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 radiograph in term of ...

Computed tomography (CT) of the abdomen was performed on 46 patients who had undergone graft replacement of abdominal aortic aneurysms. Twelve post-operative complications were found in nine patients. They included hemorrhage, infection, anastomotic pseudoaneurysms, major vessel occlusion, postoperative pancreatitis, and others. The ...

The choice of simultaneous or staged surgery in patients with valvular diseases and abdominal aortic aneurysms (AAA) remains controversial. We present a case of simultaneous surgery of double valve replacement and abdominal aorta replacement in a patient with infective endocarditis. A 74-year-old woman was admitted ...

Retroaortic left renal vein occurs infrequently and poses potential hazards to the surgeon during abdominal aortic surgery. We herein report the case of a 77-year-old man with a retroaortic left renal vein who underwent an abdominal aortic aneurysm (AAA) repair. The retroaortic left renal vein was diagnosed preoperatively by contrast-enhanced computed ...

Desmoid tumors are known to be associated with Gardner Syndrome and, when located in the mesentery, can contribute to morbidity and mortality. Computed tomography (CT) was used to evaluated six patients with Gardner Syndrome who, after colectomy, complained either of abdominal pain or of palpable masses. In five patients, desmoids of the mesentery, ...

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: x-ray, sonography, CT, or ...

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 ...

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

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. ...

Nephrotoxicity of CT Contrast Agents; CT Scans in Those With Renal Compromise; Sensitivity to CT Contrast Agents; US With CEUS as Replacement for Unenhanced CT Scan

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

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 ...

Review of abdominal CT scans for evaluation of blunt abdominal trauma yielded 35 cases of pneumothorax, 10 of which had not been diagnosed before CT by clinical examination of plain radiographs. Of the 10 cases initially diagnosed on CT, seven required tube thoracostomy for treatment of the ...

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 ...

An 84-year-old woman visited a local clinic with the complaint of upper abdominal pain and was referred to our hospital because of a suspected mediastinal tumor. Chest and abdominal computed tomography (CT) scanning were performed and Morgagni's hernia that contained omentum was identified on multiplanar reconstruction (MPR) images. ...

Computed tomography (CT) was used to study an abdominal mass in a patient who presented with acute abdominal pain. The CT demonstration of sac-like encapsulation of small bowel loops allowed a diagnosis of internal hernia.

... Tumor Markers and Chest X-ray done every month Abdominal CT scan done every 2 months Year 2: Tumor Markers and Chest X-ray done every 2 months Abdominal CT scan done every 4 months Years ...

Abdominal CT scans were reviewed in a series of 53 patients who had abdominal pain without objective physical, radiographic, or laboratory abnormalities. Forty patients presented with abdominal pain alone, while the remaining patients had abdominal pain associated with nausea, vomiting or mild ...

Abdominal CT scan Amylase and lipase blood test Endoscopic retrograde cholangiopancreatography (ERCP) Magnetic resonance cholangiopancreatography (MRCP)

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

A middle age lady presented with abdominal pain was diagnosed to have multiple peritoneal and hepatic hydatid cysts on CT scan. Retrospectively she was found to have suffered blunt abdominal trauma.

Purpose: Spirometry exhibits baseline drift and frequent measurement errors so it cannot be used by itself to provide tidal volume-based image sorting or breathing motion modeling. Other breathing surrogates, in this study an abdominal bellows system, are drift free but do not measure tidal volume. Simultaneously using spirometry and the bellows system allows the user to ...

ObjectiveWe wanted to describe the computed tomography (CT) findings of gallbladder tuberculosis (TB) and to correlate them with pathologic findings.Materials and MethodsThere were seven patients (M:F = 3:4; mean age, 46.3 years; age range, 32 to 78 years) in whom gallbladder TB was eventually diagnosed. All of them underwent cross-sectional imaging with ...

BackgroundA routine, multiphase, computed tomography (CT) protocol is associated with high radiation exposure to potential kidney donors. To reduce radiation exposure, several authors have suggested a reduction in the number of phases.PurposeTo evaluate a low-radiation-dose, dual-phase protocol (i.e. a protocol with an unenhanced phase and combined vascular and excretory ...

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

The spectrum of schistosomal colonic calcification on abdominal radiographs has been described. The appearance on computed tomography (CT) is equally distinctive and occurs with varying degrees of genitourinary calcification. The authors have experience in three cases with the appearance on CT of intestinal calcification due to ...

PURPOSE: We investigated the correlation relationship between ADCs measured by MRI and SUVs measured by PET/CT of lesions on GIST (gastrointestinal stromal tumor) patients to verify if MR is able to replace or serve as an alternative to PET/CT in GIST staging and treatment monitoring. MATERIALS AND METHODS: Between September 2010 and ...

Although blunt abdominal trauma is frequent, traumatic abdominal wall hernias (TAWH) are rare. We describe a large TAWH with associated intra-abdominal lesions that were caused by high-energy trauma. The diagnosis was missed by clinical examination but was subsequently revealed by a computed tomography (CT) scan. ...

