We designed a generic method for segmenting the aneurismal sac of an abdominal aortic aneurysm (AAA) both from multi-slice MR and CT-scan examinations. It is a semi-automatic method requiring little human intervention and based on graph cut theory to segment the lumen interface and the aortic wall of AAAs. Our ...

A lesion was discovered in the tail of the pancreas by ultrasonography performed during a health checkup for a 59-year-old Japanese man. Abdominal contrast-enhanced computed tomography (CE-CT) revealed strong enhancement in a 4-cm tumor in the pancreatic tail and in a 1-cm tumor in the pancreatic body. Serum glucagon levels ...

Objectives: Desmoid tumour is a common extraintestinal manifestation of patients with familial adenomatous polyposis (FAP) who have undergone prophylactic colectomy. We aimed to determine whether MRI provides equivalent or better assessment of desmoids than CT, the current first-line investigation.Methods: Following ethical approval and informed consent, FAP patients with known desmoid ...

Delayed diagnosis of a bowel or mesenteric injury resulting in hollow viscus perforation leads to significant morbidity and mortality from hemorrhage, peritonitis, or abdominal sepsis. The timely diagnosis of bowel and mesenteric injuries requiring operative repair depends almost exclusively on their early detection by the radiologist on computed tomography examination, ...

Objective: To investigate the value of CT 3D reconstruction in the diagnosis and treatment of incisional hernia and the related factor of abdominal cavity volume. Methods: Abdominal wall defect and herniary volume were measured using 3D reconstruction based on plain CT scans in 17 patients with incisional hernias. Results: The ...

Modern chemotherapy may result in an array of complications that can produce computed tomography (CT) findings in the hepatobiliary, gastrointestinal and urinary systems. This article describes the CT findings that may be seen in abdominal complications of contemporary chemotherapy. Knowledge of the varying CT appearances that can be encountered may ...

To assess the ability of unenhanced computed tomography (CT) for diagnosis of acute abdominal venous thrombosis (VT). This retrospective study matched 29 patients with 52 VT with a control group of 29 patients without VT. Two radiologists independently evaluated the unenhanced CT on standard abdominal and narrowed window settings to ...

Imaging of pregnant patients with non-obstetric abdominal pain is reviewed, with an accompanying pictorial essay of cases with concentration on magnetic resonance imaging. Non-obstetric causes of abdominal pain during pregnancy are similar to those of non-pregnant patients. The most common causes are appendicitis and cholecystitis. Other causes are myriad and ...

BACKGROUND: AortaScan AMI 9700 is a portable 3D ultrasound device that automatically measures the maximum diameter of the abdominal aorta without the need for a trained sonographer. It is designed to rapidly diagnose or exclude an AAA and may have particular use in screening programs. Our objective was to determine ...

Diffusion weighted imaging (DWI) in magnetic resonance imaging (MRI) is currently an important tool for detecting and characterising hepatic lesions, as well as for monitoring and evaluating the response to the treatment of the tumour disease. The use of this technique is also being assessed for the study of diffuse ...

PURPOSE: The purpose of this study was to determine the differential characteristics on MRI between tuberculosis and lymphoma in abdominal lymph nodes. MATERIALS AND METHODS: We conducted a retrospective analysis for the counter, size, signal intensity, enhancement patterns, and anatomic distribution of lymph nodes in 57 consecutive patients with documented ...

The goal of this study was to use noninvasive conventional and molecular magnetic resonance imaging (MRI) to detect and characterize abdominal aortic aneurysms (AAAs) in vivo. Collagen is an essential constituent of aneurysms. Noninvasive MRI of collagen may represent an opportunity to help detect and better characterize AAAs and initiate ...

Hepatic masses detected by ultrasonography and computed tomography in a young woman showed increased radioactivity on F-18 fluorodeoxyglucose positron tomography. Those multiple hepatic lesions were investigated under suspicion of malignancy. Liver enzymes, viral markers, and tumor markers were in normal range. Ultrasonography-guided needle biopsy revealed to be focal fatty infiltration ...

We report a case of a 9-year-old girl presenting with hematochezia after 2 normal prior colonoscopies having an ectopic right kidney showing increased uptake on a Tc-99m pertechnetate (8.3 mCi) scan, diagnosed as a Meckel's diverticulum. Laparoscopy performed for resection of Meckel's diverticulum showed an ectopic right kidney subsequently confirmed ...

Gastroenteropancreatic neuroendocrine tumors and their metastases have an inconsistent appearance with only a small percentage of lesions appearing as cystic masses in computed tomography (CT) and magnetic resonance imaging (MRI) and can therefore be mistaken as benign or infectious lesions, leading to a false diagnosis with delayed and inadequate treatment. ...

