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Singla Suhas S From the Department of Nuclear Medicine, All India Institute of Medical Sciences, New Delhi, - - 2014
Actinomycosis is a rare chronic granulomatous disease that runs an indolent course, predominantly seen in Asian countries. The present case highlights the findings of F-FDG PET/CT in cervicothoracic actinomycosis imitating lymphoma.
Kohl Chad A CA Department of Radiology, Mayo Clinic, 5777 E Mayo Boulevard, Phoenix, AZ, 85054, - - 2014
To re-assess the accuracy of chemical shift imaging in diagnosing indeterminate bone marrow lesions as benign or malignant. We retrospectively reviewed our experience with MR imaging of the pelvis to assess the accuracy of chemical shift imaging in distinguishing benign from malignant bone lesions. Two musculoskeletal radiologists retrospectively reviewed all ...
Nader Reine R AP-HP, Service de Radiologie, Hôpital Antoine Béclère, 157 rue de la Porte de Trivaux, 92141 Clamart, - - 2014
Intraperitoneal rupture of cystic ovarian teratoma is a rare complication. We report a case in a 29-year-old female, with increased abdominal circumference 2 months after vaginal delivery. MRI/CT raised this diagnosis associated to chemical peritonitis. A malignant ovarian mass with peritoneal carcinomatosis was excluded. Laparoscopic oophorectomy was performed and histologic ...
Patil Abhijit Y AY Department of Radiology, Bryn Mawr Hospital, Bryn Mawr, PA - - 2013
Appendiceal diverticulitis is a rare pathologic entity that is difficult to diagnose on clinical grounds because of an indolent course and atypical presenting symptoms. However, the characteristic computed tomographic (CT) features should suggest the correct diagnosis, and an appendectomy should be performed. Despite its rarity, radiologists should be aware of ...
Kühn Jens-Peter - - 2013
To investigate flip angle (FA)-dependent T1 bias in chemical shift-encoded fat-fraction (FF) and to evaluate a strategy for correcting this bias to achieve accurate MRI-based estimates of liver fat with optimized signal-to-noise ratio (SNR). Thirty-three obese patients, 14 men/19 women, aged 57.3 ± 13.9 years underwent 3 Tesla (T) liver MRI including ...
Rubí Sebastià S Nuclear Medicine Department, Hospital Clinic, Barcelona, - - 2013
Tuberous sclerosis complex (TSC) is often associated with cerebral tubers and medically intractable epilepsy. We reevaluated whether increased uptake of α-[(11) C]methyl-l-tryptophan (AMT) in cerebral tubers is associated with tuber epileptogenicity. We included 12 patients (six male, 4-53 years old) with TSC and refractory seizures who were evaluated for epilepsy surgery ...
Sakai Y - - 2013
Alteration in central serotonin biology has been implicated in migraine, and serotonin (5-HT) agonists have been available for more than a decade in the treatment of that condition. To test this hypothesis, we studied in vivo using positron-emission tomography (PET) and α-[(11)C] methyl-L-tryptophan (α-[(11)C]MTrp) as a surrogate marker of cerebral 5-HT ...
Adams Hugo J A - - 2013
OBJECTIVE: To assess and compare the value of whole-body MRI with FDG-PET for detecting bone marrow involvement in lymphoma. METHODS: A total of 116 patients with newly diagnosed lymphoma prospectively underwent whole-body MRI and blind bone marrow biopsy (BMB) of the posterior iliac crest. Of 116 patients, 80 also underwent ...
Kanematsu Masayuki - - 2013
The purpose of this pictorial review is to discuss the usefulness and limitations of diffusion-weighted (DW) MR imaging of the liver, demonstrating DW images of a variety of focal hepatic diseases. We include hepatocellular carcinoma, borderline-lesions in cirrhosis, metastasis, cavernous hemangioma, cyst, focal nodular hyperplasia, hepatic adenoma, abscess, and hematoma. ...