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 this algorithm is to ...

Hypoperfusion complex is an uncommon entity found on computed tomography (CT) of blunt trauma. It is more common in children compared to adults. Everyone should be aware of this entity to interact with clinicians to aid in triage and management of patients in view of poor prognosis. It is also important to prevent unnecessary laparotomies by confusing ...

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 ...

Abdominal cocoon is a rare condition that results in an intestinal obstruction due to total or partial encapsulation of the small bowel by a fibrocollagenous membrane. Treatment is surgical resection of the membrane and free the bowel. Preoperative diagnosis is possible with combination of sonography and CT scan. We report two cases where the diagnosis of ...

Porcelain gallbladder is regarded as a risk factor of gallbladder cancer. A porcelain gallbladder with calcified regional lymph nodes was found using computed tomography (CT) and magnetic resonance imaging (MRI) in a 43-year-old man who presented with nausea, vomiting, and abdominal pain. His cholecystectomy specimen showed diffuse wall thickening and ...

A case of lumbar osteoid osteoma is presented in which computed tomography (CT) demonstrated ipsilateral fatty replacement of the psoas and paraspinal muscles. This association has not been documented on CT previously. The fatty replacement of muscle may be related to atrophy. PMID:6690502

Internal abdominal hernias are a rare entity and may cause unexplained abdominal pain. This report concerns a 46 year old male patient, with a four year history of episodic colicky peristaltic abdominal pains, in whom a left paraduodenal hernia was found at surgical exploration after a negative diagnostic screening by ultrasound, ...

... stent replacement - peripheral arteries ) Renal artery stenosis Abdominal aortic aneurysm ( aortic aneurysm repair - endovascular ) Carotid artery disease ( carotid ...

... Abstract : Segments of abdominal aorta in 25 dogs were replaced by knitted Dacron prostheses in studies concerned with limiting the blood loss ...

... 99 scanning. Lost amniotic fluid was replaced, and the uterine and abdominal incisions closed. The deceleration pattern ...

radiology and barium enemas; for these procedures, the relevant organ doses are in the range for which abdominal CT Stomach 10 Barium enema Colon 15 Neonate abdominal CT Stomach 20 CT coronary angiography Lung, interventional radiology and barium enemas, which account for the majority of the ...

We report here a case of chronic postprandial abdominal pain and weight loss of more than one year duration. He was diagnosed to have abdominal angina (chronic mesenteric ischemia) on CT angiography. Open surgical revascularization procedure-right common iliac mesenteric polytetrafluoroethylene (PTFE) bypass graft achieved positive ...

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

The ideal assessment of the blunt abdominal trauma (BAT) patient would be sensitive, specific, economical, fast, and without complications. By combining ultrasound (US) with computed tomography (CT) and diagnostic peritoneal lavage (DPL), an effective alg...

The ability to diagnose pancreatic carcinoma has been rapidly improving with the recent advances in diagnostic techniques such as contrast-enhanced Doppler ultrasound (US), helical computed tomography (CT), enhanced magnetic resonance imaging (MRI), and endoscopic US (EUS). Each technique has advantages and limitations, making the selection of the proper diagnostic technique, ...

A 60-year-old obese woman was admitted to our hospital to receive surgical treatment for "slow-growing mediastinal lipoma". With the non-invasive examination such as CT scan and ultrasonography, she was revealed as Morgagni's hernia containing a greater omentum. With a trans-abdominal approach, we could take a good surgical field for the bilateral foramina ...

Patients with von Hippel-Lindau disease often develop asymptomatic abdominal manifestations including renal cysts and carcinomas, pheochromocytomas, and pancreatic tumors and cysts. Early detection of renal carcinoma and pheochromocytoma is particularly important. Accordingly, periodic abdominal screening of affected individuals and at-risk family members ...

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 imaging ...

pelvis or ureter Colon cancer Hepatocellular carcinoma Lymphoma Melanoma Ovarian cancer Pancreatic cancer Pheochromocytoma Renal cell carcinoma (kidney cancer) Testicular cancer...

incidentally discovered masses, appreciating that individual care will vary depending on each patient as an inciden- taloma, may be defined as "an incidentally discovered mass or lesion, detected by CT, MRI hepatic masses in both the oncol- ogy and nononcology patient population that in the past remained

We report two cases of non-obstructive mesenteric ischemia (NOMI), a rare but potentially lethal complication after cardiovascular surgery, which was successfully managed. In both cases (a 74-year-old chronic hemodialysis patient who underwent emergency aortic valve replacement and coronary artery bypass graft (CABG), and a 74-year-old patient who underwent emergency ...

Abdominal computed tomography (CT) and other studies were evaluated retrospectively in 46 patients with metastatic adenocarconoma or undifferentiated carcinoma in whom the primary tumor site was not evident from the history, physical examination, or chest radiograph. The primary site was ultimately located in 21 patients (45.7%). CT of ...

