-scanning technique for ultrasonography of the eye and orbit, a schematic eye was constructed for calculating the results of sound refraction. The beamdeflections were calculated for linear (parallel), sector, and arc (circle section) scan. Extended experimental meridional measurements confirmed the results of these calculations. arc scans proved unequivocally superior to all other modes

W. Buschmann; R. Klopp; B. Seefeld

1971-01-01

331

Study on histopathology, ultrasonography and some special serum enzymes and collagens for 38 advanced patients of schistosomiasis japonica  

Microsoft Academic Search

Thirty-eight cases clinically diagnosed as advanced schistosomiaisis were subject to splenectomy in Dongzhi County Special Hospital for Schistosomiasis because of portal hypertension, splenomegaly and\\/or hypersplenism. Liver biopsy was undertaken in all cases during surgical intervention. Before operation, ultrasonography on the liver and spleen was carried out. Also done was biochemical assay on several indices related to liver damage and fibrosis.

Shen Guangjin; Jiao Mingdao; Li Qiyang; Xu Hui; Han Jiangming; Yin Xiaomei

2002-01-01

332

Ultrasonography shows increased cross-sectional area of the median nerve in patients with arthritis and carpal tunnel syndrome  

Microsoft Academic Search

Objectives. To examine whether patients with arthritic diseases and carpal tunnel syndrome (CTS) have increased cross- sectional areas of the median nerves measured by ultrasonography (US). Enlarged cross-sectional areas have previously been found in non-arthritic patients with idiopathic CTS. Methods. During 1 yr, all 12 patients with rheumatoid arthritis (RA) or other arthritic diseases hospitalized in our department for surgery

H. B. Hammer; I. A. H. Hovden; E. A. Haavardsholm; T. K. Kvien

2005-01-01

333

Continuous transcranial Doppler ultrasonography and electroencephalography during carotid endarterectomy: A multimodal monitoring system to detect intraoperative ischemia  

Microsoft Academic Search

Transcranial Doppler ultrasonography (TCD) and EEG monitoring during carotid endarterectomy provide continuous information on the electrical activity of the cerebral cortex, blood flow velocities in the ipsilateral middle cerebral artery, and the occurrence of microemboli. One hundred thirty carotid endarterectomies performed with TCD and EEG monitoring were studied prospectively. During cross-clamping of the carotid artery a high correlation was found

Cees Jansen; Frans L. Moll; Freddie E. E. Vermeulen; Johanna M. P. I. van Haelst; Rob G. A. Ackerstaff

1993-01-01

334

Imaging of transplanted islets by positron emission tomography, magnetic resonance imaging, and ultrasonography  

PubMed Central

While islet transplantation is considered a useful therapeutic option for severe diabetes mellitus (DM), the outcome of this treatment remains unsatisfactory. This is largely due to the damage and loss of islets in the early transplant stage. Thus, it is important to monitor the condition of the transplanted islets, so that a treatment can be selected to rescue the islets from damage if needed. Recently, numerous trials have been performed to investigate the efficacy of different imaging modalities for visualizing transplanted islets. Positron emission tomography (PET) and magnetic resonance imaging (MRI) are the most commonly used imaging modalities for this purpose. Some groups, including ours, have also tried to visualize transplanted islets by ultrasonography (US). In this review article, we discuss the recent progress in islet imaging. PMID:24231367

Sakata, Naoaki; Yoshimatsu, Gumpei; Tsuchiya, Haruyuki; Aoki, Takeshi; Mizuma, Masamichi; Motoi, Fuyuhiko; Katayose, Yu; Kodama, Tetsuya; Egawa, Shinichi; Unno, Michiaki

2013-01-01

335

Prenatal diagnosis of truncus arteriosus using multiplanar display in 4D ultrasonography  

PubMed Central

Prenatal diagnosis of truncus arteriosus with two-dimensional (2D) sonography requires expertise in fetal echocardiography. Indeed, truncus arteriosus shares with tetralogy of Fallot and pulmonary atresia with a ventricular septal defect (VSD) the sonographic finding of a single arterial trunk overriding a VSD. The diagnosis of truncus arteriosus can be confirmed when either the main pulmonary artery or its branches are visualized arising from the truncus itself. This requires sequential examination of multiple scanning planes and a process of mental reconstruction of their spatial relationships. The advantage of multiplanar imaging in three-dimensional and four-dimensional ultrasonography is that it allows for the simultaneous visualization of three orthogonal anatomic planes, which can be very important in diagnosing cardiac abnormalities. We report, first, a case of truncus arteriosus diagnosed in utero where the multiplanar display modality provided important insight into the differential diagnosis of this conotruncal anomaly, and then, review the diagnosis of truncus arteriosus on ultrasound. PMID:19900032

Gotsch, Francesca; Romero, Roberto; Espinoza, Jimmy; Kusanovic, Juan Pedro; Erez, Offer; Hassan, Sonia; Yeo, Lami

2012-01-01

336

Fusion imaging of real-time ultrasonography with CT or MRI for hepatic intervention.  

PubMed

With the technical development of ultrasonography (US), electromagnetic tracking-based fusion imaging of real-time US and computed tomography/magnetic resonance (CT/MR) images has been used for percutaneous hepatic intervention such as biopsy and radiofrequency ablation (RFA). Because of the fusion imaging technique, the fused CT or MR images show the same plane and move synchronously while performing real-time US. With this information, fusion imaging can enhance lesion detectability and reduce the false positive detection of focal hepatic lesions with poor sonographic conspicuity. Three-dimensional US can also be fused with realtime US for the percutaneous RFA of liver tumors requiring overlapping ablation. When fusion imaging is not sufficient for identifying small focal hepatic lesions, contrast-enhanced US can be added to fusion imaging. PMID:25036756

Lee, Min Woo

2014-10-01

337

Current methods of analgesia for transrectal ultrasonography (TRUS)-guided prostate biopsy -- a systematic review.  

PubMed

Transrectal ultrasonography (TRUS)-guided prostate biopsy is the most commonly used method of sampling prostate tissue for the diagnosis of prostate cancer. The technique is well recognised to potentially cause severe pain and discomfort for patients and this has led to numerous attempts to devise ways to minimise these problems. This systematic review summarises the techniques that have been described to date, with special reference to studies using either a visual analogue or numerical analogue scale to report outcomes. Commonly used approaches that are effective to minimise pain or discomfort include intravenous sedoanalgesia, inhalational agents and periprostatic infiltration of local anaesthetic. Whilst diclofenac suppositories are more effective than placebo, intra-rectal local anaesthetic gels appear to be of no benefit. Performing TRUS-guided prostate biopsy without any form analgesia is not appropriate. PMID:24053451

Lee, Chanyang; Woo, Henry H

2014-03-01

338

Contrast Agent Ultrasonography before and after HIFU Treatment of Parathyroid Glands  

NASA Astrophysics Data System (ADS)

OBJECTIVES: To observe changes in the parathyroid tissue treated by extracorporeal HIFU. MATERIAL AND METHODS: 5 patients were treated for primary hyperparathyroidism by thermally ablating enlarged parathyroid glands using an external HIFU applicator. The treated glands were visualized with B-Mode and contrast enhanced ultrasonography (CEUS) before, 1 week and 4 weeks post HIFU. Serum iPTH, calcium, and phosphorus levels were monitored before and after the treatment. RESULTS: The initial results showed a correlation between contrast agent uptake of treated parathyroid tissue, the reduction of volume of the gland and the decrease of iPTH levels. CONCLUSIONS These results show it is possible to use CEUS to monitor the thermal ablation of parathyroid glands.

Kovatcheva, Roussanka; Arnaud, Françoise; Lacoste, François

2010-03-01

339

Fusion imaging of real-time ultrasonography with CT or MRI for hepatic intervention  

PubMed Central

With the technical development of ultrasonography (US), electromagnetic tracking-based fusion imaging of real-time US and computed tomography/magnetic resonance (CT/MR) images has been used for percutaneous hepatic intervention such as biopsy and radiofrequency ablation (RFA). Because of the fusion imaging technique, the fused CT or MR images show the same plane and move synchronously while performing real-time US. With this information, fusion imaging can enhance lesion detectability and reduce the false positive detection of focal hepatic lesions with poor sonographic conspicuity. Three-dimensional US can also be fused with realtime US for the percutaneous RFA of liver tumors requiring overlapping ablation. When fusion imaging is not sufficient for identifying small focal hepatic lesions, contrast-enhanced US can be added to fusion imaging. PMID:25036756

2014-01-01

340

Gabor-based anisotropic diffusion for speckle noise reduction in medical ultrasonography.  

PubMed

In ultrasound (US), optical coherence tomography, synthetic aperture radar, and other coherent imaging systems, images are corrupted by multiplicative speckle noise that obscures image interpretation. An anisotropic diffusion (AD) method based on the Gabor transform, named Gabor-based anisotropic diffusion (GAD), is presented to suppress speckle in medical ultrasonography. First, an edge detector using the Gabor transform is proposed to capture directionality of tissue edges and discriminate edges from noise. Then the edge detector is embedded into the partial differential equation of AD to guide the diffusion process and iteratively denoise images. To enhance GAD's adaptability, parameters controlling diffusion are determined from a fully formed speckle region that is automatically detected. We evaluate the GAD on synthetic US images simulated with three models and clinical images acquired in vivo. Compared with seven existing speckle reduction methods, the GAD is superior to other methods in terms of noise reduction and detail preservation. PMID:24977366

Zhang, Qi; Han, Hong; Ji, Chunhong; Yu, Jinhua; Wang, Yuanyuan; Wang, Wenping

2014-06-01

341

Transcervical Ultrasonography Is Feasible to Visualize and Evaluate Base of Tongue Cancers  

PubMed Central

Background Base of tongue (BOT) is a difficult subsite to examine clinically and radiographically. Yet, anatomic delineation of the primary tumor site, its extension to adjacent sites or across midline, and endophytic vs. exophytic extent are important characteristics for staging and treatment planning. We hypothesized that ultrasound could be used to visualize and describe BOT tumors. Methods Transcervical ultrasound was performed using a standardized protocol in cases and controls. Cases had suspected or confirmed BOT malignancy. Controls were healthy individuals without known malignancy. Results 100% of BOT tumors were visualized. On ultrasound BOT tumors were hypoechoic (90.9%) with irregular margins (95.5%). Ultrasound could be used to characterize adjacent site involvement, midline extent, and endophytic extent, and visualize the lingual artery. No tumors were suspected for controls. Conclusions Ultrasonography can be used to transcervically visualize BOT tumors and provides clinically relevant characteristics that may not otherwise be appreciable. PMID:24498138

Blanco, Ray Gervacio F.; Califano, Joseph; Messing, Barbara; Richmon, Jeremy; Liu, Jia; Quon, Harry; Neuner, Geoffrey; Saunders, John; Ha, Patrick K.; Sheth, Sheila; Gillison, Maura; Fakhry, Carole

2014-01-01

342

Does Contrast-Enhanced Cervical Ultrasonography Improve Preoperative Localization Results in Patients With Sporadic Primary Hyperparathyroidism?  

PubMed Central

Objective: Pre-operative localization studies are inevitable in patients with primary hyperparathyroidism (pHPT), who are eligible for focused or minimally invasive parathyroidectomy (MIP). High-resolution ultrasonography (US) in combination with planar 99mTc-Sestamibi-scintigraphy (MIBI) and additional single-photon emission computed tomography (SPECT) are the standard procedures to localize enlarged parathyroid glands. Our aim was to evaluate the practicability and significance of contrast-enhanced ultrasonography (CEUS) in patients with pHPT. Materials and Methods: All investigations were performed at the University Hospital Marburg. Totally, 25 patients with biochemical proven pHPT underwent preoperative US, MIBI/SPECT, and CEUS. For CEUS, a suspension of phospholipid-stabilized sulfur-hexafluoride (SF6) microbubbles in combination with a special 12 MHz linear US probe was used. All patients were investigated by two sonographers, who did not get to view the findings noted by the other. Finally, surgery was performed and histopathological results were obtained from 24 patients. Results: In 17 (68%) patients, US and MIBI/SPECT already raised suspicion of parathyroid lesions and all suspected lesions were reassessed by CEUS. However, no additional information was obtained using CEUS. Especially in eight patients with negative or inconsistent US and MIBI/SPECT results, CEUS did not provide additional information regarding the site of the suspected parathyroid adenoma. Overall, no side effects were observed using CEUS. Surgical cure was achieved in all patients. Conclusion: In this limited cohort of patients, no additional information could be obtained using the costly CEUS compared to results of US and MIBI/SPECT. PMID:23230546

Karakas, Elias; Kann, Susanne; Höffken, Helmut; Bartsch, Detlef Klaus; Celik, Ilhan; Görg, Christian; Pfestroff, Andreas

2012-01-01

343

Prostate biopsies guided by three-dimensional real-time (4-D) transrectal ultrasonography on a phantom: comparative study versus two-dimensional transrectal ultrasound-guided biopsies  

E-print Network

OBJECTIVE: This study evaluated the accuracy in localisation and distribution of real-time three-dimensional (4-D) ultrasound-guided biopsies on a prostate phantom. METHODS: A prostate phantom was created. A three-dimensional real-time ultrasound system with a 5.9MHz probe was used, making it possible to see several reconstructed orthogonal viewing planes in real time. Fourteen operators performed biopsies first under 2-D then 4-D transurethral ultrasound (TRUS) guidance (336 biopsies). The biopsy path was modelled using segmentation in a 3-D ultrasonographic volume. Special software was used to visualise the biopsy paths in a reference prostate and assess the sampled area. A comparative study was performed to examine the accuracy of the entry points and target of the needle. Distribution was assessed by measuring the volume sampled and a redundancy ratio of the sampled prostate. RESULTS: A significant increase in accuracy in hitting the target zone was identified using 4-D ultrasonography as compared to 2-D....

Long, Jean-Alexandre; Moreau-Gaudry, Alexandre; Troccaz, Jocelyne; Rambeaud, Jean-Jacques; Descotes, Jean-Luc

2007-01-01

344

The Validity of Ultrasonography-Guided Fine Needle Aspiration Biopsy in Thyroid Nodules 4 cm or Larger Depends on Ultrasonography Characteristics  

PubMed Central

Background The objective of this study was to evaluate the validity of fine needle aspiration biopsy (FNAB) according to ultrasonography (US) characteristics in thyroid nodules 4 cm and larger. Methods We retrospectively reviewed the cases of 263 patients who underwent thyroid surgery for thyroid nodules larger than 4 cm between January 2001 and December 2010. Results The sensitivity of US-FNAB was significantly higher in nodules with calcifications (micro- or macro-) than those without (97.9% vs. 87.% P<0.05). The accuracy of US-FNAB was higher in large thyroid nodules with US features suspicious of malignancy, such as a solid component, ill-defined margin, hypoechogenicity or marked hypoechogenicity, or any calcifications (micro- or macro-) compared to thyroid nodules with none of these features. Furthermore, the accuracy improved as the number of these features increased. The overall false negative rate (FNR) was 11.9%. The FNR of thyroid nodules that appeared benign on US, such as mixed nodules (7.7%) or nodules without calcification (9.8%), trended toward being lower than that of solid nodules (17.9%) or nodules with any microcalcification or macrocalcification (33.3%). In nodules without suspicious features of malignancy, the FNR of US-FNAB was 0% (0/15). Conclusion We suggest individualized strategies for large thyroid nodules according to US features. Patients with benign FNAB can be followed in the absence of any malignant features in US. However, if patients exhibit any suspicious features, potential false negative results of FNAB should be kept in mind and surgery may be considered.