Eriksson Olof - - 2013
INTRODUCTION: 5-Hydroxy-[β-(11)C]-L-tryptophan ([(11)C]HTP) is an established positron emission tomography (PET) imaging agent for neuroendocrine tumors (NETs). It has also been used for other clinical research purposes in neurology and diabetes. However, its widespread use is limited by the short physical half-life of the radionuclide and a difficult radiosynthesis. Therefore, a ...
Yang Wei W School of Biomedical Engineering, Southern Medical University, Guangzhou, - - 2012
This paper is aimed at developing and evaluating a content-based retrieval method for contrast-enhanced liver computed tomographic (CT) images using bag-of-visual-words (BoW) representations of single and multiple phases. The BoW histograms are extracted using the raw intensity as local patch descriptor for each enhance phase by densely sampling the image ...
Ashraf Tazeen - - 2012
The case report describes a 9-year-old boy who presented with an acute cerebrovascular accident and was found to have cardiac tamponade caused by cardiac rhabdomyosarcoma. Symptoms of rhabdomyosarcoma can be indolent and nonspecific, even with metastatic disease. Echocardiography and cardiac magnetic resonance imaging are explored as adjuncts to diagnosis. The ...
Cheng Clarissa S M - - 2012
Sphenoidal sinus mucoceles are indolent lesions that, when sufficiently large, can compress on the optic canal or superior orbital fissure, rapidly causing loss of vision, optic neuropathy, ptosis, pain, ophthalmoplegia, and diplopia. We herein report a 72-year-old gentleman who presented acutely with Cranial Nerve II, III, and IV palsies secondary ...
Lyall Ashima - - 2012
ABSTRACT: A 70-year-old man underwent partial gastrectomy with pathology demonstrating gastric follicular lymphoma. After surgery, a staging FDG PET/CT study demonstrated an FDG-avid low-attenuation band in the liver. Corresponding MRI demonstrated a high T2 signal abnormality. This was believed to represent liver parenchymal injury due to liver retraction during surgery. ...
Naswa Niraj - - 2012
ABSTRACT: PET/CT imaging using Ga-labeled somatostatin analogs has become a popular noninvasive diagnostic modality in the workup of patients with neuroendocrine tumors. A 65-year-old man with pancreatic neuroendocrine tumor with confirmed liver metastases on conventional imaging underwent restaging Ga-DOTANOC PET/CT to monitor response to cold octreotide therapy. Previous PET/CT had ...
Zalom Martina - - 2012
ABSTRACT: The purpose of this study was to determine FDG PET/CT utility in predicting patient outcome undergoing Y RE for metastatic liver tumors.Thirty-one patients with metastatic tumors to the liver underwent Y RE between March 15, 2007, and May 5, 2011, at our institution. FDG PET/CT imaging was performed on ...
Sunnapwar Abhijit - - 2012
With the increasing use of multidetector computed tomography and dynamic magnetic resonance imaging in evaluation of liver pathologies, a variety of vascular shunts are detected in the liver. These shunts can be related to tumors or they can be nonneoplastic. Identification of these shunts can help in diagnosing an underlying ...
Perumpail Ryan B - - 2012
Magnetic resonance elastography (MRE) can noninvasively measure the stiffness of liver tissue and display this information in anatomic maps. Magnetic resonance imaging (MRI) guidance has not previously been used to biopsy segments of heterogeneous stiffness identified on MRE. Dedicated study of MRE in post-liver transplant patients is also limited. In ...
Pandeya G D - - 2012
The purpose of this study was to assess the thermal sensitivity of CT during heating of ex-vivo animal liver. Pig liver was indirectly heated from 20 to 90 °C by passage of hot air through a plastic tube. The temperature in the heated liver was measured using calibrated thermocouples. In ...
Watanabe Haruo - - 2012
PURPOSE: To evaluate whether incorporation of a 3D turbo spin-echo sequence during T2-weighted MR imaging improves the detection of focal hepatic lesions by 3T MR imaging. MATERIALS AND METHODS: Seventy-nine consecutive patients including 67 patients with 62 malignant and 71 benign lesions and 12 patients having no hepatic lesion underwent ...