In 25 patients we assessed the enhancement of abdominal venous structures during dynamic computed tomography (CT). The degree of venous enhancement demonstrated great variation. In six instances (out of 250 observations) a vessel was visually perceived as not enhancing and potentially thrombosed, including three gonadal veins. CT ...

As fast high-resolution total body computed tomography (CT) scanners have proliferated in hospitals and radiologists' offices across the country, they have tended to eclipse the usefulness of sonography in abdominal and thoracic diagnosis. This paper discusses some of the limitations of CT techniques as applied to common ...

We report a case of acute appendagitis in a patient who presented initially with typical features of acute appendicitis. The diagnosis of acute appendagitis was made on pathognomonic signs on computed tomography (CT) scan. Abdominal pain is a common surgical emergency. CT is not always done if there are clear features of acute ...

We report a case of acute appendagitis in a patient who presented initially with typical features of acute appendicitis. The diagnosis of acute appendagitis was made on pathognomonic signs on computed tomography (CT) scan. Abdominal pain is a common surgical emergency. CT is not always done if there are clear features of acute ...

INTRODUCTION: Testicular germ cell tumors are common in young men. There is a wide consensus regarding the key points in their diagnosis and treatment, although some elements, including the best approach to follow-up, are being reviewed and revised. We present a statistical study that uses tools for the evaluation of diagnostic tests to compare the usefulness of abdominal ...

We present the computed tomography (CT) findings of pseudothrombosis of the right ovarian vein. In two young multiparous women, pseudothrombosis was detected on early-phase spiral CT scans by the presence of retrograde flow of contrast medium down the left ovarian veins. Asymmetry of density seen in the ovarian veins in the early phase of spiral ...

Eleven patients with various extrahepatic right-upper-quadrant lesions had findings on computed tomography (CT) that strongly suggested intrahepatic location. Diagnostic uncertainties on CT were caused by the large size of these masses (5-12 cm in diameter) and sparsity of retroperitoneal fat planes. Sonography depicted the true location of these lesions ...

Computed tomography (CT) correctly portrayed the gross anatomic features of six mesenteric, omental, and ovarian cysts and diagnosed two pancreatic pseudocysts in children. Large, well defined, low-density masses were found, often containing septa and filling most of the abdomen and pelvis. CT displayed the size and extent of the mass and showed extrinsic ...

OBJECTIVE: The purpose of this article is to describe and illustrate the CT findings of acute cholecystitis and its complications. CONCLUSION: CT findings suggesting acute cholecystitis should be interpreted with caution and should probably serve as justification for further investigation with abdominal ultrasound. ...

This clinical policy from the American College of Emergency Physicians is an update of the 2004 clinical policy on the critical issues in the evaluation of adult patients presenting to the emergency department with acute blunt abdominal trauma. A writing subcommittee reviewed the literature as part of the process to develop evidence-based recommendations to address 4 key ...

Background:Calcified chronic subdural hematomas occur infrequently. When the calcifications are extensive and bilateral, the condition is termed �armored brain�. We describe a case of �armored brain� incidentally discovered in an adult presenting with abdominal pain and mild headaches, long after initial placement of a ventriculo-peritoneal (VP) shunt.Case ...

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 ...

Computed tomography (CT) exams were conducted to determine the distribution of abdominal fat identified based on the CT number measured in Hounsfield Units (HU) and to measure the volume of the abdominal visceral and subcutaneous fat in minipigs. The relationship between the CT-based fat ...

Computed tomography (CT) exams were conducted to determine the distribution of abdominal fat identified based on the CT number measured in Hounsfield Units (HU) and to measure the volume of the abdominal visceral and subcutaneous fat in minipigs. The relationship between the CT-based fat ...

We present a patient with superior vena cava (SVC) obstruction in whom two areas of increased hepatic enhancement within the left lobe were seen on abdominal computed tomography (CT). The significance of this case is that abnormal enhancements of the liver on abdominal CT in the regions described should be ...

Abdominal CT is often performed for the staging of lymphoma. Retroperitoneal lymphadenopathy is the most common abnormality identified, but various extranodal sites of lymphomatous involvement have been reported, especially in non-Hodgkin lymphoma. Renal involvement is not rare, but peripelvic or periureteral involvement in the absence of renal parenchymal ...

CT examinations of four proven abdominal abscesses with enteric communications are reported. All the patients received oral contrast (3% Gastrografin solution). Three patients recieved rectal contrast. The patient who did not receive rectal contrast had a prior abdominoperineal resection. Contrast material was administered intravenously unless there was a ...

The computed tomographic (CT) and sonographic appearances of the late stages of pancreatic damage in three patients with cystic fibrosis are illustrated. All three had severe exocrine pancreatic insufficiency with steatorrhea. In two patients CT revealed complete fatty replacement of the entire pancreas. In the third, increased ...

Computed tomography of the abdomen and pelvis is frequently performed for the staging of abdominal and pelvic lymphoma. Certain limited CT protocols have been nearly as accurate as more complete examinations at defining the extent of lymphadenopathy and the response to therapy, with the advantages of decreased scanning time and patient radiation dose. The ...

