This abdominal CT scan shows tumor masses (malignant lymphomas) in the area behind the peritoneal cavity (retroperitoneal ...

... tomography (CT) or sometimes ultrasound scanning or magnetic resonance imaging (MRI). These tests can help distinguish an ...

... abdomen showing a large tumor mass due to metastasis (spreading cancer) in abdominal lymph nodes.

This abdominal CT scan shows multiple cysts in the liver and spleen. Note the dark circular cyst in the liver (left side of screen) and the large, irregular, circular ...

This abdominal CT scan shows cysts in the liver and kidneys (polycystic disease). The liver is the large organ on the left side of the screen. The ...

This image depicts Intussusception. Intussusception can be found in an abdominal CT. The CT may show nothing if early in the disease or may show a perforation, an obstruction, or a soft tissue mass.Annotated: falseRadiograph type: CT

images of abdominal aortic aneurysms have been segmented to determine the location of aorta of aorta in order to plan treatment. Diagnostic procedure in such cases includes taking CT scan of the abdominal region. After the images are obtained it is necessary to determine the location of aorta

CT delivers a large dose of radiation, especially in abdominal imaging. Recently, a low-dose abdominal CT protocol (low-dose CT) has been set-up in our institution. "Low-dose CT" is almost equivalent to a single standard abdominal ...

In this paper, a normalized abdominal coordinate system is defined for abdominal atlas mapping in CT and MR volume images. This coordinate system is independent of both the abdomen size and the respiratory motion. A real-time atlas mapping algorithm based on this coordinate system is also proposed. The purpose of ...

The study proposed a mini medical image system with content index for image retrieval which content indices include de size orientation compactness and edge characteristics of an image object. The system was built with abdominal CT images as testing mater...

A 7-year-old boy presented with increasing abdominal girth and abdominal pain. Abdominal ultrasound revealed a pleural effusion and ascites. Computed tomography (CT) demonstrated a mass involving the peritoneum, mesentery, and omentum with marked ascites, mesenteric nodules, and renal involvement. Positron emission ...

Computed tomography (CT) has been used to detect a variety of gallbladder abnormalities, but the accuracy of routine abdominal CT in evaluating intracholecystic bile has not been established. Forty-six patients were identified in whom abdominal CT and sonography were performed within 1 week of ...

A retrospective analysis of the results of /sup 67/Ga citrate radionuclide imaging and computed tomography (CT) in 45 patients with suspected abdominal abscess was conducted to determine the merits of each method. Both techniques were highly sensitive in detecting abdominal abscesses, and often provided ...

As less-invasive treatments for small bowel obstruction, such as laparoscopic surgery or small incision therapy, have become common, there is a growing demand for preoperative assessment of the cause and location of the small bowel obstruction. Thus, the role of computed tomography (CT) in the evaluation of small bowel obstruction is expanding. CT ...

An 80-year-old woman, who had suffered from end-stage renal disease under peritoneal dialysis, was presented with intermittent fever, leukocytosis, and elevated C-reactive protein for 4 months. She did not have symptom of abdominal pain. Culture of ascites showed Klebsiella pneumoniae. Abdominal utrasonography was negative. Whole-body gallium-67 ...

The aim of this study was to provide a detailed anatomic atlas of the cranial abdomen by means of computed tomography (CT). Three mature dogs, all mixed breed males, were used. The dogs were sedated, anaesthetized and positioned in sternal recumbency. CT scans from the eighth thoracic vertebra to the fourth lumbar vertebra were performed using a ...

The dramatic increase of diagnostic imaging capabilities over the past decade has contributed to increased radiation exposure to patient populations. Several factors have contributed to the increase in imaging procedures: wider availability of imaging modalities, increase in technical capabilities, rise in demand by patients and ...

Obesity has become widespread in America and has been associated as a risk factor for many illnesses. Adipose tissue (AT) content, especially visceral AT (VAT), is an important indicator for risks of many disorders, including heart disease and diabetes. Measuring adipose tissue (AT) with traditional means is often unreliable and inaccurate. CT provides a means to measure AT ...

The aim of this study was to report successful surgical management of an inflammatory abdominal aortic aneurysm associated with a retroaortic left renal vein. The patient, a 78-year-old man, presented with diffuse abdominal pain, fever, and constipation. Contrast-enhanced computed tomography showed soft tissue surrounding the aneurysm and a left renal vein ...