Kim, Jin Hwa; Kim, Na Kyung; Oh, Young Lyun; Kim, Hye Jeong; Kim, Sang Yong; Chung, Jae Hoon

2014-01-01

345

Accuracy of axial length measurements from immersion B-scan ultrasonography in highly myopic eyes  

PubMed Central

AIM To evaluate the accuracy of axial length (AL) measurements obtained from immersion B-scan ultrasonography (immersion B-scan) for intraocular lens (IOL) power calculation in patients with high myopia and cataracts. METHODS Immersion B-scan, contact A-scan ultrasonography (contact A-scan), and the IOLMaster were used to preoperatively measure the AL in 102 eyes from 102 patients who underwent phacoemulsification and IOL implantation. Patients were divided into two groups according to the AL: one containing patients with 22 mm?AL<26 mm(group A) and the other containing patients with AL?26 mm (group B). The mean error (ME) was calculated from the difference between the AL measurement methods predicted refractive error and the actual postoperative refractive error. RESULTS In group A, ALs measured by immersion B-scan (23.48±1.15) didn't differ significantly from those measured by the IOLMaster (23.52±1.17) or from those by contact A-scan (23.38±1.20). In the same group, the standard deviation (SD) of the mean error (ME) of immersion B-scan (-0.090±0.397 D) didn't differ significantly from those of IOLMaster (-0.095±0.411 D) and contact A-scan (-0.099±0.425 D). In group B, ALs measured by immersion B-scan (27.97±2.21 mm) didn't differ significantly from those of the IOLMaster (27.86±2.18 mm), but longer than those measured by Contact A-scan (27.75±2.23 mm, P=0.009). In the same group, the standard deviation (SD) of the mean error (ME) of immersion B-scan (-0.635±0.157 D) didn't differ significantly from those of the IOLMaster (-0.679±0.359 D), but differed significantly from those of contact A-scan (-0.953±1.713 D, P=0.028). CONCLUSION Immersion B-scan exhibits measurement accuracy comparable to that of the IOLMaster, and is thus a good alternative in measuring AL in eyes with high myopia when the IOLMaster can't be used, and it is more accurate than the contact A-scan. PMID:24967188

Yang, Qing-Hua; Chen, Bing; Peng, Guang-Hua; Li, Zhao-Hui; Huang, Yi-Fei

2014-01-01

346

[Possibilities of radiologic methods (ultrasonography, computed tomography) in the preoperative evaluation of intramural invasion of gastric cancer].  

PubMed

By analyzing the findings in 72 patients with gastric cancer, the authors show the potentialities of noninvasive techniques of radiation diagnosis (transabdominal ultrasonography (USG) and X-ray computed tomography (CT) in the preoperative evaluation of the T-stage of gastric cancer. Ultrasound and computed tomographic semiotics of intramural invasion of gastric carcinoma is made. Ultrasonography was found to have the highest specificity in detecting early-stage gastric cancers prior to computed tomography. In the authors' opinion, a complex use of the data obtained by these techniques reveals the degree of invasion of gastric carcinoma and its extent with high precision. Transabdominal USG and CT should rank with the initial methods used for diagnosing gastric cancer. Transabdominal USG should be most expediently used as an initial technique of the above studies, by taking into account its wide accessibility, easiness-to-use, and lack of radiation load. PMID:11503175

Gorshkov, A N; Meshkov, V M; Gracheva, N I; Zaritskaia, V A

2001-01-01

347

Evaluation of immersion 20 MHz B-scan ultrasonography in observing lens in the alkali burn eyes  

PubMed Central

AIM To evaluate the accuracy of 20 MHz immersion B-scan ultrasonography in observing lens and to investigate the value of this noninvasive preoperative diagnosis method in alkali burn eyes. METHODS It was a comparative study. Fifty-six cases (56 eyes) of alkali burn eyes were examined by ultrasound biomicroscopy (UBM) and immersion 20 MHz B-scan ultrasonography from June 2011 to April 2013, the images were analyzed, and the ultrasonographic diagnosis compared with the operation results. RESULTS In 56 alkali burn eyes examined by UBM, the lens were not detected in 16 eyes; the IOL could be detected in 2 eyes; the anterior lens capsule surface or/and the front lens could be detected in 18 eyes, and lens opacification in 3 eyes of them; suspected abnormal lens were detected in the other 20 eyes. In all the same eyes examined by immersion 20 MHz B-scan ultrasonography, the lens were not detected in 16 eyes; the IOL could be detected in 2 eyes; 24 abnormal lens (opacity, lens expansion, shrinkage) and 14 normal lens were found. Compared with the intraoperative findings, the diagnostic accordance rate of the immersion 20 MHz B-scan appearance of lens was 100% (56/56), which was significantly higher than examined by UBM 57.14% (32/56) (?2=30.55, P=0.0000). CONCLUSION Immersion 20 MHz B-scan ultrasonography can observe the lens accurately in alkali burn eyes. It has important clinical value to combine with UBM in eyes of alkali burn. PMID:25161933

Yang, Qing-Hua; Chen, Bing; Wang, Li-Qiang; Peng, Guang-Hua; Li, Zhao-Hui; Huang, Yi-Fei

2014-01-01

348

Comparision between transrectal ultrasonography and computed tomography with rectal inflation of gas in preoperative staging of lower rectal cancer  

Microsoft Academic Search

.   Computed tomography with rectal air insufflation was compared with transrectal ultrasonography (TRUS) in 63 patients. The\\u000a CT protocol involved pre- and postcontrast scans with 5 mm slice thickness following air insufflation in IV antiperistaltic\\u000a agent. Of the patients, 79 % were scanned in the prone position. Results of the preoperative examinations were compared with\\u000a the histological findings. The CT

M. F. Osti; F. Scattoni Padovan; C. Pirolli; S. Sbarbati; V. Tombolini; C. Meli; R. Maurizi Enrici

1997-01-01

349

Molecular Imaging of Vascular Endothelial Growth Factor Receptor 2 Expression Using Targeted Contrast-Enhanced High-Frequency Ultrasonography  

PubMed Central

Objective The aim of our study was to investigate the use of targeted contrast-enhanced high-frequency ultrasonography for molecular imaging of vascular endothelial growth factor receptor 2 (VEGFR2) expression on tumor vascular endothelium in murine models of breast cancer. Methods Highly invasive metastatic (4T1) and nonmetatstatic (67NR) breast cancer cells were implanted in athymic nude mice. Tumors were examined in vivo with targeted contrast-enhanced high-frequency ultrasonography using a scanner with a 40-MHz probe. Randomized boluses of ultrasound contrast agents (UCAs) conjugated with an anti-VEGFR2 monoclonal antibody or an isotype control antibody (immunoglobulin G) were injected into the animals. Sonograms were analyzed by calculation of the normalized video intensity amplitudes caused by backscatter of the bound UCA. After ultrasonography, the tumor samples were harvested for analysis of VEGFR2 expression by immunoblotting and immunocytochemistry. Results The mean video intensity amplitude caused by backscatter of the retained VEGFR2-targeted UCA was significantly higher than that of the control UCA (mean ± SD: 4T1 tumors, 15 ± 3.5 versus 7 ± 1.6 dB; P < .01; 67NR tumors, 50 ± 12.3 versus 12 ± 2.6 dB; P < .01). There was a significant difference in VEGFR2-targeted UCA retention between 4T1 and 67NR tumors (normalized video intensity amplitudes, 15 ± 3.5 and 50 ± 12.3 dB, respectively; P < .001), and this correlated well with relative VEGFR2 expression in the two tumor types. Conclusions Targeted contrast-enhanced high-frequency ultrasonography may enable in vivo molecular imaging of VEGFR2 expression on the tumor vascular endothelium and may be used for noninvasive longitudinal evaluation of tumor angiogenesis in preclinical studies. PMID:17957052

Lyshchik, Andrej; Fleischer, Arthur C.; Huamani, Jessica; Hallahan, Dennis E.; Brissova, Marcela; Gore, John C.

2009-01-01

350

Prostate cancer detection in a clinical urological practice by ultrasonography, digital rectal examination and prostate specific antigen  

Microsoft Academic Search

The prostate cancer detection rate from screening by digital rectal examination and tactilely guided prostate biopsy is approximately 1.7%. Among 1,807 men a detection rate of 14.6% was achieved in a clinical urological practice by physician-conducted prostate ultrasonography, digital rectal examination and determination of serum prostate specific antigen. Results are presented in 5-year increments as well as for the group

William H. Cooner; B. R. Mosley; Charles L. Rutherford; Jeff H. Beard; Harry S. Pond; William J. Terry; Todd C. Igel; Donald D. Kidd

2002-01-01

351

A comparative study on the diagnostic utility of ultrasonography with conventional radiography and computed tomography scan in detection of zygomatic arch and mandibular fractures  

PubMed Central

Objectives: The objective of the following study is to evaluate the usefulness of ultrasonography (USG) in comparison with conventional radiography and computed tomography (CT) scan in the diagnosis of zygomatic arch and mandibular fractures. Materials and Methods: A total of 40 patients with suspected fracture of the zygomatic arch and/or mandibular fractures were included in the study. Two groups (one for zygomatic arch fractures and the other for mandibular fractures) of 20 patients each were designed for the study. Ultrasonographic examinations were performed using small linear probe (LA435, Siemens Acuson Antares) with 10 MHz frequency. Data from CT and conventional radiography were compared with that of USG. Results: Sensitivity and specificity of USG in assessing zygomatic arch fractures were 100% and 100%, respectively; and that of mandibular fractures were 94.74% and 100%, respectively. Overall sensitivity, specificity, positive predictive value, and negative predictive value of USG against CT in diagnosing zygomatic arch and mandibular fractures were found out to be 97.4%, 100%, 100%, and 66.7%, respectively. Conclusion: USG is a very reliable tool in detection of fractures involving zygomatic arch and mandible. It can be used for screening of suspected fractures of zygomatic arch and mandible to avoid unnecessary radiation exposure from conventional radiography and CT scans. PMID:24963239

Singh, Koijam Sashikumar; Jayachandran, S.

2014-01-01

352

Limitations of fetal ultrasonography and magnetic resonance imaging in prenatal diagnosis of congenital cerebral arteriovenous malformations with hemorrhagic onset.  

PubMed

A fetus at 30 gestational weeks was observed on fetal ultrasonography to have a dilated right lateral ventricle. After delivery, the entity was diagnosed as a prenatal intracerebral hemorrhage (ICH) due to a ruptured arteriovenous malformation (AVM). Ultrasonography and MRI examinations performed before birth indicated a cerebral aneurysm in the territory of the right middle cerebral artery. However, digital subtraction angiography revealed an intracystic hemorrhage due to a ruptured cerebral AVM. Arteriovenous malformations in children are rare, difficult to diagnose, and result in permanent sequelae after delayed treatment. Patient prognosis depends on early and accurate diagnosis and intervention. Outcomes can be improved if an AVM in a child is detected at the onset of ICH for young infants in the prenatal or early postnatal periods. Early AVM diagnosis is limited to fetal ultrasonography and MRI, and special consideration through invasive examination including neonatal digital subtraction angiography is urged unless a correct and clear diagnosis is made at an early stage. Prenatal ICH due to an AVM is rare. The authors discuss their observations and findings. PMID:22725727

Eguchi, Seiichiro; Aihara, Yasuo; Yamaguchi, Kohji; Okada, Yoshikazu

2012-08-01

353

Is endoscopic ultrasonography still the modality of choice in preoperative staging of gastric cancer?  

PubMed Central

The treatment option for gastric cancer is usually based on preoperative staging by imaging modalities. Endoscopic ultrasonography (EUS) and computed tomography (CT) have been used as the diagnostic modality of choice in preoperative staging of gastric cancer. Magnetic resonance imaging (MRI) has been employed in several studies, and (18F) 2-Fluoro-2-deoxyglucose (FDG) positron emission tomography (PET) has emerged as a new promising imaging modality. The purpose of this article is to provide summarized information on preoperative staging using EUS, multi-detector row CT (MDCT), MRI and PET for gastric cancer. In T staging, both EUS and MDCT show high accuracy. MRI seemed to have better performance, but the number of MRI studies is limited. FDG-PET is not able to properly evaluate the depth of invasion. In N staging, the diagnostic accuracy of EUS, MDCT and MRI is not sufficient. In preoperative M staging, MDCT and FDG-PET showed similar diagnostic accuracies. FDG-PET/CT fusion could be expected to show better performance in the future. Physicians should keep in mind that each diagnostic modality has advantages and limitations and choose an appropriate diagnostic strategy tailored for each patient. PMID:25320515

Hwang, Sung Wook; Lee, Dong Ho

2014-01-01

354

Sensitivity of hepatobiliary imaging and real-time ultrasonography in the detection of acute cholecystitis  

SciTech Connect

To determine the sensitivity of hepatobiliary imaging (HBI) and strict- and liberal-criteria real-time ultrasonography (RTUS), the authors retrospectively analyzed 100 cases of pathologically proved acute cholecystitis (AC). A positive HBI was one in which there was nonvisualization of the gallbladder up to four hours after the administration of technetium 99m-disofenin. In the absence of hypoalbuminemia, cirrhosis, or ascites, pathognomonic RTUS findings (strict criteria) for AC were wall edema and/or pericholecystic fluid. Findings indicative of AC (liberal criteria) included the demonstration of stones, a thick gallbladder wall, nonshadowing echoes, or the ultrasonographic Murphy's sign. Of the 100 cases of AC, 91 were calculous, and nine were acalculous. Four of 100 patients had associated choledocholithiasis. The sensitivities in detecting calculous AC were as follows: HBI, 97%; liberal-criteria RTUS, 86%; and strict-criteria RTUS, 24%. The sensitivities in detecting acalculous AC were as follows: HBI, 100%; liberal-criteria RTUS, 89%; and strict-criteria RTUS, 44%.

Fink-Bennett, D.; Freitas, J.E.; Ripley, S.D.; Bree, R.L.

1985-08-01

355

Fetal age estimation of Hokkaido sika deer (Cervus nippon yesoensis) using ultrasonography during early pregnancy.  

PubMed

In sika deer, the normal method of estimating fetal age, based on fetal weight, is not applicable during the early pregnancy period. The objective of the present study was to describe the growth and development of sika deer fetuses and to establish a method for fetal age estimation during early pregnancy using ultrasonography. Five captive female Hokkaido sika deer (Cervus nippon yesoensis) were observed for estrus and mated (day 0) with an intact male. At two- or three-day intervals, fetuses were observed by rectal ultrasonographic scans until 59-61 days of gestation. The straight crown-rump length (SCRL), curved crown-rump length (CCRL), head length (HL), trunk depth (TD) and heart rate (HR) of the fetuses were measured. Linear regression equations were computed for each measurement together with fetal age. Analyses were conducted after transformation to a natural logarithm for SCRL and CCRL. All equations were significant (P<0.001), with SCRL becoming measurable earlier (day 20) than the others and yielding the best correlation (Days= -2.08+14.15 LnX: X=SCRL, Ln=natural logarithm). Therefore, we concluded that a precise estimation of fetal age in early gestation is best performed using SCRL measurements. PMID:19106485

Yanagawa, Yojiro; Matsuura, Yukiko; Suzuki, Masatsugu; Saga, Shin-ichi; Okuyama, Hideto; Fukui, Daisuke; Bandou, Gen; Katagiri, Seiji; Takahashi, Yoshiyuki; Tsubota, Toshio

2009-04-01

356

Current status and future applications of contrast-enhanced endoscopic ultrasonography  

PubMed Central

Endoscopic ultrasonography (EUS) is currently an integral investigation of many gastrointestinal disorders. It has been shown to have a higher efficacy than conventional computed tomography in detection and characterization of small lesions especially in the pancreas. Much effort has been put to further improve the sensitivity, specificity and overall accuracy of EUS. One of the major advances is the utilization of contrast agents for better delineation of the vascularity and tissue perfusion of the target lesion. This article describes the basic principles of ultrasound contrast agents and the different modalities used in contrast-enhanced EUS (CE-EUS) including contrast-enhanced Doppler EUS (CED-EUS) and contrast-enhanced harmonic EUS (CEH-EUS). In addition, the current applications of contrast enhanced EUS in different gastrointestinal conditions were discussed. Furthermore, the future development of hybrid approaches combining CE-EUS with other imaging modalities and the potential therapeutic aspect of using it as a vector for drug delivery were also discussed. PMID:24748919

Yip, Hon Chi; Teoh, Anthony Yuen Bun; Chong, Charing Ching Ning; Lau, James Yun Wong

2014-01-01

357

Application of contrast-enhanced intraoperative ultrasonography in the decision-making about hepatocellular carcinoma operation  

PubMed Central

AIM: To evaluate the detection and differentiation ability of contrast-enhanced intraoperative ultrasonography (CE-IOUS) in hepatocellular carcinoma (HCC) operations. METHODS: Clinical data of 50 HCC patients were retrospective analyzed. The sensitivity, specificity, false negative and false positive rates of contrast enhanced magnetic resonance imaging (CE-MRI), IOUS and CE-IOUS were calculated and compared. Surgical strategy changes due to CE-IOUS were analyzed. RESULTS: Lesions detected by CE-MRI, IOUS and CE-IOUS were 60, 97 and 85 respectively. The sensitivity, specificity, false negative rate, false positive rate of CE-MRI were 98.2%, 98.6%, 98.6%, 60.0%, respectively; for IOUS were 50.0%, 90.9%, 1.8%, 1.4%, respectively; and for CE-IOUS were 1.4%, 40.0%, 50.0%, 9.1%, respectively. The operation strategy of 9 (9/50, 18.0%) cases was changed according to the results of CE-IOUS. CONCLUSION: Compared with CE-MRI, CE-IOUS performs better in detection and differentiation of small metastasis and regenerative nodules. It plays an important role in the decision-making of HCC operation. PMID:20101780

Wu, Hong; Lu, Qiang; Luo, Yan; He, Xian-Lu; Zeng, Yong

2010-01-01

358

UltraFast Doppler ultrasonography for hepatic vessels of liver recipients: preliminary experiences  

PubMed Central

Purpose: The purpose of this study was to investigate the value of UltraFast Doppler ultrasonography (US) for evaluating hepatic vessels in liver recipients. Methods: Thirty-nine liver Doppler US sessions were conducted in 20 liver recipients. Each session consisted of UltraFast and conventional liver Doppler US in a random order. We compared the velocities and phasicities of the hepatic vessels, duration of each Doppler study, occurrence of technical failures, and differences in clinical decisions. Results: The velocities and resistive index values of hepatic vessels showed a strong positive correlation between the two Doppler studies (mean R=0.806; range, 0.710 to 0.924). The phasicities of the hepatic vessels were the same in both Doppler US exams. With respect to the duration of the Doppler US exam, there was no significant difference between the UltraFast (251±99 seconds) and conventional (231±117 seconds) Doppler studies (P=0.306). In five poor breath-holders, in whom the duration of conventional Doppler US was longer, UltraFast Doppler US (272±157 seconds) required a shorter time than conventional Doppler US (381±133 seconds; P=0.005). There was no difference between the two techniques with respect to technical failures and clinical decisions. Conclusion: UltraFast Doppler US is clinically equivalent to conventional Doppler US with advantages for poor breath-holders during the post-liver transplantation work-up. PMID:25409662

2015-01-01

359

Usefulness of contrast-enhanced ultrasonography in the diagnosis of ruptured hepatocellular carcinoma.  