OBJECTIVES: To assess the extent of extra imaging beyond the prescribed anatomical margins for chest and abdominal CT and to determine associated extra patient and organ dose estimates. METHODS: For 167 consecutive patients undergoing routine chest and/or abdominal examination with 128-slice CT, extra imaging length was evaluated on coronal images. ...

We describe a case of relapsed granulomatosis with polyangiitis (Wegener's) (GPA) that presented with abdominal pain. (18)F-fluoro-2-deoxy-D: -glucose positron emission tomography (FDG-PET)/computed tomography (CT) clearly depicted an inflammation of the left peri-iliac arterial soft tissue, which was thought to be the cause of the ureteral obstruction and hydronephrosis. Our case ...

We developed a new type of mobile teleradiology system using an ultramobile PC (UMPC) for web-based remote viewing over a wireless network. We assessed the diagnostic performance of this system for abdominal CT interpretation. Performance was compared with an emergency department clinical monitor using a DICOM viewer. A total of ...

INTRODUCTION: Cervical dilatation and/or uterine evacuation and curettage (D/E&C) is the most commonly performed and safest gynecological procedure. Although procedure-related uterine perforation is rare, this condition may require surgical intervention. Ultrasound examination and computed tomography are useful for diagnosing such perforations with incarceration of an intra-abdominal organ. However, the use ...

The aim of this study was to assess the distribution of CT dose index (CTDI) values reported by sites undergoing ACR CT accreditation between 2002 and 2004. Weighted CTDI (CTDI(w)) values were measured and reported by sites applying for ACR CT accreditation, and the percentage of scanners with values above ...

Retroperitoneal leiomyomata are rare neoplasms. These masses can be asymptomatic or can cause pelvic discomfort, urinary frequency, abdominal fullness or back pain. A 28-year-old, nulliparous female presented with worsening dysmenorrhea and bulk symptoms from fibroids. MRI revealed an exophytic anterior lower uterine segment fibroid with internal degeneration. During surgery the ...

INTRODUCTION: Screening CT often detects posttraumatic pneumothoraces that were not diagnosed on a preceding supine anteroposterior chest radiograph (occult pneumothoraces (OPTXs)). Because abdominal CT imaging misses OPTXs in the upper thorax, the objective of this study was to evaluate the utility of cervical spine (C-spine) CT screening for diagnosing OPTXs. ...

Pneumatosis intestinalis (PI) occurs when inter-luminal air enters the bowel wall of the gastrointestinal tract via a mucosal defect. The condition is caused by numerous disease states, direct trauma, and various drugs. When PI is secondary to drug therapy, discontinuation of the offending agent results in the resolution of PI. ...

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 ...

Sarcomas originating from abdominal organs are extremely rare, and literature in which investigators focus on their imaging features is scarce. This article aims to review the computed tomography and magnetic resonance imaging features of these rare tumors and to help in clinical diagnosis. Various sarcomas (eg, angiosarcoma, undifferentiated embryonal sarcoma, ...

The celiac plexus is the largest visceral plexus and is located deep in the retroperitoneum, over the anterolateral surface of the aorta and around the origin of the celiac trunk. It serves as a relay center for nociceptive impulses that originate from the upper abdominal viscera, from the stomach to ...

We report the case of a 72-year-old man who presented with weight loss, anorexia and a change in bowel habit. Computed tomography (CT) of the chest, abdomen and pelvis demonstrated widespread thoracic and abdominal lymphadenopathy and a lesion within the splenic flexure. This was confirmed as an adenocarcinoma after a ...

Cloacal exstrophy (CE) is a rare congenital malformation involving the urinary, intestinal, and genital systems. We present a case of CE in which characteristic findings were detected at two serial fetal magnetic resonance imaging (MRI) sessions. At 18 weeks' gestation, the initial fetal MRI revealed a cystic mass protruding from ...

AIM: To evaluate contrast-enhanced ultrasound (CEUS) as an effective alternative to CT-angiography (CTA) for endoleak detection and aneurismal sac diameter measurement in the follow-up after endovascular abdominal aortic aneurysm repair (EVAR). METHODS: From January 2006 to December 2010, 395 patients underwent EVAR follow-up with both CTA and CEUS. The diameter ...

Atherosclerotic abdominal aortic ulcers are uncommon in contrast to those of the thoracic aorta. They present with a variety of symptoms. Computed tomography (CT) scans and magnetic resonance imaging (MRI) are the methods of diagnosis. Treatment is made easier with the use of endovascular techniques, which have less mortality and ...

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 distended sacciform distal intramural ...

To assess the diagnostic value of computed tomography (CT) imaging in screening for abdominal nonhematogenous disseminated tuberculous lymphadenopathy (TL). The CT scans of 12 patients with abdominal nonhematogenous disseminated TL suggestive of neoplasm were retrospectively analyzed in this review. The final diagnoses were confirmed by lymph node pathology for seven ...