BackgroundTo assess patterns of use of abdominal imaging in the emergency department (ED) from 1990 to 2009.MethodsWe retrospectively reviewed data on adult ED patients treated between 1990 and 2009 at our university-affiliated quaternary care institution. Examinations were coded by abdominal imaging modality: ...

It is known that the spleen accompanied by liver cirrhosis is hypertrophied or enlarged. We have examined a wave pattern at the left boundary of spleen on the abdominal CT images having liver cirrhosis, and found that they are different from those on the images having a normal liver. It is noticed that the ...

This book contains a wealth of radiologic images of normal human anatomy; plain radiographs, contrast-enhanced radiographs, and computed tomography (CT) scans. There are 18 pages of magnetic resonance (MR) images, most on the brain and spinal cord, so that there are only two pages on MR imaging of the heart and two ...

, Abdominal Imaging: CT, Ultrasound, and MRI, New York University Medical Center, New York, NY 1991 - 1992 Paper on Cross Sectional Imaging � SCBT/MR � "Rapid Body MRI Using IDEAL Water-fat Separation. Abdominal MR imaging with a volumetric interpolated breath-hold ...

Abdominal wall metastases from colorectal cancer (CRC) may be resected with curative results. Such lesions, often indicators of additional intra-abdominal lesions, may appear in surgical scars, stomas and port site metastases after laparoscope-assisted surgery (LAS). Post-operative changes, primarily surgical scars, alter local physical findings making ...

In this paper, a new method of body fat and its distribution testing is proposed based on CT image processing. As it is more sensitive to slight differences in attenuation than standard radiography, CT depicts the soft tissues with better clarity. And body fat has a distinct grayness range compared with its neighboring tissues in a ...

Magnetic resonance imaging (MRI) of the abdomen presents greater inherent difficulties than other anatomic regions. However, new techniques now allow imaging comparable in quality to computed tomography (CT). Magnetic resonance imaging offers the advantages of greater tissue contrast, multiplanar ...

Abdominal cerebrospinal fluid pseudocyst is an uncommon complication of using ventriculoperitoneal shunt (VPS). Although many cases have been reported in children, abdominal pseudocysts are rare in adult patients. The purpose of this article is to describe and illustrate the findings for this condition on commonly used abdominal ...

A 52-year-old woman with acute deterioration of recurrent abdominal pain was admitted to the hospital. Spiral computed tomography (CT) of abdomen was performed. A left paraduodenal hernia was identified on CT. There was no clinical sign or imaging finding suggesting intestinal obstruction or mesenteric ischemia. ...

A method is described for labeling CT images with their respiratory state by a needle, connected to the patient's chest/abdomen. By means of a leverage the needle follows the abdominal respiratory motion. The needle is visible as a blurred spot in every CT slice. The method was tested with nine patients. A ...

The fundamental cause of metabolic syndrome is thought to be abdominal obesity. Accurate diagnosis of abdominal obesity can be done by an x-ray computed tomography (CT) scan. But CT is expensive, bulky and entails the risks involved with radiation. To overcome such disadvantages, we attempted to develop a measuring ...

F-18 fluorodeoxyglucose (FDG)-PET-CT is increasingly used in the management of patients with ovarian cancer. However, there is a considerable overlap in the imaging features of malignant and benign ovarian lesions because physiological FDG-uptake in the ovaries can occur, depending on the menstrual cycle in premenopausal women.We present a case of FDG ...

... causing serious illness. Causes The leading but unproven theory is that a low-fiber diet causes diverticular ... or a blockage. Imaging tests, including CT scan, X-ray, abdominal ultrasound, or barium enema. These tests ...

An unusual case of ovarian carcinoma is presented with extra-abdominal soft tissue metastasis. These demonstrate calcification on plain films and CT, as well as avid uptake of Tc-99m MDP.

In general, the spleen accompanied by abnormal abdomen is hypertrophied. However, if the spleen size is originally small, it is hard to detect the splenic enlargement due to abnormal abdomen by simply measure the size. On the contrary, the spleen size of a person having a normal abdomen may be large by nature. Therefore, measuring the size of spleen is not a reliable diagnostic measure of its ...

Functional abdominal disorders are predominantly diagnosed on the basis of a thorough history and clinical examination. It is a challenge to clinicians to define the adequate place of imaging studies in order to rule out relevant organic disease. In functional dyspepsia, oesphago-gastroduodensoscopy and abdominal ultrasound are widely ...