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 clinicians, favorable reimbursement, and lack of guidelines to ...

, particularly with WC, an indicator of abdominal fat accumulation. These findings are consistent with previous between adiponectin and CT-assessed intra-abdominal fat, whether they found no relationship concentration or activity, the decrease of which may only be related to a high amount of intra-abdominal fat

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 ...

Twenty-four patients with inflammatory lesions of the abdominal wall were examined by ultrasonography. Nine of these patients underwent computed tomographic (CT) scanning as well. Both ultrasonography and CT clearly delineated the exact location and extent of abdominal wall abscesses. Abscesses were easily ...

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 ...

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 complementary and supplementary ...

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 imaging ...

OBJECTIVE: In this review, we attempt to address many of the issues that are related to ensuring patient benefit in body CT, balancing the use of ionizing radiation and iodinated contrast media. We attempt to not only summarize the literature but also make recommendations relevant to CT protocols, including the technical parameters of both the scanner and ...

While the transaxial view of the abdomen and pelvis using computed tomography (CT) has become the standard technique for abdominal examination, evaluation of the abdominal and pelvic anatomy in the coronal plane can provide additional information about the relation of organs to one another and the planes between normal tissue and ...

Computed tomographic (CT) scans were obtained in 20 patients with primary and/or metastatic abdominal carcinoid tumors. The primary tumors were seen rarely on CT. Mesenteric involvement was seen in eight of the 20 patients, usually as a soft-tissue mass surrounded by fat and radiating soft-tissue strands. Enlarged retroperitoneal lymph ...

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 ...

Abdominal trauma has the priority in diagnosis and therapy after assuring cardiorespiratory function. Abdominal injuries are seen in 2%-5% of all accidents, often as polytrauma. In the FRG there are mainly blunt traumas (90%). Abdominal trauma is the leading injury in 51.6% of fatal traffic accidents. The frequency of the organ traumas ...

Abdominal wall endometriosis is a rare condition, which usually develops in a surgical scar of abdominal hysterectomy or Caesarean section. A 38-year-old lady presented in the surgical out patient department complaining of painful swelling in the lower abdomen, at the left edge of the scar of caesarean section. Computerized tomographic ...

A review was made of 365 abdominal computed tomographic (CT) examinations in 125 patients with a histologic diagnosis of lymphoma who had undergone CT before and after therapy. Clinical correlation immediately preceding the follow-up CT examination was obtained in 100 patients. In these 100 patients, five distinct ...

Abdominal computed tomography (CT) was performed in 31 patients with Kaposi sarcoma (KS) related to acquired immunodeficiency syndrome (AIDS), three patients with classic KS, and 12 patients with the newly described lymphadenopathy syndrome (LNS). The frequency, distribution, and appearance of lymphadenopathy and splenomegaly were similar in the ...

The purpose of this research was to investigate the effects of apriori estrogen replacement therapy (ERT) and endurance exercise training in postmenopausal women on abdominal visceral fat (AFV) and other selected variables related to body composition and the metabolic syndrome (MS). Forty-eight healthy and previously sedentary postmenopausal women (mean ...

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 ...

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. She refused surgical ...

We report success with CT guided percutaneous catheter drainage of deep neck abscesses. The cost efficacy and decreased morbidity of percutaneous catheter drainage has been proved in abdominal and retroperitoneal abscess management, and CT for diagnosis of deep neck infections is well established. The logical application of a proven ...

A case study of a patient who presented with abdominal pain and a palpable mesogastric mass is discussed. Ultrasound and computed tomography (CT) demonstrated that the palpable mass was jejunojejunal intussusception of the small intestine. The lead point of the intussusception was a lipoma that appeared in the CT scan as a small ...

A 93-year-old patient with a cardiac pacemaker and biochemical renal failure presented with back pain suspicious for dissection. We performed gadolinium-enhanced thoracoabdominal multidetector CT angiography using eight-channel multidetector CT. Uniform aortic enhancement of 140 HU was sufficient to exclude aortic dissection and defined an unruptured ...

CT examination of the abdomens of two children demonstrated sites of high attenuation in the stomach, which were revealed to be bubble gum. Investigation of the CT appearance of samples of chewing gum showed that it consistently has high attenuation (178-345 HU). The attenuation of gum base, which contains calcium carbonate, was 476 HU. In addition, ...

This study evaluated the safety, feasibility, and clinical utility of transhepatic drainage of inaccessible abdominal abscesses retrospectively under real-time computed tomographic (CT) guidance. For abdominal abscesses, 12 consecutive patients received percutaneous transhepatic drainage. Abscesses were considered inaccessible using ...

Trauma to the colon is uncommon and accounts for only 3-5% of all blunt abdominal injuries. Among them, intramural hematoma of the colon is a rare complication and the acute form is rarer than the chronic form. We report a 37-year-old man who presented with abdominal pain followed by intestinal obstruction due to a blunt trauma. The initial diagnosis was ...

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 ...

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 uptake in the ovary ...

