Search Results
Results 201 - 250 of 1599
< 1 2 3 4 5 6 7 8 9 10 >
Bense László - - 2011
A male metal worker, who has never smoked, contracted debilitating dyspnoea in 2003 which then deteriorated until 2007. Spirometry and chest x-rays provided no diagnosis. A 3D-image of the airways was reconstructed from a high-resolution CT (HRCT) in 2007, showing peribronchial air on the right side, mostly along the presegmental ...
Luboldt Wolfgang - - 2010
The purpose of this study was to standardize therapy monitoring of hepatic metastases from gastroenteropancreatic neuroendocrine tumors (GEP-NETs) during the course of somatostatin receptor radionuclide therapy (SRRT). In 21 consecutive patients with nonresectable hepatic metastases of GEP-NETs, chromogranin A (CgA) and 68Ga-DOTATOC PET/CT were compared before and after the last ...
Uchiyama Kazuhisa - - 2010
The purpose of this study was to assess the concomitant use of contrast-enhanced intraoperative ultrasound (CE-IOUS) using the new microbubble agent Sonazoid, and to assess the fluorescence navigation system (Photo Dynamic Eye, or PDE) using indocyanine green (ICG) as a novel tool for identifying colorectal metastatic lesions compared with preoperative ...
Wakamatsu Hideyuki - - 2010
Predicting liver functional reserve is important before partial hepatectomy. However, it is difficult to predict using morphologic imaging modalities, such as CT and MRI. In this study, we assess the usefulness of galactosyl human serum albumin (GSA) scintigraphy in predicting liver function recovery. We performed 99mTc-GSA scintigraphy before operation in ...
Sanuki-Fujimoto N - - 2010
This study aimed to assess the imaging appearances of focal liver reactions following stereotactic body radiotherapy (SBRT) for small hepatocellular carcinoma (HCC) and to examine relationships between imaging appearance and baseline liver function. We retrospectively studied 50 lesions in 47 patients treated with SBRT (30-40 Gy in 5 fractions) for ...
Karçaaltıncaba Muşturay - - 2011
Focal, segmental, and diffuse liver pathologies have been described in the literature. This article describes a pattern in which liver pathology is confined to a lobe. This lobar pattern has not been described previously to our knowledge. Herein, we illustrate computed tomography (CT) and magnetic resonance imaging (MRI) findings of ...
Krause Werner - - 2011
The aim of this study was to evaluate the computed tomography (CT)-imaging potential of iopromide-carrying liposomes (SPC/CH/SPG, 6:3:1) of approximately 200 nm in diameter in healthy rabbits and in rabbits with implanted liver tumors in an intraindividual comparison with iopromide. Normal rabbits and animals with VX2 tumors implanted into the liver ...
Cheung Jerry S - - 2010
To characterize changes in diffusion properties of liver using diffusion tensor imaging (DTI) in an experimental model of liver fibrosis. Liver fibrosis was induced in Sprague-Dawley rats (n = 12) by repetitive dosing of carbon tetrachloride (CCl(4)). The animals were examined with a respiratory-gated single-shot spin-echo echo-planar DTI protocol at ...
Kawasaki Satsuki - - 2010
Usefulness of abdominal ultrasonography for quantitative estimation of fatty liver by measurement of para- and perirenal sonographic fat thickness (UFT) was investigated. Study subjects were 286 patients hospitalized for the treatment of diabetes. These subjects underwent blood chemistry studies, abdominal ultrasonography, and CT. On sonography, the thickness of combined para- ...
Osimani Marcello - - 2010
To determine the optimal 64-multidetector-row computed tomography scan delay from bolus-tracking trigger for the arterial phase and the evaluation of vascularization in healthy liver. One hundred twenty patients are randomized into 3 groups according to scan delay (5-, 10-, 15-second arterial phase) and underwent CT of the liver. Images were ...
Cheon Jung-Eun - - 2010
To determine whether there is a correlation between liver MR findings and the clinical manifestations and severity of liver dysfunction in patients with Wilson's disease. Two radiologists retrospectively evaluated MR images of the liver in 50 patients with Wilson's disease. The Institutional Review Board approved this retrospective study and informed ...
Eccles Cynthia L - - 2011
For patients receiving liver stereotactic body radiotherapy (SBRT), abdominal compression can reduce organ motion, and daily image guidance can reduce setup error. The reproducibility of liver shape under compression may impact treatment delivery accuracy. The purpose of this study was to measure the interfractional variability in liver shape under compression, ...