In the unoperated abdomen the anatomic information supplied by CT scanning is usually conducive to a correct diagnosis. The situation is somewhat different in the postoperative patient. Changes in anatomic relationships, loss of landmarks, artifacts, ''ghosts'' and fluid accumulations at times make it necessary to complement the anatomic ...

Major additional pathology, in the abdomen or directly related to the aneurysm itself, which influenced surgical management was demonstrated in 39 (34.5%) of 113 patients with suspected abdominal aortic aneurysm who had undergone pre-operative assessment with computed tomography (CT). Major additional pathology within the abdomen was shown in 11 (9.7%) and ...

Window setting is a very important technique in CT examinations. However, most beginner technologists have difficulty in setting the optimal window. Now, thanks to technical progress, it is easy to obtain a great many CT images. On the other hand, it is impossible to provide the optimal window setting for all ...

Recently, several techniques have been developed to improve the quality of computed tomography (CT) images of the thoracic and abdominal region that are degraded by the interference of the scanning process and respiration. Several devices for respiratory-correlated CT are available for clinical usage. They are ...

Streaking artefacts in computed tomography (CT) can be caused by photon starvation caused by highly attenuating regions. Patient positioning can influence the attenuation e.g. by arms raised or down in an abdominal CT scan. Positioning the arms alongside the body increases attenuation, therefore higher dose can be expected. ...

We developed a cone-beam computed tomography (CBCT) system equipped with a large flat-panel detector. Data obtained by 200{sup o} rotation imaging are reconstructed by means of CBCT to generate three-dimensional images. We report the use of CBCT angiography using CBCT in 10 patients with 8 liver malignancies and 2 hypersplenisms during ...

Purpose: Three-dimensional (3D)intraoperative ultrasound may be easier to interpret when used in combination with less noisy preoperative image data such as CT. The purpose of this study was to evaluate the use of preoperative image data in a 3D ultrasound-based navigation system specially designed for minimally invasive ...

¹⁸F-fluorodeoxyglucose positron emission/computed tomography (¹⁸F-FDG PET/CT) imaging, an established procedure for evaluation of malignancy, shows an increased ¹⁸F-FDG uptake in inflammatory conditions. We present three patients with abdominal pain and weight loss. ...

Three-dimensional micro-computed tomography (microCT) offers the opportunity to capture images liver structures and lesions in mice with a high spatial resolution. Non-invasive microCT allows for accurate calculation of vessel tortuosity and density, as well as liver lesion volume and distribution. Longitudinal monitoring of liver ...

Abdominal wall endometriosis is unusual and mostly occurs in scars following Cesarean section. Although malignant transformation is rare, it must be recognized in order to benefit from radical resection. We report a very rare case of mixed endometrioid and serous carcinoma developing in a Cesarean section endometriosis scar and the way we managed it using surgery and ...

A hemophiliac with a self-inflicted abdominal stab wound was evaluated with computerized tomography, ultrasound, and technetium-99m labeled red blood cell (Tc-99m RBC) imaging. A large intra-abdominal hematoma was best defined by CT and ultrasound; however, continued bleeding, indicating the need for emergency ...

This book covers the musculoskeletal envelope of the internal viscera as seen in cross section on computed tomographic (CT), magnetic resonance (MR), and ultrasound images. The contents proceed on the basis of anatomic areas, from the axilla and supraclavicular fossa, through the thoracic and abdominal wall and paraspinal musculature, ...

Loss of SAT and an increase in VAT are common with HIV lipodystrophy. Excess abdominal VAT is a known risk factor for cardiovascular disease. Computerized axial tomography (CT) can be used to measure SAT and VAT areas in cross-sectional images of the abdomen. The ideal site(s) and number of abdomina...

BackgroundSurgery has become heavily dependent on accurate imaging in the assessment and treatment of suspected or confirmed intra-abdominal malignancy. Positron emission tomography-computed tomography (PET-CT) fuses uptake of a radiotracer combined with CT images to assess both functional ...

We present the case of a 64-year-old woman who suffered from occasional right upper abdominal pain for several months. Both abdominal ultrasonography and magnetic resonance imaging showed a hepatic mass of indeterminate nature. F-18 FDG PET/CT showed a solitary hypermetabolic mass in the liver; a malignancy was ...