PubMed

The identification of bleeding sites of ruptured hepatocellular carcinoma (HCC) is important for immediate treatment. We experienced a case of ruptured HCC readily treated with transarterial embolization (TAE) after identification of the bleeding site using contrast-enhanced ultrasonography (CEUS) with Sonazoid. We report the case of a 61-year-old male with multiple HCCs caused by alcohol-related cirrhosis, who was admitted for rapid development of abdominal fullness. The diagnosis was established by hemorrhagic ascites by abdominal paracentesis. No clear extravasation was found on contrast-enhanced computed tomography. CEUS using the re-injection method in the post-vascular phase showed active bleeding from a lesion close to the S5 gallbladder bed. Abdominal angiography was urgently performed. Based on CEUS findings, selective cannulation of the cystic artery was performed. Cystic angiography findings with carbon dioxide showed extravasation. He was treated by TAE. Our case had multiple HCCs, but CEUS was useful for the identification of bleeding sites. PMID:23990851

Shiozawa, Kazue; Watanabe, Manabu; Ikehara, Takashi; Matsukiyo, Yasushi; Ishii, Koji; Igarashi, Yoshinori; Sumino, Yasukiyo

2013-01-01

360

Relationship between preoperative staging by endoscopic ultrasonography and MMP-9 expression in gastric carcinoma  

PubMed Central

AIM: To investigate the relationship between the staging by endoscopic ultrasonography (EUS) and the expression of carcinoma metastasis associated gene in the patients with gastric carcinoma. METHODS: Sixty-three patients with gastric cancer were diagnosed by electric gastroscopy and EUS. The preoperative staging of gastric cancer was measured by EUS and compared with pathologic staging and MMP-9 expression. Peripheral serum level of MMP-9 was measured with enzyme-linked immunosorbent assay (ELISA), while the expression of MMP-9 protein was tested with immunohistochemistry and hybridization in situ in the gastric carcinoma tissues. RESULTS: The total accuracy of EUS in estimating invasive depth of gastric cancer was 80.95%, while that in estimating lymphatic metastasis was 73.02%. Serum MMP-9 levels were consistent with the expression of MMP-9 protein and MMP-9 mRNA in tissue, a result closely correlated with invasive degree, staging with EUS and lymphatic metastasis in gastric cancer (P < 0.05). The total accuracy of estimating invasive depth in gastric cancer was 95.22% using both EUS and MMP-9. CONCLUSION: The MMP-9 level of preoperative serum presents the reference value for preoperative staging by EUS in the patients with gastric cancer. When serum MMP-9 level in gastric cancer is significantly high, physicians should pay closer attention to the metastasis which reaches the serosa or beyond. Combining EUS and MMP-9 improves the accuracy in deciding the invasion and metastasis in the patients with gastric carcinoma. PMID:17465457

Tan, Shi-Yun; Wang, Jun-Yu; Shen, Lei; Luo, He-Sheng; Shen, Zhi-Xiang

2007-01-01

361

Piriformis muscle injection using ultrasonography and motor stimulation--report of a technique.  

PubMed

The piriformis muscle syndrome has been described in the literature since 1947 and accounts for 6-8% of patients presenting with buttock pain, which may variably be associated with sciatica. Through the years, there have been attempts to find safe and effective ways of managing this condition, whether through conservative treatment or with the use of interventional procedures. Several authors have reported injection techniques using the following: nerve stimulation; fluoroscopy with electromyography; and fluoroscopy with muscle stimulation. We aim to describe an injection method which is effective, simple, reproducible, easily available, and safe. This is the first report on the combined use of ultrasonography and motor stimulation in performing piriformis muscle injection. Our technique offers advantages such as: markedly decreased radiation exposure for both patient and doctor; improved visualization of sciatic nerve and surrounding muscles; improved portability; the possibility of being performed as an office-based procedure; and allows for an accurate confirmation of pain in the piriformis muscle with stimulation. PMID:17876366

Huerto, Antonio P S; Yeo, Sow Nam; Ho, Kok Yuen

2007-09-01

362

Endoscopic ultrasonography in patients with elevated carbohydrate antigen 19-9 of obscure origin  

PubMed Central

AIM: To evaluate the efficacy of endoscopic ultrasonography (EUS) in patients with elevated carbohydrate antigen (CA) 19-9 levels of obscure origin. METHODS: Patients who had visited Pusan National University Hospital because of elevated serum CA 19-9 levels, between January 2007 and December 2009, were retrospectively enrolled. EUS had been performed on all subjects, in addition to routine blood tests, endoscopy, abdominal computed tomography (CT) and other clinical exams, which had not revealed any abnormal findings suggestive of the origin of the elevated CA 19-9 levels. RESULTS: Of the 17 patients, gallbladder sludge was detected in 16 patients (94.1%) and common bile duct sludge was observed in 3 patients (17.6%). After the administration of ursodeoxycholic acid to 12 of the patients with gallbladder sludge, CA 19-9 levels normalized in 6 of the patients after a median of 4.5 mo. CONCLUSION: EUS is a useful diagnostic method for patients with elevated CA 19-9 levels of obscure origin, even if the reason for abnormal levels of this serum marker cannot be determined through prior examinations, including abdominal CT. PMID:23678379

Cheong, Jae Hoon; Kim, Gwang Ha; Moon, Ji Yoon; Lee, Bong Eun; Ryu, Dong Yup; Kim, Dong Uk; Seo, Hyung-Il; Song, Geun Am

2013-01-01

363

Contrast-enhanced color Doppler ultrasonography increases diagnostic accuracy for soft tissue tumors.  

PubMed

Resolution of ultrasonography (US) has undergone marked development. Additionally, a new-generation contrast medium (Sonazoid) used for US is newly available. Contrast-enhanced US has been widely used for evaluating several types of cancer. In the present study, we evaluated the ability of color Doppler US (CDUS) and Sonazoid to differentiate between benign and malignant soft tissue tumors. A total of 180 patients (87 male, 93 female) were enrolled in the present study. The patient ages ranged from 1 to 91 years (mean 58.1±20.0 years). The maximum size, depth, tumor margins, shape, echogenicity and textural pattern were measured on gray-scale images. CDUS was used to evaluate the intratumoral blood flow with and without Sonazoid. Peak systolic flow velocity (Vp), mean flow velocity (Vm), resistivity index (RI) and pulsatility index (PI) of each detected intratumoral artery were automatically calculated with power Doppler US (PDUS). The present study included 118 benign and 62 malignant tumors. Statistical significances were found in size, depth, tumor margin and textural pattern but not in shape or echogenicity on gray-scale images. Before Sonazoid injection, CDUS findings showed 55% sensitivity, 77% specificity and 69% accuracy, whereas contrast-enhanced CDUS showed 87% sensitivity, 68% specificity and 74% accuracy. There were no statistically significant differences between malignant and benign tumors regarding the mean Vp, Vm, RI and PI values determined on PDUS. In conclusion, contrast-enhanced CDUS proved to be a reliable diagnostic tool for detecting malignant potential in soft tissue tumors. PMID:25109621

Oebisu, Naoto; Hoshi, Manabu; Ieguchi, Makoto; Takada, Jun; Iwai, Tadashi; Ohsawa, Masahiko; Nakamura, Hiroaki

2014-10-01

364

Contrast-enhanced ultrasonography: advance and current status in abdominal imaging  

PubMed Central

In the field of contrast-enhanced ultrasonography (US), contrast agents are classified as either first- or second-generation agents depending on the gas within the microbubbles. In the case of first-generation contrast agents, a high-mechanical-index technique is used and only intermittent scanning is possible due to the early destruction of the microbubbles during the scanning. The use of second-generation contrast agents in a low-mechanical-index technique enables continuous scanning. Besides the detection and characterization of focal liver lesions, contrastenhanced US is helpful in the monitoring of radiofrequency ablation therapy and in the targeting step of an US-guided biopsy. Recently, there has been a demand for new criteria to evaluate the treatment response obtained using anti-angiogenic agents because morphologic criteria alone may not reflect the treatment response of the tumor and contrast-enhanced US can provide quantitative markers of tissue perfusion. In spite of the concerns related to its cost-effectiveness, contrast-enhanced US has the potential to be more widely used as a complimentary tool or to substitute the current imaging modalities in some occasions. PMID:25342120

2015-01-01

365

Prediction of Vesicoureteral Reflux in Children with First Urinary Tract Infection by Dimercaptosuccinic Acid and Ultrasonography  

PubMed Central

Objective Urinary tract infection (UTI) is one of the most common causes of febrile pediatric diseases. Also, vesicoureteral reflux (VUR) is a significant risk factor for UTI. Voiding cystourethrography (VCUG) is the method of choice for evaluation of VUR. This study was done to predict VUR by DMSA scan (technetium 99 m-labeled dimercaptosuccinic acid) and ultrasonography (US). Methods In a prospective study, all children with first time acute pyelonephritis were selected and evaluated by DMSA scan and US. Then VCUG was done with negative urine culture. All children with final diagnosis of obstructive congenital anomaly were excluded. The sensitivity, specifity, positive predictive values, negative predictive values, Confidence Interval of DMSA scan and US were calculated for prediction or exclusion of VUR. Findings Among 100 children with UTI diagnosis, VUR was detected in 39 children and 63 (31.5%) kidneys. DMSA scan was abnormal in 103 (51.5%) units, 45 units had VUR (PPV=44%), 79 units with normal DMSA scan had no VUR (NPV=81%). Of kidney units that were abnormal by DMSA or US, 51 units had VUR. PPV and NPV were 44% and 56%, respectively. Conclusion DMSA scan alone or with US cannot predict VUR (especially low grade VUR). But according to NPV, it seems that absence of VUR can be predicted. So, more studies are needed to determine the usefulness of DMSA scan and US instead of VCUG for detection of VUR. PMID:23056860

Sorkhi, Hadi; Nooreddini, Haji-Ghorban; Amiri, Mehrangiz; Osia, Soheil; Farhadi-Niakee, Saeed

2012-01-01

366

Changes in Neck Muscle Thickness Due to Differences in Intermittent Cervical Traction Force Measured by Ultrasonography  

PubMed Central

[Purpose] Many patients receive intermittent cervical traction in a daily treatment setting. However, unified settings for traction force, duration, and direction have yet to be determined. Therefore, an objective index is required to determine changes in traction conditions or to indicate its effectiveness. [Subjects] Fifteen healthy males volunteers participated in this study. [Methods] The thickness of the trapezius and splenius capitis muscles before and during traction were measured using ultrasonography at three traction forces: 5, 8 and 11?kg. [Results] Significant differences in muscle thickness were observed at 11?kg in the trapezius, and at 8?kg and 11?kg in the splenius capitis muscles. The muscle thickness ratio of the trapezius muscle showed a significant difference between 11?kg and 5 and 8?kg, and between 5?kg and 8 and 11?kg, as well as between 8?kg and 11?kg for the splenius capitis muscles. [Conclusion] Differences in muscle direction between the trapezius and splenius capitis muscles may account for the contrasting results obtained at the 8?kg traction force. This finding suggests that cervical traction must be performed considering the effects on different neck regions. PMID:24926153

Kuniyasu, Katsushi

2014-01-01

367

Extraesophageal saline enhances endoscopic ultrasonography to differentiate esophagus and adjacent organs  

PubMed Central

AIM: To distinguish between the esophagus and adjacent organs using extraesophageal saline injection (ESI) in a canine model. METHODS: ESI was performed through the esophagus under the guidance of linear-array endoscopic ultrasonography (EUS). Approximately 15 mL of methylene blue saline (0.5%) was then injected through each of the extraesophageal puncture points using a 22 G needle. Radial EUS examinations were conducted before and after ESI. EUS images of the trachea, tracheal bifurcation, arcus aortae and thoracic aorta were recorded. Vital signs were monitored during the ESI procedure and EUS examination. The dogs were then sacrificed for exploratory thoracotomy. RESULTS: No obvious fluctuation in vital signs or serious adverse events occurred during the ESI procedure. On EUS imaging, an apparent hypoechoic area outside the esophagus, which separated the esophagus and adjacent organs, was visualized. The adventitious of the esophagus and adjacent organs were easily distinguished. The findings of subsequent exploratory thoracotomy confirmed the EUS findings: obvious accumulation of a blue liquid in the extraesophageal tissues, as well as in the esophageal-thoracic aorta space, esophageal-arcus aortae space and esophageal-tracheal space. CONCLUSION: The esophagus and adjacent organs were successfully separated by ESI, and extraesophageal saline acted as an effective ultrasonic contrast agent. PMID:25253957

Li, Jian-Jun; Shan, Hong-Bo; He, Long-Jun; Wang, Thomas D; Xiong, Huan; Chen, Li-Ming; Li, Xiao-Hai; Huang, Xin-Xin; Luo, Guang-Yu; Li, Yin; Xu, Guo-Liang

2014-01-01

368

Internal carotid artery dissection caused by an elongated styloid process: usefulness of transoral ultrasonography.  