Radhakrishnan Venkatraman - - 2010
Pediatric nasopharyngeal carcinoma (NPC) is rare and usually poorly differentiated. We report a 14-year-old boy with NPC with metastases to liver, spleen, lymph nodes and bone marrow. The liver metastases closely resembled benign cystic liver disease on imaging; however, they showed intense uptake similar to other metastatic sites on positron ...
Sheng Yaqi - - 2010
In this study, the time-dependent changes on dynamic computed tomograph (CT) of radiation-induced liver injury in gastric cancer patients was examined. The CT images of 52 gastric cancer patients who had received chemoradiotherapies were reviewed on the PACS system. Dynamic CT scan was performed in all the subjects. Our results ...
Haque Muhammad - - 2010
To demonstrate feasibility of functional MRI of liver using glucose as a stimulus to monitor metabolic changes using blood oxygenation level dependent (BOLD) contrast. We hypothesized that during hyperglycemia, liver stores the glucose and consequently there is a reduction in oxygen consumption, which can be detected using BOLD MRI. In ...
Shang Sherry S - - 2010
Neoplastic and nonneoplastic diseases may involve the liver with a regional distribution, which is defined as a non-focal process without any specific anatomic predilection. In this pictorial essay we review hepatic diseases commonly presenting with a regional distribution in the liver and describe the CT and MR imaging findings helpful ...
Ju Shenghong - - 2010
It was unclear whether systemically administered mesenchymal stem cells (MSCs) labeled with magnetic nanoparticles can transdifferentiate into hepatocytes. In the present study, we built a new in vivo murine model for monitoring the transdifferentiation of magnetically labeled green fluorescent protein (GFP) positive MSCs into albumin-positive hepatocytes, under the carbon tetrachloride ...
van der Vorst Joost R - - 2010
After extended liver resection, a remnant liver that is too small can lead to postresection liver failure. To reduce this risk, preoperative evaluation of the future liver remnant volume (FLRV) is critical. The open-source OsiriX PAC software system can be downloaded for free and used by nonradiologists to calculate liver ...
Motosugi Utaroh U Department of Radiology, University of Yamanashi, Shimokato, Chuo, Japan. - - 2010
The aim of this study was to estimate inter-rater reliability and validate magnetic resonance elastography (MRE) as a tool to measure liver elasticity. The study protocol was approved by the institutional review board at our institution. In all, 10 normal volunteers and 110 patients, who provided written informed consent, were ...
Tamada Tsutomu - - 2011
The purpose of this study was to assess the difference in the activity of biliary and renal excretion between normal and cirrhotic livers on contrast-enhanced MR imaging obtained with gadolinium ethoxybenzyl diethylenetriaminepentaacetic acid (Gd-EOB-DTPA). A total of 78 patients with cirrhotic liver (n=44) and with normal liver (n=34) underwent multi-phase ...
Moteki Takao - - 2011
To determine whether diffusion-weighted echo-planar MR images are sensitive to liver perfusion difference. Noncirrhotic livers of 71 patients (43 males, 28 females; age range, 22-87 years; mean, 61 years) without (n=51) and with (n=20) significant (>70%) portal vein stenosis (accompanying proximal hepatic arterial stenosis and/or biliary tract obstruction in 10) ...
Tian Qin - - 2010
Two kinds of glycyrrhetinic acid-modified chitosan/poly(ethylene glycol) nanoparticles (CTS/PEG-GA NPs) were prepared by an ionic gelation process in which the liver targeting ligand glycyrrhetinic acid (GA) was introduced into the nanoparticles at the C(30)-carboxyl group (CTS/PEG-GA(c) NPs) or the C(3)-hydroxyl group (CTS/PEG-GA(h) NPs). Their characteristics, especially their ability to target ...
d'Assignies Gaspard - - 2011
The purpose of this study was to evaluate the ability of a whole liver volume (WLV) segmentation algorithm to measure fat fraction (FF). Twenty consecutive patients with histologically proven fatty liver disease underwent dual-echo in-phase/out-of-phase MRI and magnetic resonance spectroscopy (MRS) at 1.5 T. Two readers independently performed semiautomatic 3D liver ...
Zhang Long-Jiang - - 2010
To compare virtual non-enhanced liver CT (VNCT) from dual-energy CT (DECT) with true non-enhanced liver CT (TNCT) in patients. A total of 102 patients underwent multi-phase abdominal CT. Liver arterial VNCT (VNCT(A)) and portovenous VNCT (VNCT(V)) images were derived from the arterial and portovenous DECT data. The mean CT number, ...