A team has developed an improved resolution ultrasound system for low cost diagnostics. This paper describes the development of an ultrasound based imaging system capable of generating 3D images showing surface and subsurface tissue and bone structures. We include results of a comparative study between images obtained from X-Ray ...

The case of a 39-year-old male patient with symptoms of persistent abdominal pain and melena, affected by Henoch-Sch�nlein purpura, is reported. Abdominal CT was requested. The examination was justified by the fact that symptoms could be correlated with other pathological conditions (volvulus, neoplasms, Chron's disease, etc.) which ...

A 63-year-old male patient suddenly suffered right lower abdominal pain. The patient had tenderness and rebound tenderness at the right lower abdomen. Marked small bowel dilatation and an intestinal obstruction were evident upon abdominal X-ray and abdominal computed tomography (CT) imaging. ...

The evaluation of patients with suspected abdominal abscesses begins with a history and careful physical examination. Gallium-67 (/sup 67/Ga) scintigraphy, ultrasonography (US), and computed tomography (CT) are utilized only after other routine investigations have failed to localize the abscess. All three modalities are reliable for the detection of ...

Endoleak is a common complication of endovascular aneurysm repair (EVAR). In the present article, the authors review current surveillance strategies for detection of endoleak after EVAR of abdominal aortic aneurysms. PMID:18502384

Hepatic arterial infusion (HAI) chemotherapy is effective for treating primary and metastatic carcinoma of the liver. We compared the perfusion patterns of HAI chemotherapy on intra-arterial port-catheter computed tomography (iapc-CT) and fused images obtained with a combined single-photon emission computed tomography/computed tomography ...

Cross-sectional imaging of the abdomen in oncology patients presents unique challenges and opportunities. A close working relationship between the oncologist and radiologist is essential for the exchange of the clinical and imaging information necessary for optimizing patient diagnosis and management. Compared to helical computed tomography ...

It has been clarified that abdominal visceral fat accumulation is closely associated to the lifestyle disease and metabolic syndrome. The gold standard in medical fields is visceral fat area measured by an X-ray computer tomography (CT) scan or magnetic resonance imaging. However, their measurements are high invasive and high cost; ...

With today's advanced technology, the clinician and radiologist have a number of techniques with which to evaluate the abdomen for fluid collections and/or abscesses. Three points are clear from the plethora of literature concerning this subject: the need to individualize the clinical and imaging approach to each patient suspected of an abnormal fluid collection or ...

PurposeTo quantify the type, frequency and magnitude of artifacts in four-dimensional (4D) CT images acquired using a multislice cine method.Methods and MaterialsFifty consecutive patients, who underwent 4D-CT scanning and radiotherapy for thoracic or abdominal cancers, were included in this study. All the ...

Purpose: To quantify the type, frequency, and magnitude of artifacts in four-dimensional (4D) CT images acquired using a multislice cine method. Methods and Materials: Fifty consecutive patients who underwent 4D-CT scanning and radiotherapy for thoracic or abdominal cancers were included in this study. All the ...

: In this paper we present a method for segmentation of medical images based on a deformable contour paradigm. The deformable contour is a novel approach in image segmentation and has some advantages over classical segmentation methods such as region basedoredge mased methods. We are using the level set inplementation of the deformable contour paradigm. ...

Clinical indications and utilization patterns for 3963 CT scans on 2500 consecutive patents on a 320-detector row CT in an outpatient setting were retrospectively analyzed and compared with previously reported CT studies. The impact of the latest generation CT technology, including whole organ perfusion, on ...

Accurate registration of the corresponding non-enhanced and arterial-phase CT images is necessary to create temporal and dynamic subtraction images for the enhancement of subtle abnormalities. However, respiratory movement causes misregistration at the periphery of the liver. To reduce these misregistration errors, we developed a ...

It is often difficult for radiologists to identify small hepatocellular carcinomas (HCCs) due to insufficient contrast enhancement. Therefore, we have developed a new computer-aided temporal and dynamic subtraction technique to enhance small HCCs, after automatically selecting images set at the same anatomical position from the present (non-enhanced and arterial-phase ...

BackgroundClinical evaluation alone is still considered adequate by many clinicians who treat patients with appendicitis. The impact of computed tomography (CT) on clinical outcomes remains unclear, and there is no consensus regarding the appropriate use of CT in these patients. We sought to evaluate the impact of abdominal ...