An important consideration in four-dimensional CT scanning is the selection of a breathing metric for sorting the CT data and modeling internal motion. This study compared two noninvasive breathing metrics, spirometry and abdominal height, against internal air content, used as a surrogate for internal motion. Both metrics were shown to ...

Because of the advantages in the use of high photon flux and thus the short scan times of CT imaging, the traditional 68Ge scans for positron emission tomography (PET) image attenuation correction have been replaced by CT scans in the modern PET/CT technology. The combination of fast CT scan ...

The adrenocortical insufficiency may mimic an acute surgical abdomen. We report the case of 20-year-old patient, who presented abdominal pain syndrome, associated with isolated moderate hyponatremia (135 mmol/l). The first diagnostic given is an appendicular syndrome, and she underwent surgery. Given the persistence of abdominal pain syndrome and ...

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 ...

Sixty patients underwent CT scanning of the liver prior to, immediately after, and four hours after intravenous administration of 60% meglumine diatrizoate. Twenty patients received a 50 ml bolus of contrast material, 20 received 100 ml, and 20 received 200 ml. In each group, delayed CT scanning safely raised the inherent density of the liver ...

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 series of volume ...

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 ...

We report an unusual case of a postmenopausal woman that was diagnosed with multiple tumours derived from different embryogenic tissues. She presented with postmenopausal vaginal bleeding. Clinical examination revealed a large pelvic mass, tender on palpation. Serum CA-125 level was elevated at 8,985 kU/l (normal range 0-35). A CT scan showed a malignant-appearing right ...

The prognosis of untreated advanced hepatocellular carcinoma (HCC) is grim with a median survival of less than 6 months. Spontaneous regression of HCC has been defined as the disappearance of the hepatic lesions in the absence of any specific therapy. The spontaneous regression of a very large HCC is very rare and limited data is available in the English literature. We describe spontaneous ...

Primary glomus tumors are extremely rare in the liver. To this date, only two cases of primary glomus tumors of the liver have been reported in the literature. This report is the third case of this specified tumor. The patient was a 50 year-old Iranian woman who presented with a history of epigastric pain and nausea. Abdominal computed tomography (CT) scan ...

Chronic mesenteric ischemia (CMI) is most likely caused by atherosclerosis and less frequently by external compression, fibromuscular dysplasia and vasculitis. Symptomatic CMI is an uncommon, potentially under-diagnosed condition caused by fixed stenoses or occlusion of in most conditions at least two visceral arteries. If only one of the three major bowel providing arteries - the celiac trunk, ...

Computed tomography (CT) guided percutaneous punctures of the liver for cancer diagnosis and therapy (e.g. tumor biopsy, radiofrequency ablation) are well-established procedures in clinical routine. One of the main challenges related to these interventions is the accurate placement of the needle within the lesion. Several navigation concepts have been introduced to compensate ...

Polycythemia vera (PV) is a common cause of Budd-Chiari syndrome (BCS) and portal vein thrombosis (PVT). The postpartum period is a precipitating cofactor. An additional heparin-induced thrombocytopenia/thrombosis (HIT/T) leads to a life-threatening condition in which transjugular intrahepatic portosystemic shunting (TIPS) seems to be the only life-saving procedure. We describe the case of a ...

Clinical manifestations of lactase (LCT) deficiency include intestinal and extra-intestinal symptoms. Lactose hydrogen breath test (H2-BT) is considered the gold standard to evaluate LCT deficiency (LD). Recently, the single-nucleotide polymorphism C/T(-13910) has been associated with LD. The objectives of the present study were to evaluate the agreement between genetic ...

Endovascular aortic replacement (EVAR) is an established technique, which uses stentgrafts to treat aortic aneurysms in patients at risk of aneurysm rupture. The long-term durability of a stentgraft is affected by the stresses and hemodynamic forces applied to it, and may be reflected by the movements of the stentgraft itself during the cardiac cycle. A conventional ...

To evaluate the role of chest CT in the initial staging of testicular seminomatous germ cell tumours. All patients referred to Addenbrooke's Hospital with testicular seminoma from 1 January 2000 to 31 December 2005 were included and case notes retrospectively reviewed. One hundred and eighty-two patients with testicular seminoma were identified, with a median age of 37 years ...

We report a patient who was found to have a smooth-muscle tumor of unknown malignant potential on F-18 FDG PET/CT. A 49-year-old woman was admitted because of abdominal distension of 6-month duration. CT showed a 10 � 17 � 19 cm mass at the posterior side of the uterus displacing the uterus to the right anterior side, which was ...

The authors conducted a retrospective analysis of the CT findings in 29 consecutive patients being studied to detect complications of aortofemoral bypass surgery. Presenting symptoms included fever in 22 (76%), gastrointestinal bleeding in 2 (7%), a pulsating mass in 3 (10%), jaundice in 1 (3%), and back pain in 1 (3%). The complications observed most frequently were groin ...

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. Conventional imaging ...