Ceylan Naim - - 2010
OBJECTIVES: To review the computed tomography (CT) findings of common and uncommon high-attenuation pulmonary lesions and to present a classification scheme of the various entities that can result in high-attenuation pulmonary abnormalities based on the pattern and distribution of findings on CT. BACKGROUND: High-attenuation pulmonary abnormalities can result from the ...
Widmann Gerlig - - 2010
Control of respiratory motion is an essential prerequisite for stereotactic computer-assisted and robotic interventions in the liver. The respiratory motion control error (RMCE) of temporary disconnections of the endotracheal tube (ETT) in anaesthetized patients has been evaluated during computer tomography (CT)-guided liver punctures. Two arterial and portal phase contrast-enhanced planning ...
Lee Jongmee - - 2010
The purpose of this study was to describe magnetic resonance (MR) findings of focal eosinophilic liver disease using gadoxetic acid (Gd-EOB-DTPA). Nineteen patients (M:F=14:5; age range, 26-66 years; mean age, 50 years) with 35 focal eosinophilic liver lesions were included after reviewing the medical records of 482 patients who underwent ...
Niehues Stefan M - - 2010
Volumetric assessment of the liver regularly yields discrepant results between pre- and intraoperatively determined volumes. Nevertheless, the main factor responsible for this discrepancy remains still unclear. The aim of this study was to systematically determine the difference between in vivo CT-volumetry and ex vivo volumetry in a pig animal model. ...
Bashir Mustafa R - - 2011
One of the advantages of using hepatobiliary contrast agents in liver MRI is the ability to acquire a delayed, "hepatocyte phase" dataset. This phase highlights many types of lesions as hypointense compared with the liver, because of the accumulation of contrast material in functioning hepatocytes and non-retention within most lesions. ...
Ba-Ssalamah Ahmed - - 2010
MRI has become the most important imaging modality for detecting and characterizing focal liver lesions. The introduction of high-field-strengths, such as 3 Tesla MR imaging, in combination with the parallel imaging technique, has led to significant improvements in spatial and temporal resolution and has established this technique as a valuable ...
Heizmann Oleg - - 2010
BACKGROUND: The implementation of intraoperative navigation in liver surgery is handicapped by intraoperative organ shift, tissue deformation, the absence of external landmarks, and anatomical differences in the vascular tree. To investigate the impact of surgical manipulation on the liver surface and intrahepatic structures, we conducted a prospective clinical trial. METHODS: ...
Lim Soo-Jeong - - 2010
RATIONALE AND OBJECTIVES: To characterize an iodized oil emulsion for computed tomography (CT) imaging of experimental hepatic tumors in rat models. MATERIALS AND METHODS: For characterizing the agents in normal rats, three rats were intravenously infused and imaged with clinical CT up to 1 week. Iopamidol solution was also used ...
Balaji Ravikanth - - 2010
BACKGROUND: The aim of this study was to report magnetic resonance imaging (MRI) features of cystic lymphangiomas of the breast. METHODS: MRI of the breast was performed using a phased-array double breast coil with a 1.5-T MR scanner. Routine T1 and T2 and post-contrast sequential imaging was performed. RESULTS: The ...
Stang Axel - - 2010
To prospectively evaluate the role of real-time ultrasonography (US)-computed tomography (CT) fusion imaging (US-CT) in comparison with US seeing separate CT images (US + CT) and multidetector-row CT (MDCT) for the correct staging of hepatic metastatic involvement in patients with colorectal cancer. Sixty-four patients with newly diagnosed colorectal cancer and ...
Cesbron-Métivier Elodie - - 2010
AIMS: To evaluate the accuracy of different techniques of MRI steatosis quantification, based on histological grading and quantification of liver steatosis. PATIENTS AND METHODS: Twenty-three patients (21 with nonalcoholic fatty liver disease and two controls) were included. Steatosis was evaluated in liver specimens using histological grading (five grades) and steatosis ...
Roth Christopher J - - 2010
OBJECTIVE: The purpose of this investigation was to assess workflow for medical imaging studies, specifically comparing liver and knee MRI examinations by use of the Lean Six Sigma methodologic framework. The hypothesis tested was that the Lean Six Sigma framework can be used to quantify MRI workflow and to identify ...
Chandarana Hersh - - 2010
Liver metastases are the most frequently encountered malignant liver lesions in the Western countries. Accurate diagnosis of liver metastases is essential for appropriate management of these patients. Multiple imaging modalities, including ultrasound, CT, positron emission tomography, and MRI, are available for the evaluation of patients with suspected or known liver ...