PubMed

We report a case of internal carotid artery (ICA) occlusion caused by arterial dissection triggered by an elongated styloid process. A 43-year-old man presented with a headache followed by speech disturbance. Magnetic resonance imaging and magnetic resonance angiography scans revealed acute infarction and right ICA occlusion. A T1-weighted magnetic resonance imaging scan revealed a hyperintensity in the occluded ICA, suggesting intramural hematoma. Computed tomographic angiography also revealed ICA occlusion and bilateral elongated styloid processes. We performed transoral carotid ultrasonography, which revealed the absence of flow signal in the double lumen of the dilated extracranial ICA. We diagnosed his condition as arterial dissection and treated him with antithrombotic drugs. Six months later, the occluded ICA recanalized spontaneously, and computed tomographic angiography at that time revealed a close relation between the tip of the styloid process and the recanalized ICA. This finding suggests that an elongated styloid process is involved in arterial dissection. In patients with ICA occlusion of unknown etiology, an evaluation for intramural hematoma and styloid process length are useful for the diagnosis of dissection and its etiology. PMID:22748713

Ohara, Nobuyuki; Sakaguchi, Manabu; Okazaki, Shuhei; Nagano, Keiko; Kitagawa, Kazuo

2012-11-01

369

Early quantification of the therapeutic efficacy of the vascular disrupting agent, CKD-516, using dynamic contrast-enhanced ultrasonography in rabbit VX2 liver tumors  

PubMed Central

Purpose: To evaluate the usefulness of dynamic contrast-enhanced ultrasonography (DCE-US) in the early quantification of hemodynamic change following administration of the vascular disrupting agent (VDA) CKD-516 using a rabbit VX2 liver tumor model. Methods: This study was approved by our institutional animal care and use committee. Eight VX2 liver-tumor-bearing rabbits were treated with intravenous CKD-516, and all underwent DCE-US using SonoVue before and again 2, 4, 6, and 24 hours following their treatment. The tumor perfusion parameters were obtained from the time-intensity curve of the DCE-US data. Repeated measures analysis of variance was performed to assess any significant change in tumor perfusion over time. Relative changes in the DCE-US parameters between the baseline and follow-up assessments were correlated with the relative changes in tumor size over the course of seven days using Pearson correlation. Results: CKD-516 treatment resulted in significant changes in the DCE-US parameters, including the peak intensity, total area under the time-intensity curve (AUCtotal), and AUC during wash-out (AUCout) over time (P<0.05). Pairwise comparison tests revealed that the AUCtotal and AUC during wash-in (AUCin) seen on the two-hour follow-up were significantly lower than the baseline values (P<0.05). However, none of early changes in the DCE-US parameters until 24-hour follow-up showed a significant correlation with the relative changes in tumor size during seven days after CKD-516 treatment. Conclusion: Our results suggest that a novel VDA (CKD-516) can cause disruption of tumor perfusion as early as two hours after treatment and that the therapeutic effect of CKD-516 treatment can be effectively quantified using DCE-US. PMID:24936491

2014-01-01

370

Contrast-Enhanced Ultrasonography of Hepatocellular Carcinoma After Chemoembolisation Using Drug-Eluting Beads: A Pilot Study Focused on Sustained Tumor Necrosis  

SciTech Connect

The purpose of this study was to assess the use of contrast-enhanced ultrasonography (CEUS) and the sustained antitumor effect of drug-eluting beads used for transarterial chemoembolisation (TACE) of unresectable hepatocellular carcinoma (HCC). Ten patients with solitary, unresectable HCC underwent CEUS before, 2 days after, and 35 to 40 days after TACE using a standard dose (4 ml) of drug-eluting beads (DC Beads; Biocompatibles, Surrey, UK) preloaded with doxorubicin (25 mg doxorubicin/ml hydrated beads). For CEUS, a second-generation contrast agent (SonoVue, Bracco, Milan, Italy) and a low mechanical-index technique were used. A part of the tumor was characterized as necrotic if it showed complete lack of enhancement. The percentage of necrosis was calculated at the sonographic section that depicted the largest diameter of the tumor. Differences in the extent of early (2 days after TACE) and delayed (35 to 40 days after TACE) necrosis were quantitatively and subjectively assessed. Early post-TACE tumor necrosis ranged from 21% to 70% (mean 43.5% {+-} 19%). There was a statistically significant (p = 0.0012, paired Student t test) higher percentage of delayed tumor necrosis, which ranged from 24% to 88% (mean 52.3% {+-} 20.3%). Subjective evaluation showed a delayed obvious increase of the necrotic areas in 5 patients. In 2 patients, tumor vessels that initially remained patent disappeared on the delayed follow-up. A part of tumor necrosis after chemoembolisation of HCC with DEB seems to take place later than 2 days after TACE. CEUS may provide evidence for the sustained antitumor effect of DEB-TACE. Nevertheless, the ideal time for the imaging evaluation of tumor response remains to be defined.

Moschouris, Hippocrates [Tzanio General Hospital, Department of Radiology (Greece); Malagari, Katerina [University of Athens, Attikon Hospital, Second Department of Radiology (Greece); Papadaki, Marina Georgiou; Kornezos, Ioannis, E-mail: kornezos@gmail.com; Matsaidonis, Dimitrios [Tzanio General Hospital, Department of Radiology (Greece)

2010-10-15

371

Starting with ultrasonography decreases popliteal block performance time in inexperienced hands: a prospective randomized study  

PubMed Central

Background The widespread of hallux valgus surgery in a day care setting enhanced the role of regional anaesthesia in the last few years. Sciatic nerve block at popliteal fossa has been shown to provide safe and effective analgesia. Our purpose was to compare the success rate and performance time of popliteal block during resident’s training for regional anaesthesia by using nerve stimulation (NS) or combined nerve stimulation and ultrasound (NS + US). Methods 70 adult patients undergoing hallux valgus surgery were randomly assigned to receive sciatic nerve block at popliteal fossa with US+NS or NS alone with a double injection technique for peroneal and tibial branches, respectively. Two residents experienced with nerve stimulator performed the procedures after a learning phase concerning ultrasonography. A local anaesthetic solution, containing 10 mL of 0.75% ropivacaine and 10 mL of 2% lidocaine was used: 12 mL were infiltrated close the tibial nerve, and 8mL were infiltrated close the common peroneal nerve. Block success rate, sensory block onset time, block performance time were evaluated. Recourse to general anaesthesia was considered as failure. Results No differences were detected in success rate and onset time of sensory block between the two groups (P > 0.05). The time to block tibial nerve and the overall block time were significantly faster in US+NS group (P < 0.05). Conclusions Ultrasound guidance for popliteal nerve block resulted in similar success rate with a faster procedure time when compared with nerve stimulator, thus providing a possible effect on resident education and operating room efficiency. PMID:23253617

2012-01-01

372

Quantitative analysis of contrast-enhanced ultrasonography: differentiating focal nodular hyperplasia from hepatocellular carcinoma  

PubMed Central

Objective: To explore the potential of quantitative analysis of contrast-enhanced ultrasonography (CEUS) in differentiating focal nodular hyperplasia (FNH) from hepatocellular carcinoma (HCC). Methods: 34 cases of FNH and 66 cases of HCC (all lesions <5?cm) were studied using CEUS to evaluate enhancement patterns and using analytic software Sonoliver® (Image-Arena™ v.4.0, TomTec Imaging Systems, Munich, Germany) to obtain quantitative features of CEUS in the region of interest. The quantitative features of maximum of intensity (IMAX), rise slope (RS), rise time (RT) and time to peak (TTP) were compared between the two groups and applied to further characterise both FNH and HCC with hypoenhancing patterns in the late phase on CEUS. Results: The sensitivity and specificity of CEUS for diagnosis of FNH were 67.6% and 93.9%, respectively. For quantitative analysis, IMAX and RS in FNHs were significantly higher than those in HCCs (p<0.05), while RT and TTP in FNHs were significantly shorter (p<0.05). Both the 11 FNHs and 62 HCCs with hypo-enhancing patterns in the late phase were further characterised with their quantitative features, and the sensitivity and specificity of IMAX for diagnosis of FNH were 90.9% and 43.5%, RS 81.8% and 80.6%, RT 90.9% and 71.0%, and TTP 90.9% and 71.0%, respectively. Conclusion: The quantitative features of CEUS in FNH and HCC were significantly different, and they could further differentiate FNH from HCC following conventional CEUS. Advances in knowledge: Our findings suggest that quantitative analysis of CEUS can improve the accuracy of differentiating FNH from HCC. PMID:23392189

Pei, X-Q; Liu, L-Z; Xiong, Y-H; Zou, R-H; Chen, M-S; Cai, M-Y

2013-01-01

373

Antiangiogenic effects of pazopanib in xenograft hepatocellular carcinoma models: evaluation by quantitative contrast-enhanced ultrasonography  

PubMed Central

Background Antiangiogenesis is a promising therapy for advanced hepatocellular carcinoma (HCC), but the effects are difficult to be evaluated. Pazopanib (GW786034B) is a pan-vascular endothelial growth factor receptor inhibitor, the antitumor effects or antiangiogenic effects haven't been investigated in HCC. Methods In vitro direct effects of pazopanib on human HCC cell lines and endothelial cells were evaluated. In vivo antitumor effects were evaluated in three xenograft nude mice models. In the subcutaneous HCCLM3 model, intratumoral blood perfusion was detected by contrast-enhanced ultrasonography (CEUS), and serial quantitative parameters were profiled from the time-intensity curves of ultrasonograms. Results In vitro proliferation of various HCC cell lines were not inhibited by pazopanib. Pazopanib inhibited migration and invasion and induced apoptosis significantly in two HCC cell lines, HCCLM3 and PLC/PRF/5. Proliferation, migration, and tubule formation of human umbilical vein endothelial cells were inhibited by pazopanib in a dose-dependent manner. In vivo tumor growth was significantly inhibited by pazopanib in HCCLM3, HepG2, and PLC/PRF/5 xenograft models. Various intratumoral perfusion parameters changed over time, and the signal intensity was significantly impaired in the treated tumors before the treatment efficacy on tumor size could be observed. Mean transit time of the contrast media in hotspot areas of the tumors was reversely correlated with intratumoral microvessel density. Conclusions Antitumor effects of pazopanib in HCC xenografts may owe to its antiangiogenic effects, and the in vivo antiangiogenic effects could be evaluated by quantitative CEUS. PMID:21251271

2011-01-01

374

Transcranial Doppler Ultrasonography in Beta-thalassemia Major Patients Without and With Thrombocytosis  

PubMed Central

Background Beta-thalassemia is a type of anemia in which the patients may require splenectomy and this can lead to thrombocytosis with increased risk of stroke. Transcranial Doppler ultrasound is a method for determining cerebral vessel stenosis. Objectives The aim of this study was to investigate whether the risk of a future stroke secondary to cerebral artery stenosis can be predicted with the use of transcranial Doppler ultrasound in beta-thalassemia major patients. Patients and Methods This study included 54 beta-thalassemia major patients divided into 2 groups; group A consisted of 28 patients who have thrombocytosis secondary to a previous splenectomy and group B comprised of 26 patients who did not have a splenectomy with normal platelet count, as well as a control group of 30 healthy individuals. Results Transcranial Doppler ultrasound of the cerebral vessels were performed in all participants, and the results for each group were compared with the controls. In addition, patients were evaluated for evidence of high flow velocity in the cerebral vessels that met the clinically significant criteria of ? 50% stenosis. Transcranial Doppler ultrasound velocity criteria for > 50% stenosis, indicating a risk of stroke, were not documented in any patients but increase in cerebral blood velocities in many arteries in group A and in some arteries in group B were revealed. Conclusion Following splenectomy, thrombocytosis can predispose the patients to an increase in cerebral blood velocities more than respected with anemia. But by transcranial doppler ultrasonography no evidence of significant stenosis were found in intracerebral arteries to conclude that the beta-thalassemia major patients were more prone to the development of stroke secondary to this abnormality. PMID:23984004

Shariat, Abdolhamid; Nazeri, Masoume; Abolhasani Foroughi, Amin; Karimi, Mehran

2013-01-01

375

High-frequency (20–50 MHz) ultrasonography of pseudoxanthoma elasticum skin lesions  

PubMed Central

Summary Background In most patients pseudoxanthoma elasticum (PXE) manifests with yellowish cutaneous papules and dermal elastorrhexis on skin biopsy. However, in a small number of cases there are no skin manifestations on clinical examination. To establish a diagnosis of PXE in such patients with limited manifestations such as angioid streaks and/or premature cardiovascular disease is challenging. It would therefore be valuable to predict the skin areas that would yield a biopsy specimen positive for elastorrhexis with a non-invasive procedure. High frequency ultrasonography (HFUS) should be evaluated in this respect. Objectives Prior to achieve the goal mentioned above we aimed at describing the characteristics of clinically visible PXE skin using HFUS, and to evaluate its relevance for diagnosis. Methods HFUS was performed in a cohort of PXE patients and controls at a referral centre. HFUS images of PXE skin were compared to those of other conditions. Five operators were tasked with the blind scoring of multiple HFUS images of photoprotected or photoexposed skin from patients with PXE and controls. The diagnostic relevance indices (sensitivity, specificity, likelihood ratios, inter-observer agreement) were calculated. Results The HFUS changes considered as diagnostic for PXE were primarily oval homogeneous hypoechogenic areas in the middermis. The size of these areas closely matched the extent of the histological changes. The sensitivity and specificity of the diagnostic items and inter-observer agreement were high, particularly in photoprotected skin. Dermal hypoechogenicity in PXE could be related to high hydration of connective tissue due to the presence of glycosaminoglycans despite elastic fibre mineralization. Conclusions HFUS provides suggestive images of PXE skin lesions. HFUS should be now studied to determine if it is a potentially valuable technique for the non-invasive identification of elastorrhexis in PXE patients in whom skin involvement is clinically minimal or absent. PMID:23909384

Guérin-Moreau, M.; Leftheriotis, G.; Le Corre, Y.; Etienne, M.; Amode, R.; Hamel, J.F.; Croué, A.; Le Saux, O.; Machet, L.; Martin, L.

2013-01-01

376

Crimean-congo hemorrhagic Fever: aid of abdominal ultrasonography in prediction of severity.  

PubMed

Abstract Crimean-Congo hemorrhagic fever (CCHF) is a fatal viral infection that involves multiple organs, and endothelium. We described abdominal sonographic findings of the patients infected with the Crimean-Congo hemorrhagic fever virus (CCHFV) in relation to the severity of the disease. This is a prospective study performed among hospitalized patients infected with CCHF between 2005 and 2011. A total of 210 hospitalized patients with confirmed CCHF infection were included in the study. The mean age was 47 and 49.5% of the patients were female. Patients were classified as mild, moderate, or severe disease according to their clinical and laboratory findings. The relationship between the clinical severity of CCHF and the abdominal sonographic findings was analyzed. Sonographic findings of abdomen included gallbladder wall thickening (GBWT) in 44 (21%), splenomegaly in 39 (19%), hepatomegaly in 52 (25%), decrease in echo of liver parenchyma in nine (4%), increase in echo liver parenchyma in 13 (6%), intra-abdominal fluid collection/ascites in 23 (11%), and enlarged periportal lymph nodes in seven (3%) cases. GBWT was detected in 3% of mild patients, 23% of moderate patients, and 61% of severe patients (p<0.001). In multivariate analysis to predict the severity, GBWT (odds ratio [OR] 5.4, confidence interval [CI] 1.76-16.49, p=0.003) and intra-abdominal fluid collection/ascites (OR 3.5, CI 1.07-12.61, p=0.049) were found to be significantly associated with disease severity. In conclusion, ultrasonography is a reliable, useful, and noninvasive diagnostic tool for evaluation of the abdominal findings of the patients with CCHFV infection. GBWT and intra-abdominal fluid collection/ascites were found to be predictors of severity. PMID:25409273

Ziraman, Ipek; Celikbas, Aysel; Ergonul, Onder; Degirmenci, Tulin; Uyanik, Sadik Ahmet; Koparal, Suha; Dokuzoguz, Basak

2014-11-01

377

Morphometric analysis of fetal development of Cavia porcellus (Linnaeus, 1758) by ultrasonography--pilot study.  