Yang Hong - - 2012
A d-f heteronuclear complex (Ir-Gd) by coupling an iridium(III) complex to a macrocycle-based gadolinium complex has been developed as as a dual-mode bioimaging probe for luminescence imaging and magnetic resonance imaging (MRI). The cyclometalated iridium complex showed an intense visible metal-to-ligand charge transfer (MLCT) absorption and strong yellow phosphorescent luminescence. ...
Cho Pyong-Kon - - 2012
The primary goal of this study was to ascertain the reduction in radiation dose when conducting low-kilovoltage liver computed tomography (CT) examinations using multidetector row CT (MDCT). Fifty patients under follow-up who were diagnosed with liver cancer were examined using a 16-slice MDCT scanner and volume CT dose index (CTDI(vol)) ...
Wolfson Robert M - - 2012
ABSTRACT: A 55-year-old woman with abdominal pain, trace hematochezia, and anemia underwent Tc-labeled RBC scintigraphy to assess for gastrointestinal bleeding. The patient had a remote history of malignant melanoma and had been in a motor vehicle collision 3 weeks prior. The scintigraphic findings were compatible with a giant cavernous hemangioma ...
Hohmann Joachim - - 2012
PURPOSE: To find out if the hepatic transit time (HTT) shortening, which was already proven in patients with liver metastases by other modalities, can also be detected with MRI. MATERIALS AND METHODS: The Patient group consisted of 20 subjects with liver metastases from colorectal cancer and the control group of ...
Donati Francescamaria - - 2012
PURPOSE: To present diffusion and perfusion magnetic resonance imaging (MRI) characteristics of focal nodular hyperplasia (FNH) of the liver. MATERIALS AND METHODS: Thirty-five patients with 52 FNHs (21 were pathologically-confirmed) underwent MRI at 1.5-T device. MR diffusion [diffusion-weighted imaging (DWI)] was performed using a free-breathing single-shot, spin-echo, echo-planar sequence with ...
Ouwerkerk Ronald - - 2012
To determine the feasibility of measuring choline and glycogen concentrations in normal human liver in vivo with proton (hydrogen 1 [1H]) magnetic resonance (MR) spectroscopy. Signed consent to participate in an institutional review board-approved and HIPAA-compliant study was obtained from 46 subjects (mean age, 46 years±17 [standard deviation]; 24 women) ...
Stelter Lars - - 2012
OBJECTIVES: To assess the improvement of bile duct visualization in Gd-EOB-DTPA enhanced MR-cholangiography (EOB-MRC) by using an increased flip angle. METHODS: 35 patients underwent Gd-EOB-DTPA enhanced MRI of the liver including T2-weighted MRCP and hepatobiliary phase EOB-MRC using a flip angle of 10° (FA10) and of 35° (FA35), respectively. Images ...
Qi Xingshun - - 2012
Portal vein thrombosis (PVT) is a rare clinical entity in general population, but a relatively frequent entity in liver cirrhosis. Severe PVT-related complications are potentially lethal, such as ischemic intestinal infarction and complications of portal hypertension. Additionally, occlusive PVT can not only increase the incidence of variceal rebleeding, but also ...
Vucic Esad - - 2012
The aim of this study was to noninvasively detect the anti-inflammatory properties of the novel liver X receptor agonist R211945. R211945 induces reversal cholesterol transport and modulates inflammation in atherosclerotic plaques. We aimed to characterize with (18)F-fluorodeoxyglucose (FDG)-positron emission tomography (PET)/computed tomography (CT) and dynamic contrast-enhanced cardiac magnetic resonance (DCE-CMR) ...
Goshima Satoshi - - 2012
PURPOSE: To develop and evaluate a quantitative parameter for staging hepatic fibrosis by contrast enhancement signal intensity and morphological measurements from gadoxetic acid (Gd-EOB-DTPA)-enhanced MR imaging. MATERIALS AND METHODS: MR images were obtained in 93 patients; 75 patients had histopathologically proven hepatic fibrosis and 18 patients who had healthy livers ...