Increasing evidence supports a role for contrast-enhanced ultrasound in the assessment of blunt abdominal trauma. Accurate definition of organ injury can be demonstrated, as well as extension to solid organ capsule and even vascular injury. Low-dose contrast is needed for renal imaging, to avoid obscuration of deeper structures from intense ...

Background. A 59-year-old man presented for a follow-up, 6 years after surgery for a large pheochromocytoma. He had suffered from diabetes mellitus, hypertension and abdominal pain in the right flank region. Previous postoperative follow-up did not reveal tumor recurrence.Investigation. Measurement of plasma free metanephrine and normetanephrine by high-performance liquid chromatography ...

Imaging surveillance is necessary to assess for long-term procedural outcomes after endovascular treatment. This is generally performed by computed tomography (CT) or magnetic resonance imaging (MRI). Contrast-enhanced ultrasound (CEUS) has recognized utility for cardiovascular and abdominal applications and is an alternative option in patients with renal impairment or CT/MR contrast-related ...

Computed tomography (CT) was proven to be superior to preoperative abdominal ultrasound in the preoperative setting for detection of hepatic metastases from colorectal cancer (CRC). The higher sensitivity of CT has resulted in a number of unexpected abdominal findings of varying importance; an issue that was previously studied in relation ...

Our aim was to evaluate the different clinical value of (111)In-pentetreotide hybrid SPET/CT versus SPET alone in detecting carcinoid tumours located in the thoracic and abdominal region. Twenty-four patients with carcinoid tumours histologically proven (13 of abdominal origin, 11 of thoracic origin) underwent (111)In-pentetreotide SPET/CT with hybrid system (Millennium VG ...

Enteroclysis was first used to diagnose small bowel obstruction in 1996. However, nasojejunal intubation required during enteroclysis causes discomfort to the patient. Triphasic computed tomography (CT) enterography, a noninvasive procedure that does not require intubation, was found to be an efficient method to diagnose small bowel lesions. We describe our ...

The administration of a contrast agent is considered an essential tool to evaluate abdominal diseases using Ultrasound. The most targeted organ is the liver, especially to characterize focal liver lesions and to assess the response to percutaneous treatment. However, the expanding abdominal indications of contrast-enhanced ultrasound make this technique an ...

AIM: To determine whether dual-phase abdominal computed tomography (CT) detected more metastases than portal-phase CT alone in patients with renal cell carcinoma (RCC). MATERIALS AND METHODS: Audit committee approval was obtained. A retrospective audit was undertaken in 100 patients who underwent both arterial and portal phase CT. The CT images ...

The purpose of this study was to assess the diagnostic value of ultrasonography in the evaluation of abdominal distension in 52 camels (Camelus dromedarius). The conditions included trypanosomiasis (n=35), intestinal obstruction (n=12) and ruptured urinary bladder (n=5). Fifteen clinically normal camels were included as controls. Transabdominal and transrectal ultrasonography was ...

The purpose of the present study was to correlate direct measurements of abdominal wall fat at the site of exam and appendiceal position with ultrasound (US) visualization of the appendix. The study took place at a large, urban pediatric teaching hospital. Demographic and imaging data of all patients who underwent ...

A deceased 23year old female was repatriated from a 3rd world country in a deeply frozen state as no conventional mortuary refrigeration was available. Prior to her death the deceased had complained of abdominal pain, nausea and vomiting followed by collapse. She was unable to be resuscitated. Postmortem CT scanning ...

The diagnostic usefulness of abdominal magnetic resonance (MR) imaging lies in the improved contrast resolution and ability to qualify several tissue characteristics of a specific organ or lesion. Our institution uses organ-specific protocols to facilitate technical reproducibility and optimize scan duration. These protocols are discussed individually in this article when ...

The purpose of this article is to retrospectively review the radiologic and clinical findings in patients with angiotensin-converting enzyme inhibitor (ACEI)-induced small-bowel angioedema, with an emphasis on CT findings. Imaging findings, with an emphasis on CT, and clinical characteristics of 20 patients (23 presentations) presenting to two institutions' emergency departments ...

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 ...

Burkitt's lymphoma is a form of Non-Hodgkin's B-cell lymphoma. We report a case of Burkitt's lymphoma mimicking peritoneal carcinomatosis. We will discuss the imaging and clinical findings that differentiate between peritoneal carcinomatosis and Burkitt's lymphoma. A 26-year-old man presented with nonspecific abdominal pain, vomiting and diarrhea associated with significant amount ...

To evaluate the relationship between hepatic fat infiltration and abdominal fat volume by using computed tomography (CT). 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 ...

BACKGROUND: Retroperitoneal hemorrhage (RPH) is a serious but infrequent complication of percutaneous coronary intervention (PCI). This study aimed to describe the clinical outcomes of patients who developed RPH following PCI in the current practice era, with particular focus on treatment strategies and the assessment of the related prognostic value of ...

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 ...