PubMed

Measurements on the growth process and placental development of the embryo and fetuses of Cavia porcellus were carried out using ultrasonography. Embryo, fetus, and placenta were monitored from Day 15 after mating day to the end of gestation. Based on linear and quadratic regressions, the following morphometric analysis showed a good indicator of the gestational age: placental diameter, biparietal diameter, renal length, and crown rump. The embryonic cardiac beat was first detected at an average of 22.5 days. The placental diameter showed constant increase from beginning of gestation then remained to term and presented a quadratic correlation with gestational age (r(2) = 0.89). Mean placental diameter at the end of pregnancy was 3.5 ± 0.23 cm. By Day 30, it was possible to measure biparietal diameter, which followed a linear pattern of increase up to the end of gestation (r(2) = 0.95). Mean biparietal diameter in the end of pregnancy was 1.94 ± 0.03 cm. Kidneys were firstly observed on Day 35 as hyperechoic structures without the distinction of medullar and cortical layers, thus the regression model equation between kidney length and gestational age presents a quadratic relationship (r(2) = 0.7). The crown rump presented a simple linear growth, starting from 15 days of gestation, displaying a high correlation with the gestational age (r(2) = 0.9). The offspring were born after an average gestation of 61.3 days. In this study, we conclude that biparietal diameter, placental diameter, and crown rump are adequate predictive parameters of gestational age in guinea pigs because they present high correlation index. PMID:24560548

Santos, Juliana; Fonseca, Erika; van Melis, Juliano; Miglino, Maria Angélica

2014-04-15

378

Evaluation of Thyroid Disorders During Head-and-Neck Radiotherapy by Using Functional Analysis and Ultrasonography  

SciTech Connect

Purpose: To evaluate thyroid function and vascular changes during radiotherapy for patients with head and neck cancer. Methods and Materials: Fifty patients treated with primary or postoperative radiotherapy for various cancers in the head and neck region were prospectively evaluated. The serum samples (triiodothyronine [T3], thyroxine [T4], thyroid-stimulating hormone [TSH], free triiodothyronine [FT3], and free thyroxine [FT4]), the echo level of the thyroid gland, and color Doppler ultrasonography (CDU) parameters of the right inferior thyroid artery (RITA) of the patients were measured before and at regular intervals during radiotherapy. The thyroid gland dose-volume histograms of the patients were derived from their computed tomography-based treatment plans. Results: There was a significant fall in TSH level (p < 0.0001) but an increase in FT4 (p < 0.0001) and T4 (p < 0.022) levels during the radiotherapy course. The threshold dose required to produce significant changes was 12 Gy (Biologically Effective Dose in 2-Gy fractions, BED{sub 2}). There were significant rises in the patients' pulsatility index, resistive index, peak systolic velocity, blood volume flow levels, and RITA diameter (p < 0.0001), as detected by CDU during radiotherapy, compared to those parameters measured before the treatment. Hypoechogenicity and irregular echo patterns (p < 0.0001) were seen during radiotherapy compared to those before treatment. There was significant Pearson's correlation between the CDU parameters and T4, FT4, and TSH levels. Conclusions: Radiation-induced thyroiditis is regarded as primary damage to the thyroid gland. Thyroiditis can subsequently result in hypothyroidism or hyperthyroidism. Our results demonstrated that changes in thyroid vessels occur during radiotherapy delivered to patients. Vessel changes also can be attributed to the late effect of radiation on the thyroid gland. The hypoechogenicity and irregular echo patterns observed in patients may result from the increase in intrathyroidal flow.

Bakhshandeh, Mohsen [Department of Medical Physics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran (Iran, Islamic Republic of); Hashemi, Bijan, E-mail: bhashemi@modares.ac.ir [Department of Medical Physics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran (Iran, Islamic Republic of); Mahdavi, Seyed Rabie [Department of Medical Physics, Faculty of Medical Sciences, Tehran University of Medical Sciences, Tehran (Iran, Islamic Republic of); Nikoofar, Alireza [Department of Radiation Oncology, Hafte-Tir Hospital, Tehran University of Medical Sciences, Tehran (Iran, Islamic Republic of); Edraki, Hamid Reza [Department of Radiology, Panzdahe-Khordad Hospital, Shahid Beheshti University of Medical Sciences, Tehran (Iran, Islamic Republic of); Kazemnejad, Anoshirvan [Department of Biostatistics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran (Iran, Islamic Republic of)

2012-05-01

379

Ultrasonography-guided central venous catheterisation in haematological patients with severe thrombocytopenia  

PubMed Central

Background Cannulation of the internal jugular vein (CVC) is a blind surface landmark-guided technique that could be potentially dangerous in patients with very low platelet counts. In such patients, ultrasonography (US)-guided CVC may be a valid approach. There is a lack of published data on the efficacy and safety of urgent US-guided CVC performed in haematological patients with severe thrombocytopenia. Materials and methods We retrospectively studied the safety of urgent CVC procedures in haematological patients including those with severe thrombocytopenia (platelet count <30×109/L). From January 1999 to June 2009, 431 CVC insertional procedures in 431 consecutive patients were evaluated. Patients were included in the study if they had a haematological disorder and required urgent CVC insertion. Patients were placed in Trendelenburg's position, an 18-gauge needle and guide-wire were advanced under real-time US guidance into the last part of the internal jugular vein; central venous cannulation of the internal jugular vein was performed using the Seldinger technique in all the procedures. Major and minor procedure-related complications were recorded. Results All 431 patients studied had haematological disorders: 39 had severe thrombocytopenia, refractory to platelet transfusion (group 1), while 392 did not have severe thrombocytopenia (group 2). The general characteristics of the patients in the two groups differed only for platelet count. The average time taken to perform the procedure was 4 minutes. Success rates were 97.4% and 97.9% in group 1 and group 2, respectively. No major complications occurred in either group. Discussion US-guided CVC is a safe and effective approach in haematological patients with severe thrombocytopenia requiring urgent cannulation for life support, plasma-exchange, chemotherapy and transfusion. PMID:23399356

Napolitano, Mariasanta; Malato, Alessandra; Raffaele, Francesco; Palazzolo, Manuela; Iacono, Giorgio Lo; Pinna, Roberto; Geraci, Girolamo; Modica, Giuseppe; Saccullo, Giorgia; Siragusa, Sergio; Cajozzo, Massimo

2013-01-01

380

[Diagnosis of ductal carcinoma in situ with interruption of the anterior border of the mammary gland by ultrasonography-a case report].  

PubMed

We report a case of ductal carcinoma in situ( DCIS) with interruption of the anterior border of the mammary gland by ultrasonography. The patient was a 41-year-old woman. The patient was identified by a focal asymmetric density on her left breast by screening mammography. Ultrasonography showed an ill-defined low echoic mass, 25 mm in diameter, in the A area of her left breast. The tumor had features consistent with the interruption of the anterior border of the mammary gland. Therefore, she was diagnosed with invasive ductal carcinoma of the breast. We performed a modified radical mastectomy with sentinel lymph node biopsy. A resected specimen led to a diagnosis of DCIS positive for estrogen receptor and progesterone receptor, and negative for HER2/neu protein expression. After surgery, she was administered tamoxifen. One year and 6 months after the operation, she is well without metastases. Ultrasonography is generally useful to differentiate between a DCIS lesion or an invasive ductal carcinoma lesion. However, in this case, we could not diagnose the tumor as DCIS by ultrasonography because the tumor was interrupted by the anterior border of the mammary gland. This case suggests that we should be cautious when diagnosing low echoic tumors with interruption of the anterior border of the mammary gland by ultrasonography. PMID:24394112

Sakurai, Kenichi; Fujisaki, Shigeru; Maeda, Tetsuyo; Nagashima, Saki; Hara, Yukiko; Tomita, Ryouichi; Suzuki, Shuhei; Enomoto, Katsuhisa; Amano, Sadao

2013-11-01

381

Low Rates of Additional Cancer Detection by Magnetic Resonance Imaging in Newly Diagnosed Breast Cancer Patients Who Undergo Preoperative Mammography and Ultrasonography  

PubMed Central

Purpose We evaluated the efficacy of breast magnetic resonance imaging (MRI) for detecting additional malignancies in breast cancer patients newly diagnosed by breast ultrasonography and mammography. Methods We retrospectively reviewed the records of 1,038 breast cancer patients who underwent preoperative mammography, bilateral breast ultrasonography, and subsequent breast MRI between August 2007 and December 2010 at single institution in Korea. MRI-detected additional lesions were defined as those lesions detected by breast MRI that were previously undetected by mammography and ultrasonography and which would otherwise have not been identified. Results Among the 1,038 cases, 228 additional lesions (22.0%) and 30 additional malignancies (2.9%) were detected by breast MRI. Of these 228 lesions, 109 were suspected to be malignant (Breast Imaging-Reporting and Data System category 4 or 5) on breast MRI and second-look ultrasonography and 30 were pathologically confirmed to be malignant (13.2%). Of these 30 lesions, 21 were ipsilateral to the main lesion and nine were contralateral. Fourteen lesions were in situ carcinomas and 16 were invasive carcinomas. The positive predictive value of breast MRI was 27.5% (30/109). No clinicopathological factors were significantly associated with additional malignant foci. Conclusion Breast MRI was useful in detecting additional malignancy in a small number of patients who underwent ultrasonography and mammography. PMID:25013439

Kim, Jisun; Han, Wonshik; Moon, Hyeong-Gon; Ahn, Soo Kyung; Shin, Hee-Chul; You, Jee-Man; Chang, Jung Min; Cho, Nariya; Moon, Woo Kyung; Park, In-Ae

2014-01-01

382

Periodic Duplex Ultrasonography Screening Together with Elective Percutaneous Transluminal Angioplasty in the Management of Graft Arteriovenous Fistulas for Hemodialysis  

Microsoft Academic Search

Purpose  To evaluate the effectiveness of regular duplex ultrasonography in the management of graft arteriovenous fistulas for hemodialysis.\\u000a \\u000a \\u000a \\u000a Methods  Between March 1997 and December 2004, we prospectively studied consecutive patients who underwent polytetrafluoroethylene\\u000a graft arteriovenous (AV) fistulae in the upper extremity with a subsequent regular duplex ultrasound examination for the identification\\u000a of stenosis. The main ultrasound-guided indication for percutaneous transluminal angioplasty (PTA)

Naoki Toya; Tetsuji Fujita; Hiromichi Hagiwara; Makoto Sumi; Koji Kurosawa; Yuka Negishi; Hiromasa Tachihara; Katsuhiko Yanaga

2006-01-01

383

Charcoal-Induced Granuloma That Mimicked a Nodal Metastasis on Ultrasonography and FDG-PET/CT after Neck Dissection.  

PubMed

Charcoal can be used for preoperative localization of metastatic lymph nodes in the neck. Charcoal remains stable without causing foreign body reactions during as hort period. However, foreign body reactions may develop if charcoal is left in situ for more than 6 months. We reported a case of charcoal granuloma mimicking local recurrence on fluorodeoxyglucose-positron emission tomography/computed tomography and ultrasonography in a 47-year-old woman who had cervical lymph node dissection due to metastatic invasive ductal carcinoma of the breast. PMID:25598690

Choi, Jin Woo; Moon, Won-Jin; Choi, Nami; Roh, Hong Gee; Kim, Mi Young; Kim, Na Ra; Moon, Sung Gyu; Chung, Hyun Woo; Lim, So Dug; Yang, Jung-Hyun

2015-01-01

384

Charcoal-Induced Granuloma That Mimicked a Nodal Metastasis on Ultrasonography and FDG-PET/CT after Neck Dissection  

PubMed Central

Charcoal can be used for preoperative localization of metastatic lymph nodes in the neck. Charcoal remains stable without causing foreign body reactions during as hort period. However, foreign body reactions may develop if charcoal is left in situ for more than 6 months. We reported a case of charcoal granuloma mimicking local recurrence on fluorodeoxyglucose-positron emission tomography/computed tomography and ultrasonography in a 47-year-old woman who had cervical lymph node dissection due to metastatic invasive ductal carcinoma of the breast.

Choi, Jin Woo; Choi, Nami; Roh, Hong Gee; Kim, Mi Young; Kim, Na Ra; Moon, Sung Gyu; Chung, Hyun Woo; Lim, So Dug; Yang, Jung-Hyun

2015-01-01

385

A 78joints ultrasonographic assessment is associated with clinical assessments and is highly responsive to improvement in a longitudinal study of patients with rheumatoid arthritis starting adalimumab treatment  

Microsoft Academic Search

ObjectivesTo examine associations between ultrasonography (US) assessments (B-mode (BM) and power Doppler (PD)) of a large number of joints and traditional assessments of disease activity, and to examine the sensitivity to change of the US scores and clinical measures in patients with rheumatoid arthritis (RA).MethodsTwenty patients with RA initiating adalimumab treatment were examined at baseline and after 1, 3, 6

Hilde Berner Hammer; Margareth Sveinsson; Anne Katrine Kongtorp; Tore K Kvien

2010-01-01

386

Evaluation of sorafenib for hepatocellular carcinoma by contrast-enhanced ultrasonography: A pilot study  

PubMed Central

AIM: To determine the usefulness of arrival time parametric imaging (AtPI) using contrast-enhanced ultrasonography (CEUS) with Sonazoid in evaluating early response to sorafenib for hepatocellular carcinoma (HCC). METHODS: Fourteen advanced HCC patients who received sorafenib 400/800 mg/d for at least 4 wk and were followed up by CEUS were enrolled in this study. CEUS was performed before treatment and 2 and 4 wk after treatment, and images of the target lesion in the arterial phase were recorded for each patient. The images were analyzed by AtPI. Color mapping (CM) images obtained by AtPI were compared before and after the treatment. In these CM images, the mean arrival time of the contrast agent in the region of interest from the starting point [mean time (MT)] was calculated. In each patient, differences between MT before and MT 2 and 4 wk after the treatment were compared with responses evaluated 4-8 wk after the treatment by dynamic computed tomography (CT), and statistical analysis was performed. Modified response evaluation criteria in solid tumors was used for the response evaluation. RESULTS: In CM images both 2 and 4 wk after the treatment, delays in the arrival time of the contrast agent were noted in 8 of the 14 patients. In the other 6 patients, no color changes were observed in the tumor, or red and/or yellow increase, suggesting a decrease in blood flow velocity between images 2 and 4 wk after the treatment and those before the treatment. Dynamic CT could be performed 4-8 wk after the treatment in 13 of the 14 patients. Median differences in the MT were 1.13 s and 1.015 s, 2 and 4 wk after the treatment, respectively, in the 8 patients who showed stable disease (SD)/partial response (PR) on dynamic CT. Median differences in the MT were -0.39 s and -0.95 s, 2 and 4 wk after the treatment, respectively, in the 5 patients who showed progressive disease (PD). Differences in the median MT between SD/PR and PD groups were significant 2 and 4 wk after the treatment with P = 0.019 and P = 0.028, respectively. CONCLUSION: AtPI by CEUS using Sonazoid is suggested to be useful for evaluating early responses to sorafenib. PMID:23155317

Shiozawa, Kazue; Watanabe, Manabu; Kikuchi, Yoshinori; Kudo, Takahide; Maruyama, Kenichi; Sumino, Yasukiyo

2012-01-01

387

Four-Dimensional Ultrasonography of the Fetal Heart using a Novel Tomographic Ultrasound Imaging Display  

PubMed Central

Objective The objective of this study was to investigate the feasibility of examining the fetal heart with Tomographic Ultrasound Imaging (TUI) using four-dimensional (4D) volume datasets acquired with spatiotemporal image correlation (STIC). Material and Methods One hundred and ninety-five fetuses underwent 4D ultrasonography (US) of the fetal heart with STIC. Volume datasets were acquired with B-mode (n=195) and color Doppler imaging (CDI) (n=168), and were reviewed offline using TUI, a new display modality that automatically slices 3D/4D volume datasets, providing simultaneous visualization of up to eight parallel planes in a single screen. Visualization rates for standard transverse planes used to examine the fetal heart were calculated and compared for volumes acquired with B-mode or CDI. Diagnoses by TUI were compared to postnatal diagnoses. Results 1) The four- and five-chamber and the three-vessel and trachea views were visualized in 97.4% (190/195), 88.2% (172/195), and 79.5% (142/195), respectively, of the volume datasets acquired with B-mode; 2) these views were visualized in 98.2% (165/168), 97.0% (163/168), and 83.6% (145/168), respectively, of the volume datasets acquired with CDI; 3) CDI contributed additional diagnostic information to 12.5% (21/168), 14.2% (24/168) and 10.1% (17/168) of the four- and five-chamber and the three-vessel and trachea views; 4) cardiac anomalies other than isolated ventricular septal defects were identified by TUI in 16 of 195 fetuses (8.2%) and, among these, CDI provided additional diagnostic information in 5 (31.3%); 5) the sensitivity, specificity, positive- and negative-predictive values of TUI to diagnose congenital heart disease in cases where both B-mode and CDI volume datasets were acquired prenatally were 92.9%, 98.8%, 92.9% and 98.8%, respectively. Conclusion Standard transverse planes commonly used to examine the fetal heart can be automatically displayed with TUI in the majority of fetuses undergoing 4D US with STIC. Due to the retrospective nature of this study, the results should be interpreted with caution and independently confirmed before this methodology is introduced into clinical practice. PMID:16489885

Gonçalves, Luís F.; Espinoza, Jimmy; Romero, Roberto; Kusanovic, Juan Pedro; Swope, Betsy; Nien, Jyh Kae; Erez, Offer; Soto, Eleazar; Treadwell, Marjorie C.