Korkusuz H - - 2012
Purpose: To quantify the correlation between fat content of an acute alcohol intoxication and the difference of computer tomography attenuation value in dual-energy CT in comparison to biochemical triglyceride analysis and to evaluate qualitatively the value of DECT in the diagnosis of fatty liver caused by ethanol-dosage in rats.Materials and ...
Tsuchida Akihiko A Third Department of Surgery, Tokyo Medical University, Tokyo 160-0023, Japan. - - 2012
Type IV-A choledochal cysts (CCs) are a congenital biliary anomaly which involve dilatation of the extrahepatic and intrahepatic bile ducts. We present the case of a 30-year-old woman with type IV-A CC, on whom three-dimensional computed tomography (3D CT) and virtual endoscopy were performed. 3D CT revealed partial dilatation in ...
Guiu Boris - - 2012
Purpose:To compare pure molecular diffusion, D, perfusion-related diffusion, D*, and perfusion fraction, f, determined from diffusion-weighted (DW) magnetic resonance (MR) imaging on the basis of the intravoxel incoherent motion (IVIM) theory in patients with type 2 diabetes with and without liver steatosis.Materials and Methods:This prospective study was approved by the ...
Norén Bengt - - 2012
OBJECTIVES: To apply dynamic contrast-enhanced (DCE) MRI on patients presenting with elevated liver enzymes without clinical signs of hepatic decompensation in order to quantitatively compare the hepatocyte-specific uptake of Gd-EOB-DTPA with histopathological fibrosis stage. METHODS: A total of 38 patients were prospectively examined using 1.5-T MRI. Data were acquired from ...
Silva Luciana Cristina Dos Santos - - 2012
INTRODUCTION: There is no study relating magnetic resonance imaging (MRI) to ultrasound (US) findings in patients with Schistosomiasis mansoni. Our aim was to describe MRI findings inpatients with schistosomal liver disease identified by US. METHODS: Fifty-four patients (mean age 41.6±13.5years) from an area endemic for Schistosomiasis mansoni were selected for ...
Fischer Michael A - - 2012
RATIONALE AND OBJECTIVES: The aim of this study was to evaluate the accuracy of dual-echo (DE) magnetic resonance imaging (MRI) with and without fat and water separation for the quantification of liver fat content (LFC) in vitro and in patients undergoing liver surgery, with comparison to histopathologic analysis. MATERIALS AND METHODS: MRI ...
Gensure Rebekah H - - 2012
The aim of this study was to explore the use of texture features generated from liver computed tomographic (CT) datasets as potential image-based indicators of patient response to radioembolization (RE) with yttrium-90 ((90)Y) resin microspheres, an emerging locoregional therapy for advanced-stage liver cancer. Overall posttherapy survival and percent change in ...
Takahashi M - - 2012
BACKGROUND: Intraoperative ultrasonography (IOUS) is considered the standard for the identification of liver metastases. Use of lipid-stabilized perfluorobutane microbubbles as an ultrasound contrast agent may improve this. The value of contrast-enhanced IOUS (CE-IOUS) in enumerating colorectal liver metastases was studied here. METHODS: CE-IOUS was performed in consecutive resections for colorectal ...
Stampfl Ulrike - - 2012
PURPOSE: To evaluate multimodal visibility of modified currently available microspheres on radiography, magnetic resonance (MR) imaging, and computed tomography (CT) in a porcine liver model. MATERIALS AND METHODS: Livers of four pigs were embolized with two sizes (100 μm ± 25 and 700 μm ± 50) of modified Embozene Microspheres ...
Jørgensen Jan Trøst - - 2012
Manganese is one of the most abundant metals on earth and is found as a component of more than 100 different minerals. Besides being an essential trace element in relation to the metabolic processes in the body, manganese is also a paramagnetic metal that possesses similar characteristics to gadolinium with ...