Forty-one patients admitted to our hospital during an 18-month period with the clinical diagnosis of colonic diverticulitis were analyzed to evaluate the utility of computed tomography (CT). Abdominal pain and leukocytosis were the most common presenting manifestations, 75 and 66%, respectively. Just over one-half of the patients also demonstrated ...

A 70-year-old man with past history of hemicolectomy due to colon cancer underwent a follow-up abdominal/pelvic CT scan. CT revealed a right adrenal metastasis and then he underwent FDG-PET/CT study to search for other possible tumor recurrence. In PET images, other than right adrenal gland, ...

Many malignant processes cause abdominal lymphadenopathy, and computed tomography (CT) has become the primary modality for its detection. A lymph node is considered enlarged (swollen) if it is more than 1 centimeter in diameter. Which lymph nodes are swollen depends on the type of disease and the body parts involved. Identifying their locations is very ...

In recent years more and more computer aided diagnosis (CAD) systems are being used routinely in hospitals. Image-based knowledge discovery plays important roles in many CAD applications, which have great potential to be integrated into the next-generation picture archiving and communication systems (PACS). Robust medical image segmentation tools are ...

The segmentation and three-dimensional representation of the liver from a computed tomography (CT) scan is an important step in many medical applications, such as in the surgical planning for a living-donor liver transplant and in the automatic detection and documentation of pathological states. A method is being developed to automatically extract liver structure from ...

One hundred twenty-one patients with newly diagnosed, previously untreated Hodgkin disease underwent abdominal and pelvic computed tomographic (CT) scanning and bipedal lymphography. These studies were followed by staging laparotomy, which included biopsy of the liver, retroperitoneal and mesenteric lymph nodes, and splenectomy. Correlation of the results ...

It is important to diagnose retroaortic left renal vein (RLRV) before a probable retroperitoneal surgery in a case of a suspicious adrenal mass. Our purpose is to present the ultrasonography (US), computed tomography (CT), and magnetic resonance imaging (MRI) findings in a case of left adrenal adenoma with a coincidental RLRV and to discuss the clinical ...

It is important to diagnose retroaortic left renal vein (RLRV) before a probable retroperitoneal surgery in a case of a suspicious adrenal mass. Our purpose is to present the ultrasonography (US), computed tomography (CT), and magnetic resonance imaging (MRI) findings in a case of left adrenal adenoma with a coincidental RLRV and to discuss the clinical ...

The measurement of the abdominal girth may be helpful in diagnosing abdominal distention, which commonly results from intestinal gas. ...

The book can be conveniently subdivided into three sections: the first on magnetic resonance imaging the second on cine-computed tomography and the third on advances in ultrasound (US). The MR imaging section includes two chapters: the first on indications for MR in abdominal disease (a cookbook layout of indications for MR ...

Cardiac computed tomography (CT) is emerging as an important tool for the diagnosis and monitoring of heart disease. The prevalence of heart disease in the United States is already quite high and is expected to increase as the "baby boomer" segment of the population ages. To use complex multiple-row detector CT scanners most efficiently for cardiac ...

To enhance the information provided by computed tomography (CT) and single photon emission computed tomography (SPECT) performed with radiolabeled, anti-carcinoembryonic antigen monoclonal antibody (MoAb), the authors performed fusion of these types of images from eight subjects with suspected colorectal adenocarcinoma. Section thickness and pixel size of ...

The caudate lobe of the liver is divided inferiorly into a lateral caudate process and a medial papillary process. Below the porta hepatis, the papillary process may appear separate from the liver on transverse sectional images. A normal-size or small papillary process may be mistaken for enlarged porta hepatis nodes on computed tomographic (CT) scans, ...

Restaging of Hodgkin's disease and non-Hodgkin lymphoma for chemotherapy traditionally requires chest radiograph and abdominal computerized tomogram (CT) for routine follow-up examination. Although gallium scanning has had a poor record in the past, recent studies suggest that improved techniques have given this method high sensitivity. We present ...

A group of computed tomography (CT) descriptors were derived for abdominal aortic aneurysms. Terminology was defined and applied to the interpretation of the CT image in 55 prospective cases. Correlation of geometric parameters of aneurysm and analysis of the relationship of internal aneurysm components such as ...