2006-01-01

388

Use of Intra-Arterial Carbon-Dioxide-Enhanced Ultrasonography for Guidance of Radiofrequency Ablation and Transcatheter Arterial Chemoembolization in Hepatocellular Carcinoma  

SciTech Connect

A 73-year-old man with hepatitis-C-related cirrhosis and an elevated alpha-fetoprotein level and tumor in segment 3 of his liver was referred for interventional radiologic treatment. He was not a candidate for surgical resection due to impaired liver function and his personal preferences. On conventional ultrasonography no lesion could be detected, but the tumor was clearly depicted by intra-arterial carbon-dioxide-enhanced ultrasonography. Radiofrequency ablation was performed safely and accurately under the guidance of carbon-dioxide-enhanced ultrasonography. By concomitant performance of transcatheter arterial chemoembolization with radiofrequency ablation, extensive necrosis was obtained and adequate tumor volume reduction achieved with only one treatment session.

Ohmoto, Kenji, E-mail: ohmotok@med.kawasaki-m.ac.jp; Yoshioka, Naoko; Tomiyama, Yasuyuki; Shibata, Norikuni; Kawase, Tomoya; Yoshida, Koji; Kuboki, Makoto; Yamamoto, Shinichiro [Kawasaki Medical School, Division of Hepatology, Department of Medicine (Japan)

2006-12-15

389

A study of the possible effects of repeated intracorporeal self-injection of vasoactive drugs in patients with elevated end diastolic velocity during pharmacopenile duplex ultrasonography  

PubMed Central

Introduction The aim of the work is to evaluate the effect of repeated intracavernosal self-injection of vasoactive drugs in patients with elevated End Diastolic Velocity (>5 cm/sec) during pharmacopenile duplex ultrasonography (PPDU). Methods Duplex evaluation was performed to the patients on self-injection therapy for comparison of end diastolic velocity and resistive index before and after completing the eight doses of IC self-injection. Results After the 8 trials of home therapy, 21 (52.5%) patients showed improvement in the duplex parameters regarding the end diastolic velocity, ten of them showed improvement in the EDV to the level of <5 cm/sec. The effect of different factors that may contribute to the improvement in EDV to <5 cm/sec are shown in the table 2. Age was the only predictive factor for successful response to home therapy intracavernous injection (ICI). Improvement in erectile response was assessed before and after the course of the therapy. Erection response to ICI during penile duplex improved in only six patients (E4 & E4-5)) to the point that it was sufficient for satisfactory sexual performance, 3 of them (7.5%) regained spontaneous erection and stopped using ICI (table 3). The IIEF score was 10.6 ±2.8 before the home therapy and it became 14 ±3.9 one month after completing the treatment course (P value <0.001). Conclusions Early rehabilitation of the patients with venous leakage ED using ICI may help to regain normal erection and avoid unnecessary penile prosthesis surgeries. PMID:24579031

Fayez, Ashraf Hasan; El-Khayat, Yasser; Hosny, Hosam; Zaki, Shady

2013-01-01

390

Influence of the observer's level of experience on systolic and diastolic arterial blood pressure measurements using Doppler ultrasonography in healthy conscious cats.  

PubMed

The objective of this study was to determine the influence of the observer's level of experience on within- and between-day variability, and the percentage of successful systolic (SAP) and diastolic arterial blood pressure (DAP) measurements obtained by Doppler ultrasonography (DU) in awake cats. For this purpose, six healthy conscious cats were used and four observers with different levels of training performed 144 SAP and DAP measurements on 4 days using DU. Measurements were recorded five consecutive times, and mean values were used for statistical analysis. Only the two most skilled observers - a PhD student in cardiology and a Dipl ECVIM-CA (cardiology) - had within- and between-day coefficients of variation (CVs) for SAP ?16% (13-16%). Conversely, the two less experienced observers - a fifth-year student and an assistant - had high between-day CVs (61% and 73%). For DAP, only the most experienced observer (Dipl ECVIM-CA) succeeded in 100% of the attempts, with within- and between-day CVs of 11% and 4%, respectively. Conversely, DAP could not be measured by the other three observers in 8%, 19% and 56% of attempts (from the highest to the lowest level of experience); therefore, the corresponding CV values could not be calculated. In conclusion, SAP may be assessed using DU in healthy awake cats with good repeatability and reproducibility by a well-trained observer. Measurement of DAP is more difficult than of SAP, and needs a longer training period, which represents one of the limitations of DU in cats. PMID:24782457

Gouni, Vassiliki; Tissier, Renaud; Misbach, Charlotte; Balouka, David; Bueno, Hanna; Pouchelon, Jean-Louis; Lefebvre, Hervé P; Chetboul, Valérie

2015-02-01

391

Correlation between computerised findings and Newman's scaling on vascularity using power Doppler ultrasonography imaging and its predictive value in patients with plantar fasciitis  

PubMed Central

Objectives The purpose of this study was to correlate findings on small vessel vascularity between computerised findings and Newman's scaling using power Doppler ultrasonography (PDU) imaging and its predictive value in patients with plantar fasciitis. Methods PDU was performed on 44 patients (age range 30–66 years; mean age 48 years) with plantar fasciitis and 46 healthy subjects (age range 18–61 years; mean age 36 years). The vascularity was quantified using ultrasound images by a customised software program and graded by Newman's grading scale. Vascular index (VI) was calculated from the software program as the ratio of the number of colour pixels to the total number of pixels within a standardised selected area of proximal plantar fascia. The 46 healthy subjects were examined on 2 occasions 7–10 days apart, and 18 of them were assessed by 2 examiners. Statistical analyses were performed using intraclass correlation coefficient and linear regression analysis. Results Good correlation was found between the averaged VI ratios and Newman's qualitative scale (? = 0.70; p<0.001). Intratester and intertester reliability were 0.89 and 0.61, respectively. Furthermore, higher VI was correlated with less reduction in pain after physiotherapeutic intervention. Conclusions The computerised VI not only has a high level of concordance with the Newman grading scale but is also reliable in reflecting the vascularity of proximal plantar fascia, and can predict pain reduction after intervention. This index can be used to characterise the changes in vascularity of patients with plantar fasciitis, and it may also be helpful for evaluating treatment and monitoring the progress after intervention in future studies. PMID:22167513

Chen, H; Ho, H M; Ying, M; Fu, S N

2012-01-01

392

Evaluation of contrast-enhanced ultrasonography using perfluorobutane (Sonazoid®) in patients with small hepatocellular carcinoma: comparison with dynamic computed tomography  

PubMed Central

This study aimed to elucidate the efficacy of contrast-enhanced ultrasonography (CEUS) with perfluorobutane (Sonazoid®) in the diagnosis of hepatocellular carcinomas (HCCs), particularly small HCCs, by comparing the results with dynamic computed tomography (Dy-CT). Seventy-nine nodules in 69 patients with chronic liver disease, suspected as HCCs were studied. The nodules were selected based on the results of B-mode ultrasonography and/or Dy-CT conducted between January and August 2007. The nodules were divided into two groups: the S-group with tumors ?2 cm (49 nodules), and the L-group with tumors >2 cm (30 nodules). Typical HCCs were defined, and the nodules were enhanced and shown as defects in the arterial and late phase of Dy-CT, respectively. Target lesions were scanned using CEUS, and the results were compared with those of Dy-CT. The L-group nodules diagnosed as HCCs using Dy-CT were also diagnosed as HCCs using CEUS. In the S-group, the diagnostic sensitivity of CEUS was 94.7% and the specificity was 81.8%. We diagnosed two liver tumors that were detected by CEUS but not by Dy-CT; biopsies revealed one tumor to be a well-differentiated HCC and the other to be an atypical adenomatous hyperplasia. The sensitivity and specificity of CEUS against HCC were high even in the small-size HCCs. Thus, Sonazoid is useful in the screening for small HCCs. PMID:22966329

KAN, MIKI; HIRAOKA, ATSUSHI; UEHARA, TAKAHIDE; HIDAKA, SATOSHI; ICHIRYU, MISA; NAKAHARA, HIROMASA; OCHI, HIRONORI; TANABE, ATSUSHI; KODAMA, AKIHIRO; HASEBE, AKI; MIYAMOTO, YASUYUKI; NINOMIYA, TOMOYUKI; ABE, MASANORI; HIASA, YOICHI; MATSUURA, BUNZO; ONJI, MORIKAZU; SHINBATA, YUKI; KAMEOKA, CHIEKO; DOI, SHIGEKAZU; TAMURA, HIROMI; FURUYA, KEIZOU; MICHITAKA, KOJIRO

2010-01-01

393

Ultrasonography and Radiography to Identify Early Post Traumatic Myosistis Ossificans in an 18-Year-Old Male: A Case Report  

PubMed Central

Objective The purpose of this case report is to describe a patient with post traumatic myositis ossificans (PTMO) of the anterior thigh following blunt trauma and discuss the incidence, clinical presentation, management, and imaging findings. Clinical features An 18-year-old male presented to a chiropractic clinic with a chief complaint of left knee pain and reduced range of motion after an impact injury to his left anterior thigh during hurdling 6 weeks earlier. Immediately after the injury, he presented to the emergency department where radiography of the left knee was negative and he was diagnosed with a muscle sprain. Follow-up radiography and ultrasonography of the left knee in a chiropractic radiology department revealed ossification consistent with PTMO within his vastus intermedius. Intervention and outcome The patient underwent a course of rehabilitation for 2 months including ice, class IV cold laser and vibration applied to his anterior thigh, and myofascial release of his quadriceps musculature with targeted and progressive rehabilitative exercises. His left knee pain resolved within 2 weeks of care. He resumed sports participation (American football) pain-free, while wearing protective padding over the affected thigh, 1 month after presentation, which was approximately 2 1/2 months following his injury. Conclusion This case demonstrates that ultrasonography may have the capability to detect early phases of PTMO approximately 2 weeks prior to radiographic evidence and to monitor progression throughout its course.

Yochum, Alicia M.; Reckelhoff, Kenneth; Kaeser, Martha; Kettner, Norman W.

2014-01-01

394

Ultrasound assessment of residual abnormalities following primary chemotherapy for breast cancer  

Microsoft Academic Search

The purpose of this study was to assess the usefulness of ultrasonography (US) in the assessment of the breast following primary medical therapy (PMT) of large operable breast cancer. A total of 52 patients were studied; all had invasive breast cancer, confirmed by core biopsy, with initial size > 4 cm by palpation, T2-3, N0-1, M0. PMT was with epirubicin,

MT Seymour; EC Moskovic; G Walsh; P Trott; IE Smith

1997-01-01

395

Contrast-enhanced ultrasonography in peripheral lung consolidations: What’s its actual role?  

PubMed Central

AIM: To evaluate the diagnostic accuracy of contrast-enhanced ultrasonography (CEUS) in the differential diagnosis between neoplastic and non-neoplastic peripheral pleuro-pulmonary lesions. METHODS: One hundred patients with pleural or peripheral pulmonary lesions underwent thoracic CEUS. An 8 microliters/mL solution of sulfur hexafluoride microbubbles stabilized by a phospholipid shell (SonoVue®) was used as US contrast agent. The clips were stored and independently reviewed by two readers, who recorded the following parameters: presence/absence of arterial enhancement, time to enhancement (TE), extent of enhancement (EE), pattern of enhancement (PE), presence/absence of wash-out, time to wash-out, and extent of wash-out. After the final diagnosis (based on histopathologic findings or follow-up of at least 15 mo) was reached, sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), positive likelihood ratio (PLR), negative likelihood ratio (NLR) of each CEUS parameter in the differential diagnosis between neoplastic and non-neoplastic lesions were calculated. Furthermore, an arbitrary score based on the ratio between the PPVs of each CEUS parameter was calculated, to evaluate if some relationship could exist between overall CEUS behaviour and neoplastic or non-neoplastic nature of the lesions. RESULTS: Five patients were lost at follow-up before a conclusive diagnosis was reached, 53 lesions resulted neoplastic and 42 non-neoplastic. Enhancement in the arterial phase was observed in 53/53 neoplastic lesions and 30/42 non-neoplastic lesions. On the whole, 40/42 non-neoplastic lesions showed absence of enhancement or early enhancement (95.2%) vs 3/53 neoplastic lesions (5.7%). EE was marked in 29/53 (54.7%) neoplastic lesions and 25/30 (83.3%) non-neoplastic lesions, moderate in 24/53 (45.5%) and 5/30 (16.7%), respectively. PE was homogeneous in 6/53 (11.3%) neoplastic lesions and 18/30 (60%) non-neoplastic lesions, inhomogeneous in 47/53 (88.7%) and 12/30 (40%), respectively. 19/30 (63.3%) non-neoplastic lesions enhancing in the arterial phase had no wash-out in the venous phase, 11/30 (36.7%) had late and mild wash-out. Wash-out was early in 26/53 (49%) neoplastic lesions, late in 26/53 (49%), absent in 1 (2%); marked in 16/53 (30.2%), and moderate in 36/53 (67.9%). The delayed enhancement in the arterial phase showed a sensitivity of 94.32%, specificity of 95.2%, PPV of 96.2%, NPV of 93%, PLR of 19.81, and NLR of 0.06 in identifying the neoplastic lesions. All other parameters individually considered showed unsatisfactory values of sensitivity, or specificity, or both, in differentiating neoplastic from non-neoplastic lesions. The median of the overall arbitrary score was 3 (range 0-14) in non-neoplastic lesions, and 16.5 (range 7.0-17.5) in neoplastic lesions (P < 0.001). The correlation between the diagnosis of neoplastic vs non-neoplastic lesion and the score value was statistically significant (r = 0.858, P < 0.001). Based on the score distribution, a cut-off of 7.5 enabled to reach a sensitivity of 98.1%, specificity of 95.1%, PPV 96.3%, NPV 97.5%, PVR 20.1 and NVR 0.02 in differentiating neoplastic from non-neoplastic lesions. CONCLUSION: CEUS could be useful in the diagnostic workup of pleuropulmonary lesions. A delayed TE or a score ? 7.5 suggest the neoplastic nature of a lesion. PMID:24179632

Sartori, Sergio; Postorivo, Simona; Vece, Francesca Di; Ermili, Francesca; Tassinari, Davide; Tombesi, Paola

2013-01-01

396

Usefulness of intravascular ultrasonography monitoring of coil embolization for traumatic direct carotid-cavernous fistula-case report-.  

PubMed

A 61-year-old woman was admitted for head injury after a traffic accident. Two months later, she developed abducens nerve palsy, chemosis, and pulsatile tinnitus. Right internal carotid angiography demonstrated a high flow direct carotid-cavernous fistula (CCF) at the C(5) portion with reflux into the superficial and deep sylvian veins, superior ophthalmic vein, superior petrosal sinus, and inferior petrosal sinus. Intravascular ultrasonography (IVUS) revealed a large fistula at the C(5) portion of the internal carotid artery (ICA). Coil embolization via transarterial and transvenous approaches under IVUS monitoring was performed. During the procedure, IVUS accurately detected protrusion of a coil into the parent ICA, and the parent artery could be preserved. IVUS monitoring is useful for embolization of direct CCF with coils. PMID:20035138

Nishio, Akimasa; Kawakami, Taichiro; Mitsuhashi, Yutaka; Hayasaki, Koji; Kiyama, Miki; Tada, Yuichi; Ohata, Kenji

2009-12-01

397

Evaluation of the breeding soundness of male camels (Camelus dromedarius) via clinical examination, semen analysis, ultrasonography and testicular biopsy: a summary of 80 clinical cases.  