Fischer Michael A - - 2010
To prospectively evaluate a 3-dimensional spoiled gradient-dual-echo (3D SPGR-DE) magnetic resonance imaging (MRI) sequence for the qualitative and quantitative analysis of liver fat content (LFC) in patients with the suspicion of fatty liver disease using histopathology as the standard of reference. Thirty-four adult patients (15 women; mean age, 67 +/- ...
Mayerhoefer Marius E - - 2010
To determine the feasibility of texture analysis for the classification of liver cysts and hemangiomas, on nonenhanced, zero-fill interpolated T1- and T2-weighted MR images. Forty-five patients (26 women and 19 men; mean age, 58.1 +/- 16.9 years) with liver cysts or hemangiomas were enrolled in the study. After exclusion of ...
Frilling Andrea - - 2010
The incidence of neuroendocrine tumours (NET) has increased over the past three decades. Hepatic metastases which occur in up to 75% of NET patients significantly worsen their prognosis. New imaging techniques with increasing sensitivity enabling tumour detection at an early stage have been developed. The treatment encompasses a panel of ...
Kirk Paul P Imperial College and Royal Brompton Hospital, London, United - - 2010
To examine the reproducibility of the single breathhold T2* technique from different scanners, after installation of standard methodology in five international centers. Up to 10 patients from each center were scanned twice locally for local interstudy reproducibility of heart and liver T2*, and then flown to a central MR facility ...
Hatta Tomoko - - 2010
To assess the degree of hepatic fat content, simple and noninvasive methods with high objectivity and reproducibility are required. Magnetic resonance imaging (MRI) is one such candidate, although its accuracy remains unclear. We aimed to validate an MRI method for quantifying hepatic fat content by calibrating MRI reading with a ...
Silva Luciana C S - - 2010
For the last two decades, ultrasound (US) has been considered a surrogate for the gold standard in the evaluation of liver fibrosis in schistosomiasis. The use of magnetic resonance imaging (MRI) is not yet standardised for diagnosing and grading liver schistosomal fibrosis. The aim of this paper was to analyse ...
Fan Zhaoyang - - 2010
OBJECTIVE: To investigate blood oxygen level-dependent (BOLD) response of human liver to hyperoxic exposure under fasting and postprandial conditions. METHODS: Twelve healthy volunteers and 1 patient with chronic liver disease underwent liver BOLD magnetic resonance imaging at 3.0T. The BOLD images of a single slice were collected (1 image per ...
Goetti Robert - - 2010
PURPOSE: To assess the feasibility and image quality of computed tomography (CT) liver perfusion imaging using an adaptive 4D spiral-mode, developed to extend the z-axis coverage, and to report initial qualitative and quantitative results in patients with cancer metastases. MATERIALS AND METHODS: A total of 21 patients with liver metastases ...
Voieta Izabela - - 2010
Few publications have compared ultrasound (US) to histology in diagnosing schistosomiasis-induced liver fibrosis (LF); none has used magnetic resonance (MR). The aim of this study was to evaluate schistosomal LF using these three methods. Fourteen patients with hepatosplenic schistosomiasis admitted to hospital for surgical treatment of variceal bleeding were investigated. ...
Cruite Irene - - 2010
The purpose of this article is to review the use of gadolinium-ethoxybenzyl-diethylenetriamine pentaacetic acid (gadoxetate disodium [Gd-EOB-DTPA]) in the cirrhotic liver and illustrate the imaging appearance of lesions commonly encountered in the cirrhotic liver. Gd-EOB-DTPA shows promise as a problem-solving tool in the cirrhotic liver because it provides additional information ...
Fabre Monique - - 2010
Kupffer cells (KCs), the resident macrophages of the liver, display a phagocytic activity that is not well quantified in animal models. Its experimental invalidation in rodents has been carried out by various means, among which the gadolinium chloride (GdCl₃) injection has been widely used, and has been generally monitored by ...
Nanashima Atsushi - - 2010
To identify predictors of changes in functional hepatic volumes after portal vein embolization (PVE) before hepatectomy, we examined the relationship between hepatic functional parameters and changes in functional volume of the embolized and non-embolized liver based on a previous volumetric analysis. Subjects were 24 patients who underwent PVE, which was ...
Inoue Akira - - 2010
To evaluate whether a comprehensive image processing method as CAD using CT and MRI can improve the radiologists' diagnosis performance in the differentiation of focal liver lesions. A clinical image database used in this study consists of 14 cases of each lesion including hepatic cysts, hepatocellular carcinoma (HCC), metastatic liver ...
< 1 2 3 4 5 6 7 8 9 10 >