Acute epiploic appendagitis (EA) is a rare and often misdiagnosed cause of acute abdominal pain. Though a benign and often self-limiting condition, EA's ability to mimic other disease processes makes it an important consideration in patients presenting with acute abdominal symptoms. Careful evaluation of abdominal ...

OBJECTIVE: Perigraft seroma (PGS) causing enlargement of the native aneurysm sac after open abdominal aortoiliac aneurysm (AAA) repair is a rarely recognized complication with unknown clinical consequences. This study was undertaken to determine the frequency of PGS, identify associated risk factors, and review resulting complications and their management strategies. METHODS: ...

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 used as first line ...

Abdominal wall haematomas are uncommon and often misdiagnosed entities. Most of the time the haematoma is produced by rupture of the epigastric vessels, deep circumflex iliac artery or tear in the rectus or lateral oblique muscle. Predisposing factors such as arteriosclerosis of vessels, old age, straining while urinating and coughing and use of anticoagulant agents make ...

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; especially a ...

A prototype flow rate injector for intravenous administration of contrast agent was used successfully and without complications in 200 patients undergoing CT of pelvic, abdominal, and mediastinal structures. Improved contrast enhancement was routinely obtained.

... 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 ...

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...

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.

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 abdominal ...

this technique of imaging the colon with CT can replace or supplement colonoscopy and other methods of imaging. The instructions will give a list of foods from which to choose for two-days prior to the CT. The food contained which will temporarily relax the colon. This medication, glucagon, is commonly used prior to an enema

Recent reports indicate that computed tomography (CT) after bolus injection of contrast material is diagnostically specific for hemangioma, replacing the need for angiography in a high percentage of patients. The authors report a unique hepatic hemangioma that showed early diffuse intense opacification by angiography and contrast-enhanced ...

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 tissue activity and anatomical detail. Since ...

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 therefore suspected. Her ...

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 ...

We report the case of a patient who was transferred to our facility after a CT scan obtained at a local hospital revealed a leaking abdominal aortic aneurysm. Review of the scan showed an aorto-left renal vein fistula. Knowing this fistula was present made the operative repair of the aneurysm and control of the fistula much more straightforward than might ...

Sixteen patients were examined with both abdominal CT and {sup 67}Ga scintigraphy for suspected synthetic vascular graft infection. Two patients were studied twice, yielding a total of 18 paired tests. A total of 25 grafts were analyzed. The results of CT and {sup 67}Ga scintigraphy were compared for grafts in specific anatomic ...

We report 2 cases of ruptured pancreaticoduodenal artery aneurysm (PDAA) treated by transcatheter embolization (TAE). In the first case, a 63-year-old man complained of sudden abdominal pain and was transferred to our hospital because he collapsed in a state of shock. Abdominal computed tomography (CT) revealed retroperitoneal hematoma ...

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 ...

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 abdominal surgery. A prototype ...

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 ...

Two cases of rare abdominal hernias were presented: sciatic and obturator. Both presented cases confirm diagnostic difficulties, often leading to delay in therapy. The best way to reduce mortality in these patients seems to be the increase of number of preoperative diagnoses. In obturator hernia's diagnosis the attention is payed to Romberg's symptom, although in sciatic--to ...

This is a case of 49 year-old-female with left lower quadrant pain. Initial diagnosis of acute diverticulitis entertained and treated accordingly. Diagnosis of epiploic appendagitis was done by abdominal CT-Scan. Epiploic appendagitis is commonly misdiagnosed as diverticulitis and appendicitis. Non-invasive studies may lead to early diagnosis avoiding ...

, 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 examination. Radiology 1999; 212

Abdominal scanning with Tc-99m labeled red blood cells serendipitously demonstrated collateral flow in a patent umbilical vein in a patient with unsuspected advanced cirrhotic liver disease and portal hypertension. Knowledge of this was crucial in planning the optimal surgical approach in this patient, referred for resection of a bladder carcinoma. Furthermore, the nuclide ...

Abdominal scanning with Tc-99m labeled red blood cells serendipitously demonstrated collateral flow in a patent umbilical vein in a patient with unsuspected advanced cirrhotic liver disease and portal hypertension. Knowledge of this was crucial in planning the optimal surgical approach in this patient, referred for resection of a bladder carcinoma. Furthermore, the nuclide ...

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 ...

Infected aneurysms associated with Listeria monocytogenes are rare. We describe a case of an infrarenal abdominal aortic aneurysm infected by Listeria monocytogenes. The aneurysm was diagnosed using a contrast-enhanced computed tomography (CT) scan and the infective organism identified within positive blood cultures. The patient underwent a successful ...

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 surgery, could only be ...

This report describes an incidental finding of a pseudoaneurysm of the abdominal aorta on a computed tomography (CT) renal angiogram during investigation of chronic renal failure in a 73-year-old man. The patient had undergone a translumbar aortogram 20 years previously. An increase in the size of the aneurysm by 7 mm over 6 months prompted treatment and ...