PubMed

Male camel infertility is a heterogeneous disorder. A variety of factors may adversely affect sperm production and function and impair fertility. This study was designed to evaluate the sensitivity and specificity of ultrasonography and testicular biopsy in the evaluation of the breeding soundness of male dromedaries compared with results obtained by clinical examination and semen analysis. Eighty-four male dromedary camels (5-15 years old) were used in this study during the rutting season (November-May). Four sexually mature male camels were used as controls. These animals were apparently healthy and had histories of normal fertility. Eighty infertile male camels were subjected to an algorithmic approach based on information collected during careful examinations of the camels' breeding histories, clinical examinations, testicular evaluations, testicular ultrasonographies, the results of the semen analyses and testicular biopsies to diagnose the camels' infertilities. The differences in the semen parameters between the control and infertile male camels were highly significant (p < 0.01). Regarding the diagnoses of male camel infertility, the results of testicular ultrasonographies and biopsies were compared with those from the semen analyses, and the accuracies of these tests were 92.5% and 90%, respectively. Additionally, the results of the testicular ultrasonographies were matched with those of the testicular biopsies of the infertile animals, and this comparison resulted in 85% accuracy. Testicular biopsy is a promising method that, along with a carefully performed history, clinical examination, an appropriate testicular ultrasonography procedure and semen analysis, can afford veterinarians the opportunity for more precise diagnosis and treatment of many dromedary infertility disorders. PMID:25112541

Waheed, M M; Ghoneim, I M; Hassieb, M M; Alsumait, A A

2014-10-01

398

Unenhanced and Contrast-Enhanced Ultrasonography During Hepatic Transarterial Embolization and Chemoembolization With Drug-Eluting Beads  

SciTech Connect

The purpose of this study was to describe and evaluate the findings of unenhanced ultrasonography (US) and contrast-enhanced ultrasonography (CEUS) when these modalities are applied during transarterial embolization (TAE) or transarterial chemoembolization (TACE) of liver tumors. Sixteen tumors (9 hepatocellular carcinomas, 5 metastases from colorectal cancer, and 2 hemangiomas) were treated with TAE with microspheres and/or TACE with drug-eluting beads. All of these lesions were studied with intraprocedural unenhanced US and 12 were studied with intraprocedural CEUS. For the latter, a second-generation echo-enhancer (SonoVue; Bracco, Milan, Italy) and a low mechanical index technique were used. Intraprocedural findings were classified according to an arbitrary scale and were compared with pretreatment imaging (CEUS and computed tomography or CEUS and magnetic resonance imaging), with postembolization angiography, and with follow-up results. On unenhanced intraprocedural US, 13 of 16 tumors demonstrated intralesional high-level echoes of varying extent. These feature correlated poorly (r = 0.33, p = 0.097) with and generally underestimated the actual extent of necrosis. Exceptionally, high-level echoes that occupied the largest part of the treated lesions were associated with >50% tumor necrosis. Intraprocedural CEUS clearly depicted immediate partial or complete disappearance of tumor enhancement as a result of TAE/TACE. Three of 6 tumors with complete devascularization on postembolization angiogram showed residual enhancement on intraprocedural CEUS. Intraprocedural CEUS findings correlated closely (r = 0.91, p = 0.002) with follow-up findings. Intraprocedural sonography, particularly with echo-enhancers, could be used for intraprocedural monitoring in selected cases of liver tumors that undergo TAE or TACE.

Moschouris, Hippocrates, E-mail: hipmosch@gmail.co [General Hospital 'Tzanio', Department of Radiology (Greece); Malagari, Katerina [University of Athens, Second Department of Radiology, 'Attikon' Hospital (Greece); Kornezos, Ioannis; Papadaki, Marina Georgiou [General Hospital 'Tzanio', Department of Radiology (Greece); Gkoutzios, Panagiotis [NHS Foundation Trust, Department of Interventional Radiology, Guy's and St. Thomas' Hospital (United Kingdom); Matsaidonis, Dimitrios [General Hospital 'Tzanio', Department of Radiology (Greece)

2010-12-15

399

Clinician performed resuscitative ultrasonography for the initial evaluation and resuscitation of trauma  

PubMed Central

Background Traumatic injury is a leading cause of morbidity and mortality in developed countries worldwide. Recent studies suggest that many deaths are preventable if injuries are recognized and treated in an expeditious manner – the so called 'golden hour' of trauma. Ultrasound revolutionized the care of the trauma patient with the introduction of the FAST (Focused Assessment with Sonography for Trauma) examination; a rapid assessment of the hemodynamically unstable patient to identify the presence of peritoneal and/or pericardial fluid. Since that time the use of ultrasound has expanded to include a rapid assessment of almost every facet of the trauma patient. As a result, ultrasound is not only viewed as a diagnostic test, but actually as an extension of the physical exam. Methods A review of the medical literature was performed and articles pertaining to ultrasound-assisted assessment of the trauma patient were obtained. The literature selected was based on the preference and clinical expertise of authors. Discussion In this review we explore the benefits and pitfalls of applying resuscitative ultrasound to every aspect of the initial assessment of the critically injured trauma patient. PMID:19660123

Gillman, Lawrence M; Ball, Chad G; Panebianco, Nova; Al-Kadi, Azzam; Kirkpatrick, Andrew W

2009-01-01

400

A comparison between ultrasonographic, surgical and histological assessment of tenosynovits in a cohort of idiopathic carpal tunnel syndrome patients.  

PubMed

Carpal tunnel syndrome (CTS) may be caused by subclinical tenosynovitis which may be detected by ultrasonography (US). The objective of this study is to investigate whether ultrasonography has a place in the workup of idiopathic CTS patients. Therefore, we investigated the prevalence of tenosynovitis and its association with the clinical outcome of surgery. A cohort of 31 consecutive idiopathic CTS patients (33 wrists) who were a candidate for carpal tunnel release (CTR) surgery was assessed using greyscale ultrasonography (GSUS) and power Doppler ultrasonography (PDUS). Peroperatively, tenosynovitis was evaluated macroscopically by the surgeon. Tissue samples from areas macroscopically suspected for tenosynovitis were taken for histological evaluation. The clinical outcome of the operation was assessed after 6 months and if applicable alternative diagnoses for the CTS were proposed. US tenosynovitis (OMERACT) was detected preoperatively in 58 % of the wrists. Peroperatively, macroscopic tenosynovitis was detected visually in 88 % of the wrists. Histological evaluation demonstrated a limited influx of lymphocytes indicative of a mild chronic inflammatory response in 19 %. Non-specific reactive changes were observed in 78 % of the cases. Ultrasonographically defined tenosynovitis was associated with an OR of 2.81 (95 % CI 0.61-13) for responding well to surgery. Most cases of ultrasonographic and peroperatively defined tenosynovitis were classified by histology as reactive changes. The presence of ultrasonographic tenosynovitis might be associated with a better clinical outcome of surgery. PMID:24953659

Ten Cate, David F; Glaser, Nick; Luime, Jolanda J; Lam, King H; Jacobs, Johannes W G; Selles, Ruud; Hazes, Johanna M W; Bertleff, Marietta

2014-06-24

401

Are There Adverse Effects of Herniorrhaphy Techniques on Testicular Perfusion? Evaluation by Color Doppler Ultrasonography  

Microsoft Academic Search

Purpose: To evaluate the efficacy of prosthetic meshes on testicular perfusion using color Doppler ultrasound (CDUS). Materials and Methods: This study is a randomized prospective clinical trial with blind assessment of outcome. A total of 26 patients who underwent elective herniorrhaphy for groin hernia participated in the study. Each patient was randomly assigned to 1 of 2 groups: totally extraperitoneal

Osman Nuri Dilek; Aylin Yucel; Gokhan Akbulut; Bumin Degirmenci

2005-01-01

402

[Contribution of ultrasonography to the diagnosis of non-hormonal acquired clitoromegalia: a case report].  

PubMed

We report the case of a 30-year-old woman, consulting for a painful clitoromegaly which developed progressively and rapidly. The gyneco-endocrinological assessment ruled out hyperandrogenism. Ultrasound examination of the clitoris revealed the presence of a clitoral cyst. Acquired clitoromegaly is a symptom which occurs in severe hyperandrogenism. Other organic etiologies include clitoral cysts of various nature and solid tumors. An ultrasonographic examination should be included in the diagnostic work-up for acquired clitoromegaly. PMID:17194973

Robin, G; Marcelli, F; Agbetra, N; Guerin Du Masgenet, B; Goeusse, P

2006-12-01

403

Feasibility and accuracy of point-of-care pocket-size ultrasonography performed by medical students  

PubMed Central

Background Point-of-care ultrasound performed by clinicians is a useful supplement in the treatment and assessment of patients. We aimed to investigate whether medical students with minimal training were able to successfully acquire and interpret ultrasound images using a pocket-size imaging device (PSID) as a supplement to their clinical practice. Methods Thirty 5th year (of six) medical students volunteered to participate. They were each given a personal PSID device to use as a supplement to their physical examination during their allocated hospital terms. Prior to clinical placement the students were given three evenings of hands-on training with PSID by a board certified radiologist/cardiologist, including three short lectures (<20 min). The students were shown basic ultrasound techniques and taught to assess for basic, clinically relevant pathology. They were specifically instructed to assess for the presence or absence of reduced left ventricular function (assessed as mitral annular excursion?

2014-01-01

404

Microvessel Density: Correlation between Contrast Ultrasonography and Histology of Prostate Cancer  

Microsoft Academic Search

Objective: Increased microvessel density (MVD) of prostate cancer seems to be associated with poor prognosis and higher stage. Assessment of MVD using noninvasive methods could be of use in the work–up of patients with prostate cancer. The aim of the present study was to correlate three–dimensional contrast–enhanced power Doppler ultrasound (3D–CE–PDU) findings with MVD characteristics of radical prostatectomy specimens.Methods: Seven

J. P. Michiel Sedelaar; Geert J. L. H. van Leenders; Henk G. van der Poel; Jeroen A. W. M. van der Laak; Frans M. J. Debruyne; Hessel Wijkstra; Jean J. M. C. H. de la Rosette

2001-01-01

405

Normative Values for Testicular Volume Measured by Ultrasonography in a Normal Population from Infancy to Adolescence  

Microsoft Academic Search

Background\\/Aims: We obtained reference data for testicular volume measured by ultrasound in asymptomatic boys aged 0.5–18 years. In addition, we assessed the validity of the Prader orchidometer per age group by correlating it with the volume measurement by ultrasound. Methods: The study only included healthy boys with two scrotal testes at birth and at the time of the examination. For

J. Goede; W. W. M. Hack; K. Sijstermans; L. M. van der Voort-Doedens; T. Van der Ploeg; A. Meij-de Vries; H. A. Delemarre-van de Waal

2011-01-01

406

Ultrasonographic fetal well-being assessment, neonatal and postpartum findings of cloned pregnancies in cattle: A preliminary study on 10 fetuses and calves  

PubMed Central

Cloned pregnancies in cattle are considered to be at risk due to a variety of fetal or adnexal abnormalities. Data is lacking concerning the possibility of transabdominal ultrasonography in the assessment of these high risk pregnancies. Transabdominal ultrasonography has rarely been reported in the assessment of bovine cloned pregnancies. Ten Holstein heifers carrying 8-month-old cloned fetuses were assessed by transabdominal ultrasonographic examination during the 3rd trimester of pregnancy. Fetal heart rates (FHR), movements, adnexal appearance, and placentome size were recorded. The outcome of the pregnancies was also noted and potential indicators of fetal demise recorded. Survival rate 1 week after birth was 30%. Mean FHR was 113 beats per minute (range: 92 to 128 bpm) during the fetal ultrasonography. No correlation between FHR and fetal activity was found. Fetal hyperactivity and imaging of hyperechoic particles in both allantoic and amniotic fluids were possible signs of fetal distress. Despite the size of the fetus and the deep bovine abdomen, fetal transabdominal ultrasonography can be performed in cattle. This preliminary study points to the necessity of further larger studies for defining normal and abnormal findings in bovine late pregnancy. PMID:19436477

Buczinski, Sébastien; Fecteau, Gilles; Comeau, Geneviève; Boysen, Soren R.; Lefebvre, Réjean C.; Smith, Lawrence C.

2009-01-01

407

Ultrasonography and MRI features of the Mayer-Rokitansky-Küster-Hauser syndrome.  

PubMed

Although Mayer-Rokitansky-Küster-Hauser syndrome is a rare condition with a reported incidence of 1/4500 female live births, it represents the second most common cause of primary amenorrhea and has psychologically devastating consequences. The radiologist plays a pivotal role in both making the accurate initial diagnosis of this condition and assessing findings that may contribute to treatment planning. The purpose of this article is to provide an overview of the capabilities of ultrasound and magnetic resonance imaging (MRI) for the diagnosis and management of this syndrome with emphasis on the relevant clinical and surgical findings and to describe potential associated abnormalities and differential diagnosis. PMID:23725784

Rousset, P; Raudrant, D; Peyron, N; Buy, J-N; Valette, P-J; Hoeffel, C

2013-09-01

408

Healing of Blunt Liver Injury After Non-Operative Management: Role of Ultrasonography Follow-Up  

Microsoft Academic Search

\\u000a Abstract\\u000a \\u000a \\u000a Background:\\u000a   Non-operative management of patients with blunt liver trauma has become the standard of care. Usually after initial computed\\u000a tomography (CT) evaluation and a short-term intra-hospital instrumental and clinical monitoring, no other imaging assessment\\u000a is routinely requested. A restriction of physical activities for a few (unfixed number of) months is the most common recommendation.\\u000a A few studies investigated the

Pietro Padalino; Fabio Bomben; Osvaldo Chiara; Gianguido Montagnolo; Aldo Marini; Mauro Zago; Paola Rebora

2009-01-01

409

Contrast-Enhanced Three Dimensional Ultrasonography supporting HIFU treatment of Small Liver Cancer  

NASA Astrophysics Data System (ADS)

HIFU was carried out in the 12 patients with small hepatocellular carcinoma (small HCC) as a extracorporeal ablation therapy, and clinical availability was studied from the results. In carrying out the HIFU therapy, contrast enhanced (CE) three dimensional (3D) ultrasound imaging played an important role to clarify the tumor nature , to monitor the sonication procedure and to assess the tumor ablation and was almost indispensable for the treatment. All the patient had no serious side effects and they are all alive with no local tumor progression for 3 to 14 months after the treatment. Ultrasound supporting HIFU therapy could be usefully available for the treatment of small HCC.

Ohto, Masao; Fukuda, Hiroyuki; Ito, Ryu; Shinohara, Yasushi; Sakamoto, Akio; Karasawa, Eii

2009-04-01

410

Ultrasonography-guided radiofrequency ablation of malignant musculoskeletal soft-tissue tumors using the "moving-shot" technique at a single-institution experience.  