With 6 figures SUMMARY: The pudu (Pudu puda), which is the smallest deer in the world and inhabits central and southern Chile and Argentina, is a ruminant and a browsing herbivore. The aim of this study was to provide a reference for interpretation of the normal anatomy of the pudu's gastrointestinal tract as imaged by abdominal computed tomography ...

Abdominal aortic aneurysm involves a widening, stretching, or ballooning of the aorta. There are several causes of abdominal aortic aneurysm, ...

We report herein the cases of two patients with major venous anomalies associated with abdominal aneurysmectomy, one being an isolated left-sided vena cava and the other, a retroaortic left renal vein, and discuss the clinical significance of such anomalies. In the first patient, an isolated left-sided vena cava was correctly diagnosed preoperatively by contrast-enhanced ...

Dual-energy imaging is a promising new development in computed tomography (CT) that has the potential to improve lesion detection and characterization beyond levels currently achievable with conventional CT techniques. In dual-energy CT (DECT), the simultaneous use of two different energy settings allows the ...

Many malignant processes cause abdominal lymphadenopathy, and computed tomography (CT) has become the primary modality for its detection. A lymph node is considered enlarged (swollen) if it is more than 1 centimeter in diameter. Which lymph nodes are swollen depends on the type of disease and the body parts involved. Identifying their locations is very ...

A case of non-Hodgkin's lymphoma of the abdomen studied by gallium SPECT imaging is reported. The tomographic slices accurately demonstrated the location of residual disease after chemotherapy in the region of the transverse mesocolon. Previous transmission CT had shown considerable persistent retroperitoneal lymphadenopathy, but was not helpful ...

A 46 year-old white male with fever of unknown origin demonstrated a multiloculated hepatic cyst on abdominal CT. Persistent fever and leukocytosis prompted Tc-99m sulfur colloid liver-spleen and gallium-67 citrate imaging to identify a possible liver abscess. SPECT imaging provided pertinent clinical information ...

The association of a retroaortic left renal vein and an abdominal aortic aneurysm (AAA) fistula is an infrequent event. We present two cases of AAA rupture into the retroaortic left renal vein. Preoperative computed tomography (CT) assessment showed retroperitoneal bleeding due to a large AAA rupture with an associated unusual retroaortic left renal vein. ...

Radiofrequency ablation (RFA) is emerging as the primary mode of treatment of unresectable malignant liver tumors. With current intraoperative imaging modalities, quick, precise, and complete localization of lesions remains a challenge for liver RFA. Fusion of intraoperative CT and preoperative PET images, which relies on PET and ...

Post-cholecystectomy syndrome (PCS) is a common manifestation in patients with cholecystectomy. The patients exhibit a heterogeneous group of symptoms, such as upper abdominal pain, vomiting, gastrointestinal disorders, jaundice, and dyspepsia. Choledocholithiasis, biliary dyskinesia, and dilation of cystic duct remnants are common causes of these symptoms. The symptoms can ...

Post-cholecystectomy syndrome (PCS) is a common manifestation in patients with cholecystectomy. The patients exhibit a heterogeneous group of symptoms, such as upper abdominal pain, vomiting, gastrointestinal disorders, jaundice, and dyspepsia. Choledocholithiasis, biliary dyskinesia, and dilation of cystic duct remnants are common causes of these symptoms. The symptoms can ...

A 58 year old female was referred for FDG-PET/CT for restaging of endometrial adenocarcinoma. For evaluation of treatment, no metastases were detected on FDG-PET/CT which was performed 18 months later after the surgery. During follow-up, FDG-PET/CT was performed 6 months later than the previous FDG-PET/CT for ...

OBJECTIVE: The purpose of this study was to evaluate the accuracy of abdominal ultrasonography (US) for screening and grading pediatric splenic injury. SUMMARY BACKGROUND DATA: The use of abdominal US has increased rapidly as a method of evaluating organ damage after blunt abdominal trauma. Despite US's increasing use, little is known ...

During the performance of high-resolution real-time abdominal sonography, small echogenic hepatic masses are frequently discovered. A second imaging test to confirm the suspected diagnosis of hemangioma is often required. Planar labeled red-cell imaging will often not detect hemangiomas smaller than 3 cm. We studied 14 patients with ...