This report describes an incidental finding of a pseudoaneurysm of the abdominal aorta on a computed tomography (CT) renal angiogram during investigation of chronic renal failure in a 73-year-old man. The patient had undergone a translumbar aortogram 20 years previously. An increase in the size of the aneurysm by 7 mm over 6 months prompted treatment and ...

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, to the glutei. Normal ...

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...

BACKGROUND: Many of the patients with thoraco-abdominal stab wound remain asymptomatic; in this regard, previous studies reported that 7-48% of asymptomatic patients had diaphragm injury (DI). Thoracoscopy or multidetector computed tomography (MDCT) scan is the best method to detect DI. We aimed to evaluate the role of CT scan with intrapleural contrast to ...

A65 -year-old female was admitted to our hospital with abdominal distension. Abdominal CT and MRI revealed massive ascites and an omental cake, but the ovaries were of normal size. After an omentum biopsy was performed during open abdominal surgery, she was diagnosed as peritoneal serous papillary adenocarcinoma. ...

A falciform ligament abscess is a rare type of intra-abdominal abscess. A 2-yr-old male, who had omphalitis two months previously, presented with a fever and right upper quadrant abdominal pain. The ultrasound and CT scan showed an abdominal wall abscess located anterior to the liver, which was refractory to ...

A falciform ligament abscess is a rare type of intra-abdominal abscess. A 2-yr-old male, who had omphalitis two months previously, presented with a fever and right upper quadrant abdominal pain. The ultrasound and CT scan showed an abdominal wall abscess located anterior to the liver, which was refractory to ...

We report a case of a 50-year-old man who presented with abdominal pain and shock due to an allergic angioedema of the bowel resulting from the use of a common class of anti-hypertensive medication. After initial stabilization, a computed tomography (CT) scan was performed that documented characteristic findings and saved the patient from an unnecessary ...

The purpose of this study was to survey technique and radiation absorbed dose in CT examinations of adult in Sudan and to compare the results with the reference dose levels. Questionnaire forms were completed in nine hospitals and a sample of 445 CT examinations in patients. Information on patient, procedure, scanner, and technique for common ...

BackgroundComputed tomography (CT) is the largest source of medical radiation exposure to the general population, and is considered a potential source of increased cancer risk. The aim of this study was to assess the current situation of CT use in Japan, and to investigate variations in radiation exposure in CT studies among ...

Oct 7, 1993 ... Since it is # not obvious how to compute this inverse function analytically, we instead # replace t in c(t) equation above by z_x(t) to get: ...

AIM: To evaluate the relationship between hepatic fat infiltration and abdominal fat volume by using computed tomography (CT).METHODS: Three hundred and six patients who visited our obesity clinic between November 2007 and April 2008 underwent fat protocol CT scans. The age range of the patients was 19 to 79 years and the mean age was ...

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. CT ...

Primary appendagitis epiploica is a rare benign self-limiting inflammatory condition of the colonic epiploic appendices. It causes acute localized abdominal pain thought to be the result of torsion or spontaneous vascular thrombosis of epiploic appendices. This is a non-surgical situation that clinically mimics other conditions requiring surgery such as acute diverticulitis or ...

Small bowel obstruction (SBO) diagnosed with abdominal computed tomography (CT) has been extensively studied in radiology literature. We present a case report of SBO due to a rare right-sided paraduodenal hernia diagnosed preoperatively on a non-contrast CT and confirmed surgically. PMID:19551425

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 4D-CT ...

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 ...

Optimal opacification of the small bowel is important in the interpretation of abdominal CT. Two contrast agents, a barium suspension and an iodinated, water-soluble material, were evaluated in a blind prospective study of 54 patients. A grading system of small bowel opacification was developed. There was no significant difference between the two agents in ...

Optimal opacification of the small bowel is important in the interpretation of abdominal CT. Two contrast agents, a barium suspension and an iodinated, water-soluble material, were evaluated in a blind prospective study of 54 patients. A grading system of small bowel opacification was developed. There was no significant difference between the two agents in ...

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

We report three cases of portal venous gas detected on sonography without any portal abnormality on CT. In such a situation portal gas could correspond to a tiny amount of intraluminal gas after blunt abdominal trauma or, in contrast, to large or very large quantities of high blood-solubility gases in case of septicemia. Outcome was favorable in all three ...

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 ...

Background:Endometriosis is a common condition in women that affects up to 45% of patients in the reproductive age group by causing pelvic pain. It is characterized by the presence of endometrial tissue outside the uterine cavity and is rarely found subcutaneously or in abdominal incisions, causing it to be overlooked in patients with abdominal ...

Proteus syndrome is an extremely rare congenital disorder that produces multifocal overgrowth of tissue. This report presents a surgical case of a large lipoma in the abdominal wall of a patient with Proteus syndrome. She was diagnosed with Proteus syndrome based on certain diagnostic criteria. The neoplasm increased in size gradually, producing hemihypertrophy of her left ...

Proteus syndrome is an extremely rare congenital disorder that produces multifocal overgrowth of tissue. This report presents a surgical case of a large lipoma in the abdominal wall of a patient with Proteus syndrome. She was diagnosed with Proteus syndrome based on certain diagnostic criteria. The neoplasm increased in size gradually, producing hemihypertrophy of her left ...