PubMed

The present study describes the use of the "moving-shot" technique for successful radiofrequency ablation (RFA) of malignant musculoskeletal soft-tissue tumors. Ultrasonography-guided RFA was performed in 6 malignant soft-tissue tumors in 5 patients. Short-term follow-up after RFA (8-27 weeks) showed that complete necrosis was achieved in all lesions, and 5 lesions (83%) decreased in size. Discomfort caused by the tumors decreased subjectively in all patients after ablation. Our results indicate that ultrasonography-guided RFA using the moving-shot technique can be an effective treatment option for locoregional control of malignant soft-tissue tumors. Long-term follow-up studies with a larger number of patients are necessary. PMID:25415868

Kim, Seon-Jeong; Chung, Hye Won; Baek, Jung Hwan; Lee, Jong-Seok; Lee, Sang Hoon; Lee, Min Hee; Shin, Myung Jin

2014-12-01

411

Comparison of contrast-enhanced ultrasonography versus baseline ultrasound and contrast-enhanced computed tomography in metastatic disease of the liver: diagnostic performance and confidence  

Microsoft Academic Search

Aim: The aim of this study was to compare contrast-enhanced ultrasonography (CEUS) to baseline US and contrast-enhanced computed\\u000a tomography (CT) in metastatic disease of the liver diagnosed or suspected by US during presurgical staging or postsurgical\\u000a follow-up for primary malignancies. Materials and methods: Two hundred-fifty-three patients considered suitable for US due to the complete explorability of the liver and with

Emilio Quaia; Mirko D’Onofrio; Alessandro Palumbo; Stefania Rossi; Stefano Bruni; Maria Cova

2006-01-01

412

Ultrasonography-based 2D motion-compensated HIFU sonication integrated with reference-free MR temperature monitoring: a feasibility study ex vivo  

Microsoft Academic Search

Magnetic resonance imaging (MRI) and ultrasonography have been used simultaneously in this ex vivo study for the image-guidance of high intensity focused ultrasound (HIFU) treatment in moving tissue. A ventilator-driven balloon produced periodic and non-rigid (i.e. breathing-like) motion patterns in phantoms. MR-compatible ultrasound (US) imaging enabled near real-time 2D motion tracking based on optical flow detection, while near-harmonic reference-free proton

Vincent Auboiroux; Lorena Petrusca; Magalie Viallon; Thomas Goget; Christoph D Becker; Rares Salomir

2012-01-01

413

Diagnostic Value of Endoscopic Ultrasonography Guided Fine-Needle Aspiration Cytology ofMediastinal Masses in Patients with Intrapulmo nary Lesions and Nondiagnostic Bronchoscopy  

Microsoft Academic Search

Several procedures are available for the cytopathological diagnosis of mediastinal lesions. The purpose of this study was to evaluate the diagnostic value of endoscopic ultrasonography (EUS)-guided fine-needle aspiration (FNA) in patients with mediastinal mass lesions\\/lymph node enlargement. All patients had intrapulmonary lesions on chest X ray and\\/or CT scan, and inconclusive findings by endobronchial forceps biopsy and\\/or brush cytology. EUS-guided

A. Fritscher-Ravens; S. Petrasch; A. Reinacher-Schick; U. Graeven; M. König; W. Schmiegel

1999-01-01

414

Improving mass detection performance by use of 3D difference filter in a whole breast ultrasonography screening system  

NASA Astrophysics Data System (ADS)

Ultrasonography is one of the most important methods for breast cancer screening in Japan. Several mechanical whole breast ultrasound (US) scanners have been developed for mass screening. We have reported a computer-aided detection (CAD) scheme for the detection of masses in whole breast US images. In this study, the method of detecting mass candidates and the method of reducing false positives (FPs) were improved in order to enhance the performance of this scheme. A 3D difference (3DD) filter was newly developed to extract low-intensity regions. The 3DD filter is defined as the difference of pixel values between the current pixel value and the mean pixel value of 17 neighboring pixels. Low-intensity regions were efficiently extracted by use of 3DD filter values, and FPs were reduced using a FP reduction method employing the rule-based technique and quadratic discriminant analysis with the filter values. The performance of our previous and improved CAD schemes indicated a sensitivity of 80.0% with 16.8 FPs and 9.5 FPs per breast, respectively. The FPs of the improved scheme were reduced by 44% as compared to the previous scheme. The 3DD filter was useful for the detection of masses in whole breast US images.

Ikedo, Yuji; Fukuoka, Daisuke; Hara, Takeshi; Fujita, Hiroshi; Takada, Etsuo; Endo, Tokiko; Morita, Takako

2008-03-01

415

Evaluation of Hemodynamics in Focal Steatosis and Focal Spared Lesion of the Liver Using Contrast-Enhanced Ultrasonography with Sonazoid  

PubMed Central

We aim to investigate the hemodynamics in focal steatosis and focal spared lesion of the liver using contrast-enhanced ultrasonography (CEUS) with Sonazoid. The subjects were 47 patients with focal steatosis and focal spared lesion. We evaluated enhancement patterns (hyperenhancement, isoenhancement, and hypoenhancement) in the vascular phase and the presence or absence of a hypoechoic area in the postvascular phase for these lesions using CEUS. Of the 24 patients with focal steatosis, the enhancement pattern was isoenhancement in 19 and hypoenhancement in 5. Hypoechoic areas were noted in the postvascular phase in 3 patients. Of the 23 patients with focal spared lesions, the enhancement pattern was isoenhancement in 18 and hyperenhancement in 5. No hypoechoic areas were noted in the postvascular phase in any patient. The hemodynamics in focal steatosis and focal spared lesions in nondiffuse fatty liver can be observed using low-invasive procedures in real-time by CEUS. It was suggested that differences in the dynamics of enhancement in the vascular phase of CEUS were influenced by the fat deposits in the target lesion, the surrounding liver parenchyma, and the third inflow. PMID:25165582

Shiozawa, Kazue; Ikehara, Takashi; Kogame, Michio; Shinohara, Mie; Shinohara, Masao; Ishii, Koji; Igarashi, Yoshinori; Makino, Hiroyuki

2014-01-01

416

Change of Muscle Architecture following Body Weight Support Treadmill Training for Persons after Subacute Stroke: Evidence from Ultrasonography  

PubMed Central

Although the body weight support treadmill training (BWSTT) in rehabilitation therapy has been appreciated for a long time, the biomechanical effects of this training on muscular system remain unclear. Ultrasonography has been suggested to be a feasible method to measure muscle morphological changes after neurological diseases such as stroke, which may help to enhance the understanding of the mechanism underlying the impaired motor function. This study investigated the muscle architectural changes of tibialis anterior and medial gastrocnemius in patients after subacute stroke by ultrasound. As expected, we found the effect of BWSTT on the muscular system. Specifically, the results showed larger pennation angle and muscle thickness of tibialis anterior and longer fascicle length of medial gastrocnemius after the training. The findings of this study suggest that the early rehabilitation training of BWSTT in subacute stage of stroke provides positive changes of the muscle architecture, leading to the potential improvement of the force generation of the muscle. This may not only help us understand changes of subacute stroke in muscular system but also have clinical implications in the evaluation of rehabilitation training after neurological insults. PMID:24783198

Liu, Peng; Wang, Yanjun; Hu, Huijing; Mao, Yurong; Huang, Dongfeng; Li, Le

2014-01-01

417

Hepatocellular carcinoma treated with transarterial chemoembolization: Evaluation with parametric contrast-enhanced ultrasonography  

PubMed Central

AIM: To evaluate the response of hepatocellular carcinoma (HCC) to transarterial chemoembolization (TACE) using a simplified protocol of parametric contrast-enhanced ultrasound (pCEUS). METHODS: Eighteen patients with HCC (18 target tumors, diameter: 2.8-12 cm) were evaluated before, and 20 d after TACE. The distribution and morphology of TACE-induced necrosis in these tumors precluded accurate evaluation by visual assessment or by simple measurements. For pCEUS, a 4.8 mL bolus of SonoVue (Bracco, Milan, Italy) was intravenously administered and analysis of tumor perfusion during the initial phase of enhancement (0-30 s post injection) was performed with dedicated software (Qontrast, Bracco, Milan, Italy). Time-intensity curves were plotted and three parameters were calculated: peak intensity (PI, in percentage %), time to peak (TTP in seconds, s) and area under the curve during wash-in (AUC-WI, in arbitrary units, a.u). Magnetic resonance imaging was the standard imaging modality for post-treatment evaluation. Changes in tumor size were recorded and response was assessed according to response evaluation criteria in solid tumors criteria. RESULTS: A statistically significant decrease in PI and AUC-WI was observed in the treated tumors post TACE; PIpre: 21.5% ± 8.7% (mean ± SD), PIpost: 12.7% ± 6.7%, P < 0.001, AUC-WI pre: 17493 ± 9563 a.u, AUC-WI post: 9585 ± 5494 a.u, P < 0.001. A slight increase in TTP was noted post TACE, but this was not statistically significant; TTP pre: 13.1 ± 4.3 s, TTP post: 13.6 ± 4.2 s , P = 0.058). The changes in the aforementioned parameters were not accompanied by significant tumor shrinkage. CONCLUSION: pCEUS, even when limited to the study of the arterial phase of tumoral enhancement, can detect and quantify early perfusional changes in HCC post TACE. PMID:22937217

Moschouris, Hippocrates; Malagari, Katerina; Marinis, Athanasios; Kornezos, Ioannis; Stamatiou, Konstantinos; Nikas, Georgios; Papadaki, Marina Georgiou; Gkoutzios, Panagiotis

2012-01-01

418

Transvaginal perfusion of G-CSF for infertile women with thin endometrium in frozen ET program: A non-randomized clinical trial  

PubMed Central

Background: We often see patients with a thin endometrium in ART cycles, in spite of standard and adjuvant treatments. Improving endometrial growth in patients with a thin endometrium is very difficult. Without adequate endometrial thickness these patients, likely, would not have reached embryo transfer. Objective: We planned this study to investigate the efficacy of intrauterine granulocyte colony-stimulating factor (G-CSF) perfusion in improving endometrium, and possibly pregnancy rates in frozen-thawed embryo transfer cycles. Materials and Methods: This is a non-randomized intervention clinical trial. Among 68 infertile patients with thin endometrium (-7 mm) at the 12th-13th cycle day, 34 patients received G-CSF. G-CSF (300 microgram/1mL) to improve endometrial thickness was direct administered by slow intrauterine infusion using IUI catheter. If the endometrium had not reached at least a 7-mm within 48-72 h, a second infusion was given. Endometrial thickness was assessed by serial vaginal ultrasound at the most expanded area of the endometrial stripe. Results: The cycle was cancelled in the patients with thin endometrium (endometrial thickness below 7mm) until 19th cycle day ultimately The cycle cancelation rate owing to thin endometrium was similar in G-CSF group (15.20%), followed by (15.20%) in the control group (p=1.00). The endometrial growth was not different within 2 groups, an improvement was shown between controlled and G-CSF cotreated groups, with chemical (39.30% vs. 14.30%) and clinical pregnancy rates (32.10% vs. 12.00%) although were not significant. Conclusion: Our study fails to demonstrate that G-CSF has the potential to improve endometrial thickness but has the potential to improve chemical and clinical pregnancy rate of the infertile women with thin endometrium in frozen-thawed embryo transfer cycle. PMID:25469123

Eftekhar, Maryam; Sayadi, Mozhgan; Arabjahvani, Farideh

2014-01-01

419

Use of contrast-enhanced ultrasonography in chronic pathologic canine testes.  

PubMed

Contrast-enhanced ultrasound with sulphur hexafluoride microbubbles was performed in seven healthy dogs without a history of reproductive pathology and with histologically confirmed normal testes and in 42 dogs with chronic scrotal anomalies. All dogs underwent orchiectomy and histological examination. Enhancement patterns and perfusion parameters (peak intensity and regional blood flow) of testes of healthy dogs and testes with chronic lesions were compared. Fourteen non-pathologic and 60 pathologic testes were considered. Forty testes were neoplastic (24 interstitial cell tumours, 9 seminomas, 7 Sertoli cell tumours), 20 were non-neoplastic (16 testicular degenerations, 2 chronic orchitis, 1 testicular atrophy, 1 interstitial cell hyperplasia). In healthy dogs, the contrast medium flow had a rapid homogeneous wash-in and wash-out, with a short peak phase. With contrast ultrasound, testes that were inhomogeneous with a hyperenhancing pattern were associated with neoplasia (sensitivity: 87.5%, specificity: 100%). Lesions with persistent inner vessels and a hypo-to-isoechoic background were significantly associated with seminomas (sensitivity: 77.8%, specificity: 100%). Testes with non-neoplastic lesions were characterized by a scant/moderate homogeneous enhancement. Perfusion parameters were higher in neoplastic lesions. Contrast ultrasound was a feasible diagnostic tool in the assessment of testicular lesions, with hyperenhancement being an important feature in the diagnosis of malignancy. PMID:24237178

Volta, A; Manfredi, S; Vignoli, M; Russo, M; England, G C W; Rossi, F; Bigliardi, E; Di Ianni, F; Parmigiani, E; Bresciani, C; Gnudi, G

2014-04-01

420

Skin thickness on bony prominences measured by ultrasonography in patients with spinal cord injury  

PubMed Central

Objective The detailed assessment of soft tissues over bony prominences and identification of methods of predicting pressure sores would improve the quality of care for patients with spinal cord injury (SCI). Comparing skin thicknesses on bony prominences in patients with SCI to those in healthy individuals will represent, to our knowledge, the first study aimed at determining whether differences in skin thicknesses between these groups can be detected by ultrasound. Design In both patients and controls, skin thicknesses on the sites at risk for pressure ulcers – sacrum, greater trochanter, and ischium – were evaluated using high-frequency ultrasound. The waist was also evaluated by the same method for control as it was considered to be a pressure-free region. Participants Thirty-two patients with complete thoracic SCI and 34 able-bodied individuals. Results The skin was significantly thinner over the sacrum and ischial tuberosity in individuals with SCI compared with healthy individuals. No significant differences were observed in skin thicknesses over the greater trochanter or the waist between the two groups. Conclusions Protecting skin integrity in patients with paraplegia is challenging due to many contributing factors, such as prolonged pressure, frictional/shearing forces, and poor nutrition. Thinning of the skin can increase the risk of soft tissue damage, leading to pressure ulcers. The significant differences in skin thickness at the sacrum and ischium provide the basis for establishing the early signs of pressure damage. Measuring skin thickness by ultrasound is a reliable non-invasive method that could be a promising tool for predicting pressure ulcers. PMID:23809593

Yalcin, Elif; Akyuz, Mufit; Onder, Burcu; Unalan, Halil; Degirmenci, Ibrahim

2013-01-01

421

Sonographic assessment of fatty liver: intraobserver and interobserver variability  

PubMed Central

Non-alcoholic fatty liver disease (NAFLD) is a common liver disease worldwide and ultrasonography is widely used in the diagnosis and the follow-up we purposed to assess intraobserver and interobserver variability in the sonographic evaluation of the existence and steatosis grades of NAFLD. Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) levels and AST to ALT (AST/ALT) ratio were compared between the grades of hepatosteatosis. Hepatic ultrasonography (US) examinations consisted of 5-10 static images of 113 successive adult patients, whose records were in the picture archiving and communication system (PACS) of our hospital were retrospectively evaluated by two experienced radiologists. Hepatic images were graded into 4 groups; as normal, mild, moderate or severe hepatic steatosis. Evaluation of hepatic steatosis of the same set of images was repeated after one month under the same conditions. Interobserver and intraobserver agreement was assessed by using kappa (?) statistics. In each group, the percentage of individuals with high ALT and/or AST, or AST/ALT ratio over 1 was calculated. The intraobserver agreement was 51%, fair kappa (?=0.356) for observer 1; and 68%, moderate (?=0.591) for observer 2. The interobserver agreements in the initial and second readings were 39% and 40%, fair (?=0.208) and (?=0.225), respectively. Elevations of ALT and/or AST levels were similar between groups depending on the degree of hepatosteatosis among the patients. Visual assessment of NAFLD by ultrasonography has substantial interobserver variability, and reproducibility of results is limited. More objective imaging modalities are needed to evaluate the degree of hepatosteatosis. PMID:25664055

Cengiz, Mustafa; Sentürk, Senem; Cetin, Bulent; Bayrak, Aylin Hasanefendio?lu; Bilek, Senem Uysal

2014-01-01

422

Contrast-enhanced ultrasonography in nodular splenomegaly associated with type B Niemann–Pick disease: an atypical hemangioma enhancement pattern  

PubMed Central

Introduction Niemann–Pick disease (NPD) types A and B are lipid storage disorders. NPD type A is a fatal disorder of infancy. Type B is a non-neuronopathic form observed in children and adults. It is associated with enlargement of the liver, spleen, or both, and nodular splenomegaly may be detected with ultrasound. Methods A 21-year-old female was admitted to the Emergency Room with fever, pharyngitis, and left upper quadrant abdominal pain. Labwork revealed anemia, thrombocytopenia, increased levels of AST, ALT, GGT, AF, LDH, triglycerides, and total cholesterol and low levels of HDL-cholesterol. PCR blood assays for CMV and EBV were both negative. Chest X-ray was unremarkable. Transabdominal B-mode ultrasound (US) revealed splenomegaly (long axis: >22 cm), an irregular subcapsular hypoechoic lesion in the superior pole that was consistent with splenic infarction, and multiple round highly echogenic nodes measuring 1–5 cm in diameter. Contrast-enhanced ultrasonography (CEUS) was performed using SonoVue® (Bracco). Results The presence of a splenic infarction was confirmed. The nodular lesions showed arterial-phase enhancement with late parenchymal phase wash-out. 18F-FDG-PET revealed splenic nodular uptake. Primary splenic lymphoma was suspected, and the patient underwent open splenectomy. The diagnosis was type B NPD with splenic hemangiomas. Discussion CEUS confirmed the diagnosis and extent of splenic infarction, but the nodular atypical enhancement pattern together with nodular 18F-FDG-PET uptake was misleading, suggesting as it did lymphoproliferative involvement of the spleen. PMID:23396497

Benedetti, E.; Proietti, A.; Miccoli, P.; Basolo, F.; Ciancia, E.; Erba, P.A.; Galimberti, S.; Orsitto, E.; Petrini, M.

2009-01-01