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liver focal lesion

N Platz Batista da Silva, M Schauer, M Hornung, S Lang, L P Beyer, I Wiesinger, C Stroszczynski, E M Jung
OBJECTIVE: To evaluate the efficacy of strain elastography (SE) using semi-quantitative measurement methods compared to constrast enhanced ultrasound during liver tumor surgery (Io-CEUS) for dignity assessment of focal liver lesions(FLL). MATERIAL AND METHODS: Prospective data acquisition and retrospective analysis of US data of 100 patients (116 lesions) who underwent liver tumor surgery between 10/2010 and 03/2016. Retrospective reading of SE color patterns was performed establishing groups depending on dominant color (>50% blue = stiff, inhomogenous, >50% yellow/red/green = soft tissue)...
October 20, 2016: Clinical Hemorheology and Microcirculation
Thomas Günther Lesser, Carsten Boltze, Harald Schubert, Frank Wolfram
Background: In recent years, high intensity focused ultrasound (HIFU) has gained increasing clinical interest as a non-invasive method for local therapy of liver malignancies. HIFU treatment of tumours and metastases in the liver dome is limited due to the adjacent ultrasound blocking lung. One-lung flooding (OLF) enables complete sonography of lung and adjoining organs including liver. HIFU liver ablation passing through the flooded lung could enable a direct intercostal beam path and thus improve dose deposition in liver...
2016: International Journal of Medical Sciences
Sangyun Lee, Heejin Kwon, Jihan Cho
RATIONALE AND OBJECTIVES: To investigate image quality characteristics of abdominal computed tomography (CT) scans reconstructed with adaptive statistical iterative reconstruction V (ASIR-V) vs currently using applied adaptive statistical iterative reconstruction (ASIR). MATERIALS AND METHOD: This institutional review board-approved study included 35 consecutive patients who underwent CT of the abdomen. Among these 35 patients, 27 with focal liver lesions underwent abdomen CT with a 128-slice multidetector unit using the following parameters: fixed noise index of 30, 1...
October 10, 2016: Academic Radiology
Nitin Chaubal, Mukund Joshi, Anupam Bam, Rajas Chaubal
No abstract text is available yet for this article.
October 2016: Seminars in Roentgenology
Andrea Agostini, Moritz F Kircher, Richard K G Do, Alessandra Borgheresi, Serena Monti, Andrea Giovagnoni, Lorenzo Mannelli
No abstract text is available yet for this article.
October 2016: Seminars in Roentgenology
You Li, Dongwoon Hyun, Lotfi Abou-Elkacem, Juergen Willmann, Jeremy Dahl
Power Doppler (PD) imaging is a widely used technique for flow detection. Despite the wide use of Doppler ultrasound, limitations exist in the ability of Doppler ultrasound to assess slow flow in small-diameter vasculature, such as the maternal spiral arteries and fetal villous arteries of the placenta and focal liver lesions. The sensitivity of PD in small vessel detection is limited by the low signal produced by slow flow and the noise associated with small vessels. The noise sources include electronic noise, stationary or slowly moving tissue clutter, reverberation clutter, and off-axis scattering from tissue, among others...
October 10, 2016: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
P S Sidhu
In these days of political vagueness, to use a kinder term, although many would describe the situation as turmoil, in Europe, there are success stories to be lauded. Notwithstanding the direction individual countries choose in relation to closer or not so close co-operation in Europe and the direction the political agenda will travel over the next few years, I believe science and in particular medicine has benefited enormously form close co-operation across the European Union and with colleagues outside this political and trading block of nations...
October 2016: Ultraschall in der Medizin
Tassia Soraya Araujo Paixão, Renata Vidal Leão, Natally de Souza Maciel Rocha Horvat, Publio Cesar Cavalcante Viana, Claudia Da Costa Leite, Rodrigo Lautert de Azambuja, Rodrigo Sanford Damasceno, Cinthia Denise Ortega, Marcos Roberto de Menezes, Giovanni Guido Cerri
PURPOSE: The present article provides an overview of the spectrum of abdominal presentations of fishbone (FB) ingestion and its complications. METHODS: In image data from 9 patients, FB perforations were found in different levels of the gastrointestinal tract (GIT), including duodenal, jejunal, and sigmoid perforations; in 4 asymptomatic patients, FBs were observed in the mesentery, falciform ligament, and intestinal bowel. RESULTS: The main imaging features of FB perforation were focal gastric or intestinal wall thickening, fat stranding, bowel obstruction, ascites, localized pneumoperitoneum, intra-abdominal abscess, liver abscess, and a linear hyperdense structure in the abdominal cavity in the GIT or within a parenchymal organ often surrounded by inflammatory changes...