Hepatic splenosis refers to heterotopic auto-transplantation and implantation of splenic tissue resulting from the spillage of cells from the spleen after splenic trauma or splenectomy. The true incidence of splenosis is unknown, because this entity is usually an incidental finding at surgery. Splenic implants are usually multiple, and can be localized anywhere in the peritoneal cavity. Splenic ...

While classic teaching dictates computed tomography (CT) for postoperative abdominal or pelvic abscess in the first week is of low yield, little evidence supports intentional delays in imaging for suspected abscess. This retrospective review examined all CT scans obtained for clinical suspicion of abscess between 3 ...

This study was performed to prospectively investigate the impact of image fusion in resolving discrepant findings between fluorine-18 fluorodeoxyglucose positron emission tomography (FDG-PET) and magnetic resonance imaging (MRI) or X-ray computed tomography (CT) in patients with gynaecological cancers. Discrepant findings were defined ...

To determine the added value of reimaging the female pelvis with ultrasound (US) immediately following multidetector CT (MDCT) in the emergent setting. CT and US exams of 70 patients who underwent MDCT for evaluation of abdominal/pelvic pain followed by pelvic ultrasound within 48�h were retrospectively reviewed by three readers. ...

A 90-year-old woman was admitted to the emergency department of our hospital with abdominal pain and a fever of up to 39�C. She had a history of hysterectomy about 30 years previously, and redness and swelling were seen at the abdominal median scar. Serum biochemistry showed minor elevation of C-reactive protein and creatine phosphokinase. ...

C-Arm cone-beam computed tomography (CACT), is a relatively new technique that uses data acquired with a flat-panel detector C-arm angiography system during an interventional procedure to reconstruct CT-like images. The purpose of this Technical Note is to present the technique, feasibility, and added value of CACT in five patients who underwent ...

A 35-year-old man was delivered to the emergency room complaining of right flank pain because of blunt abdominal trauma sustained while playing baseball. Enhanced computed tomography (CT) revealed a right adrenal mass and fluid collection around the mass. We diagnosed the mass as pheochromocytoma by endocrinological examination and radioisotopical ...

We present a case of a 48-year-old female with a history of cholecystectomy and recurrent attacks of pancreatitis whose initial abdominal sonography (US) revealed multiple conglomerated stones in the descending part of the duodenum. Abdominal CT, MRI, and magnetic resonance cholangiopancreatography showed the same findings. The ...

OverviewThe horseshoe kidney is more prone to blunt abdominal trauma because of its low position and the presence of the isthmus across the midline. This is a rare case of complete transection of a horseshoe kidney at the isthmus due to blunt abdominal trauma with two sites of active extravasation on initial CT ...

A 46-year-old gentleman presented to our hospital with a short story of abdominal pain and distension. On examination, gross ascites was noted and confirmed on subsequent imaging with no other notable features. CT scan after ascitic drainage showed a cystic mass extending from the lower pole of the spleen to the left iliac fossa in ...

Three hundred patients who had sustained blunt abdominal injury were evaluated with computed tomography (CT). The images showed areas of hemorrhage by varying attenuation coefficients. Small hematomas tended to accumulate near the site of origin while free intraperitoneal bleeding most frequently accumulated in the Morison pouch, ...

Twenty-five patients with nonseminomatous germ cell carcinoma of the testis underwent CT and nuclear magnetic resonance (NMR) of the retroperitoneum followed by radical retroperitoneal lymph node dissection for surgical proof of metastatic disease. Computed tomography correctly predicted the presence or absence of adenopathy in 88% and assigned the correct stage in 84%. ...

Brachial plexus injury in a patient under general anesthesia (GA) is not uncommon, despite careful positioning and, particularly, awareness of the possibility. The mechanism of injury is stretching and compression of the brachial plexus over a prolonged period. Positioning the patient within the computed tomography (CT) gantry for abdominal or chest ...

A retrospective study was performed to assess whether lymphangiography and gallium-67 scanning were complementary to computed tomography (CT) in abdominal staging of disease in 94 patients with early-stage thoracic Hodgkin disease. In 51 patients with surgical or follow-up correlation, the spleen was involved in 16% (n = 8), the spleen and lymph nodes in ...

Although lymphography may be more accurate in assessing the extent of abdominal and pelvic Hodgkin's lymphoma, computed tomography (CT) has similar or greater overall accuracy than other imaging modalities in detecting malignant lymph nodes in the neck, chest, abdomen and pelvis. In this early stage of magnetic resonance (MR) ...