Motosugi Utaroh U Department of Radiology, University of Yamanashi, 1110 Shimokato, Chuo-shi, Yamanashi-ken, 409-3898, Japan. - - 2013
To examine if liver stiffness measured by magnetic resonance elastography (MRE) is a risk factor for hepatocellular carcinoma (HCC) in patients with chronic liver disease. By reviewing the records of magnetic resonance (MR) examinations performed at our institution, we selected 301 patients with chronic liver disease who did not have ...
Tajima Taku - - 2012
PURPOSE: We compared diagnostic ability for detecting hepatic metastases between gadolinium ethoxy benzyl diethylenetriamine pentaacetic acid (Gd-EOB-DTPA)-enhanced magnetic resonance imaging (MRI) and diffusion-weighted imaging (DWI) on a 1.5-T system, and determined whether DWI is necessary in Gd-EOB-DTPA-enhanced MRI for diagnosing colorectal liver metastases. MATERIALS AND METHODS: We assessed 29 consecutive ...
Mukund Amar - - 2012
Hepatic visceral larva migrans (VLM) refers to a condition characterized by granulomatous liver lesions containing eosinophils and inflammatory cells associated with migration of second-stage larvae of certain nematodes such as toxocara canis. The typical imaging findings described in the literature include small, ill-defined, oval or elongated, low-attenuating nodules with fuzzy ...
Xie Lin - - 2012
BACKGROUND/AIMS: Mitochondrial dysfunction is responsible for liver damage and disease progress in non-alcoholic fatty liver disease (NAFLD). Translocator protein (18 kDa) (TSPO), a mitochondrial transmembrane protein, plays important roles in modulating mitochondrial function. This study explored whether TSPO constitutes an imaging biomarker of noninvasive diagnosis and staging of NAFLD that ...
Koelblinger Claus - - 2012
PURPOSE: To compare the accuracy of liver fat quantification using chemical shift imaging (CSI) and H1 MR-spectroscopy (MRS) at 3.0T in patients undergoing liver resection. METHODS: Totally 35 patients were included in this prospective IRB approved study. The histopathologically assessed liver fat was compared to the hepatic fat fractions calculated ...
Guaraldi Giovanni - - 2012
BACKGROUND: There is an increasing need for new diagnostic tools to monitor antiretroviral drug-related toxicities. Magnetic resonance (MR) imaging and MR spectroscopy are non-invasive diagnostic methods used in the detection and quantification of liver fat. The aim of this study was to compare sensitivity and specificity of different MR techniques ...
Joe Eugene - - 2012
PURPOSE: To evaluate the diagnostic implications of the iterative decomposition of water and fat using echo-asymmetry and the least-squares estimation (IDEAL) technique to detect hepatic steatosis (HS) in potential liver donors using histopathology as the reference standard. MATERIALS AND METHODS: Forty-nine potential liver donors (32 male, 17 female; mean age, ...
Wu Shih-Yen - - 2012
INTRODUCTION: (99m)Tc-labeled macroaggregated albumin ((99m)Tc-MAA) scintigraphy scan is routinely performed for lung perfusion imaging and for the assessment of in vivo distribution of (90)Y-labeled SIR-Spheres prior to selective internal radiation treatment for hepatocellular carcinoma. Positron emission tomography (PET) imaging is superior to gamma scintigraphy in terms of sensitivity, spatial resolution ...
Le Thuy-Anh - - 2012
Bile acid sequestrants (BAS) lower plasma low density lipoprotein levels and improve glycemic control. Colestimide, a BAS, has been claimed by computed tomography to reduce liver fat. Therefore, we examined the efficacy of colesevelam, a potent BAS, to decrease liver fat in patients with biopsy-proven nonalcoholic steatohepatitis (NASH). Liver fat ...
Sanli Yasemin - - 2012
Hepatic adenomatosis is an uncommon benign neoplasm, with the presence of multiple adenomas (generally more than 4) within the liver. A 52-year-old woman presented with multiple (>10) solid liver lesions detected with abdominal ultrasonography and verified with magnetic resonance imaging (MRI). Subsequently, F-18 FDG PET/CT demonstrated increased uptake in these ...
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