A 4 4-year-old female was referred to our hospital with a complaint of abdominal fullness. Computed tomography(CT) showed multiple liver masses and a huge ovarian tumor. Colonoscopy revealed a type 4advanced cancer in the sigmoid colon. She was diagnosed with unresectable liver and ovarian metastases from advanced sigmoid colon cancer, for which we were ...

We describe the case of an 85 year old lady with symptomatic aortic stenosis (AS) with a history of previous coronary artery bypass grafting (CABG), who was referred for consideration of aortic valve replacement (AVR). Echocardiography revealed severe AS with peak gradient of 92 mmHg, orifice area of 0.6 cm2 and preserved left ventricular function. Computed tomography ...

Aim:? The aim of this study was to investigate whether patients with diverticulitis can be prioritised with higher urgency for a subsequent full colonic examination based upon the emergency abdominal computerised tomography (CT) at the time of presentation. Method:? All patients with a diagnosis of diverticulitis hospitalized during 2006 having ...

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 ...

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 ...

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 images. Therefore, our purpose is to offer ...

Tracheobronchial amyloidosis is a rare manifestation of the disease and has never been described with FDG PET/CT. In this study, we report a case of a 70-year-old man with increasing dyspnea, a right pleural effusion, a tracheobronchial circumferential wall thickening, and a mediastinal fat infiltration on CT scan. FDG PET/CT revealed ...

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 based on the ...

In a review of over 300 CT scans of abdominal trauma, we encountered 13 patients with surgically proved pancreatic injuries. CT correctly diagnosed pancreatic fractures, contusions, or posttraumatic pseudocysts in 11 of these patients. There were two false positive and two false negative diagnoses. The CT diagnosis ...

Surface and internal radiation doses for abdominal computed tomography (CT) of children were determined using child-sized phantoms and seven models of CT body scanners. Resolving power of each scanner was determined simultaneously with the radiation dose determination. The average surface skin dose for a complete ...

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 two studies were ...

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, whereas a large ...

The CT scans, plain films, and clinical courses of nine patients with malignant pleural mesothelioma were reviewed to assess the value of computed tomography (CT) in the initial evalation and follow-up of this malignancy. The initial pretreatment scans showed a typical lobulated rind of pleural tumor encasing the lung associated with variable amounts of ...

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 CT ...

Foreign body ingestion is not an uncommon problem encountered in clinical practice. The accidental ingestion of fish bones may sometimes lead to penetration injuries with complicating abscess formation. The ingestion of foreign bodies results in gastrointestinal perforation in about 1% of patients. Fish bones are the most commonly seen objects leading to bowel perforation. Fish bones are usually ...

The annual number of CT scans in the U.S. is now over 70 million. The concern is that organ doses from CT are typically far larger than those from conventional X-ray examinations, and there is epidemiological evidence of a small but significant increased cancer risk at typical CT doses. Because CT is a superb ...

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 ...

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. ...

Five cases of recurrent pyogenic cholangitis (RPC) were studied by ultrasonography, computed tomography (CT), and cholangiography. All patients were recent immigrants from the Orient or Indonesia and had had recurrent attacks of cholangitis for many years. The bile was infected by E. coli and the biliary ducts were dilated; in addition, extrahepatic bile-pigment calculi we ...

To overcome the problem of inadequate mixing of gastrointestinal (GI) tract contents with conventional high-density oral contrast agents in abdominal computed tomography (CT), a flavored 12.5% corn oil emulsion (COE) was tested as an oral contrast agent in 62 patients. The results were compared with those obtained from 105 patients who received ...

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 ...

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 abdominal interventional procedures. CBCT ...

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 lumen and thrombus was ...

Findings on computed tomography (CT) were considered diagnostic or highly suggestive in seven cases of bowel infarction. Important findings were portal or mesenteric venous gas, intramural gas, focal thickening of bowel wall, focal or diffusely dilated fluid-filled bowel, and clot in the superior mesenteric artery. Only one patient had unequivocal extraluminal gas on initial ...

Disseminated infection from Mycobacterium avium-intracellulare (MAI) has recently been recognized as a common and serious complication of the acquired immuno-deficiency syndrome (AIDS). The authors report the computed tomographic (CT) findings of 17 patients with AIDS and disseminated MAI referred for abdominal CT examination. Multiple ...

Two hundred abdominal CT and angiographic examinations were performed on 137 patients with portal hypertension. These patients were being evaluated before or after a distal splenorenal shunt. CT increased the detection of umbilical and retroperitoneal varices. Angiography better detected peripancreatic varices and cavernous ...

Adequate radiologic demonstration of the extent of renal injury following blunt abdominal trauma is an important guide to therapy. Traditionally, the evaluation has been based on urographic and/or angiographic studies. This report details the results of computed tomographic (CT) evaluation of suspected renal injuries in ten patients. Renal injuries were ...