Cross-sectional imaging, in particular CT, has become the main method of detecting abdominal collections. Indium-labelled white-cell scintigraphy and gallium scintigraphy are reserved for patients in whom there is a high clinical suspicion of abdominal sepsis but CT has not revealed a source of ...

This retrospective study of 144 patients was made to (a) assess the potential of magnetic resonance (MR) for demonstrating lymph nodes using spin-echo technique, (b) compare the MR results with those of CT, and (c) determine the optimal pulse-delay time (TE) for imaging lymph nodes. The reported CT findings on normal lymph nodes were ...

Purpose: To measure respiration-induced abdominal organ motion using four-dimensional computed tomography (4D CT) scanning and to examine the organ paths. Methods and Materials: During 4D CT scanning, consecutive CT images are acquired of the patient at each couch position. Simultaneously, the ...

Stereotactic body radiotherapy (SBRT) can be used to treat small lesions in the chest. A vacuum-based immobilization system is used in our clinic for SBRT, and a motion envelope is used in treatment planning. The purpose of this study is to automatically derive motion envelopes using deformable image registration of 4D-CT images, and ...

ObjectiveThe purpose of this study was to evaluate any improvement in the quality of abdominal CTs after the utilization of the nationally based accreditation program.Materials and MethodsApproval was obtained from the Institutional Review Board, and informed consent was waived. We retrospectively analyzed 1,011 outside abdominal CTs, from 2003 to 2007. We ...

The usefulness of computed tomography (CT) in diagnosing abdominal abscesses was evaluated prospectively in 69 septic patients who had suffered massive trauma. For the 82 abdominal CT scans obtained, the accuracy rate was 84%, the sensitivity was 92%, and the specificity was 79%. With the use of ...

A wide variety of focal and diffuse infectious processes involve the abdomen. At one extreme are diseases such as pyelonephritis, cystitis, and pelvic inflammatory disease, conditions usually diagnosed without imaging studies and treated without complications. At the other extreme are abdominal abscesses, which may defy clinical diagnosis, are associated ...

Although PET/CT scanners have the potential for precise fused registration of structures visualized on both PET and CT, physiological motion during the acquisition of both studies may alter the appearance of organ shape, size or location. The degree of possible mismatch in abdominal organ size and position between PET and ...

Abdominal ultrasound (US) is often the first-line imaging modality used to assess focal liver lesions. Due to various new gray-scaled US techniques, such as tissue harmonic imaging (THI), spatial compounding technique and speckle reduction technique, as well as contrast-enhanced techniques, abdominal ultrasound ...

Renal lymphangiomatosis is an exceedingly rare disorder characterized by developmental malformation of the lymphatic system surrounding the kidneys. We report a case of bilateral renal lymphangiomatosis in a 21-year-old man who underwent abdominal sonographic examination that revealed numerous cystic areas of various sizes around both kidneys with extension along the renal ...

In recent years, intra-abdominal hypertension has gained greater recognition both clinically and radiologically. Its most clinically significant form occurs when intra-abdominal pressure (IAP) is sustained at high pressures for long periods of time. This is known as abdominal compartment syndrome (ACS), which is a surgical emergency ...

The purpose of this study is to investigate the relationships among cross-sectional diameters, weight and computed tomography (CT) dose descriptors (CTDI and DLP) to identify which is best used as a measure for the establishment of DRLs in CT. Data (gender, weight, cross-sectional diameters, dose descriptors) from 56 adult patients attending for either a ...

The purpose of this study was to compare lesion detection in images reconstructed using standard filtered back projection (FBP) with those reconstructed using a new CT reconstruction algorithm called Iterative Reconstruction in Image Space (IRIS). Detection performance was experimentally measured using a 2- AFC software package that ...

This book is divided into ten chapters. The first, an overview of the importance of staging, is followed by separate chapters on computed tomographic (CT) evaluation of lymph node metastases; metastatic disease to the thorax; staging of laryngeal, hypopharyngeal, esophageal, non-small cell lung, and renal carcinoma; and pediatric abdominal malignancies. ...

The use of F-18 FDG PET/CT in the characterization of doubtful adnexal findings and in the staging of ovarian cancer is being extensively evaluated. The purpose of our article is to review the literature and to add our experience to the published works. We concluded that F-18 FDG PET/CT could represent an important method in addition to other ...