October 8, 2016: Abdominal Radiology
Elma Jahic, Amela Sofic, Azra Husic Selimovic
MATERIAL AND METHODS: The study was of prospective-retrospective character. It was carried out at the AKH in Vienna (Austria), where 100 patients with focal liver lesions were included in the study. All patients underwent the routine MR sequences on appliances 1,5 and 3T (Siemens, Germany): T1, T2, HASTE, VIBE, and a DWI with three b values (b 50, b 300 b 600 s / mm(2)) and ADC map with ROI (regions of interest). The numerical value of ADC map was calculated, where n = 100 liver lesions, by two independent radiologists...
July 16, 2016: Acta Informatica Medica: AIM
Marc Napoleone, Ania Z Kielar, Rebecca Hibbert, Sameh Saif, Benjamin Y M Kwan
PURPOSE: We aimed to evaluate patterns of local tumor progression (LTP) after radiofrequency ablation (RF ablation) of colorectal cancer liver metastases (CRCLM) and to highlight the percentage of LTP not attributable to lesion size or RF ablation procedure-related factors (heat sink or insufficient ablation margin). METHODS: CRCLM treated by RF ablation at a single tertiary care center from 2004-2012, with a minimum of six months of post-procedure follow-up, were included in this retrospective study...
October 3, 2016: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
Nishant Jain, Vinod Kumar
In this paper we have proposed an iterative Fuzzy C-Mean (IFCM) method which divides the pixels present in the image into a set of clusters. This set of clusters is then used to segment a focal liver lesion from a liver ultrasound image. Advantage of IFCM methods is that n-clusters FCM method may lead to non-uniform distribution of centroids, whereas in IFCM method centroids will always be uniformly distributed. Proposed method is compared with the edge based Active contour Chan-Vese (CV) method, and MAP-MRF method by implementing the methods on MATLAB...
November 2016: Journal of Medical Systems
Lambros Tselikas, Frederic Pigneur, Marion Roux, Laurence Baranes, Charlotte Costentin, Vincent Roche, Julien Calderaro, Edouard Herin, Alexis Laurent, Elie Zafrani, Daniel Azoulay, Ariane Mallat, Alain Rahmouni, Alain Luciani
PURPOSE: To compare the added values of hepatobiliary phase (HBP) MRI and contrast-enhanced ultrasound (CEUS) in addition to inconclusive extracellular gadolinium-based contrast-enhanced MRI (CE-MRI) to characterize benign hepatocellular tumors (BHT). METHODS: Eighty-three BHT-46 focal nodular hyperplasia (FNH) and 37 hepatocellular adenomas (HCA)-with inconclusive CE-MRI in 54 patients (43 women and 11 men, mean age 42 years old ± 14.8) were retrospectively analyzed...
October 4, 2016: Abdominal Radiology
Nurver Ulger Toprak, Gulcin Balkose, Deniz Durak, Ender Dulundu, Tolga Demirbaş, Cumhur Yegen, Guner Soyletir
Extra-intestinal infections due to Clostridium difficile have been reported rarely. Herein we report a case of pyogenic liver abscess from toxigenic C. difficile in an 80-year-old non-hospitalized woman with diabetes mellitus, cerebrovascular and cardiovascular diseases. The patient was admitted to the emergency department with fever and abdominal pain. There was no history of diarrhea or use of antibiotics. Laboratory parameters revealed signs of inflammation and elevated AST and ALT levels. Abdominal ultrasound and computer tomography showed multiple focal lesions in the bilateral liver lobes and hydropic gallbladder with stones...
September 28, 2016: Anaerobe
Rama S Ayyala, Sudha A Anupindi, Michael J Callahan
Magnetic resonance imaging is commonly used to evaluate for hepatic and biliary pathology in the pediatric population. Recently, there has been increased use of hepatocyte-specific contrast agents (HSCAs), such as Gadoxetate disodium in children. Traditionally, HSCAs have been used to characterize focal liver lesions. However, these agents can also be used to problem solve specific hepatic or biliary diagnostic dilemmas. The purpose of this manuscript is to review the practical uses of HSCA in children with both hepatic and biliary indications, and review the corresponding imaging findings...
September 28, 2016: Abdominal Radiology
Michele Scialpi, Luisa Pierotti, Sabrina Gravante, Alberto Rebonato, Irene Piscioli, Alfredo D'Andrea, Raffaele Schiavone, Barbara Palumbo
BACKGROUND: In oncologic patients, the liver is the most common target for metastases. An accurate detection and characterization of focal liver lesions in patients with known primary extrahepatic malignancy are essential to define management and prognosis. OBJECTIVES: To assess the diagnostic accuracy of the split-bolus multidetector-row computed tomography (MDCT) protocol in the characterization of focal liver lesions in oncologic patients. PATIENTS AND METHODS: We retrospectively analyzed the follow-up split-bolus 64-detector row CT protocol in 36 oncologic patients to characterize focal liver lesions...
April 2016: Iranian Journal of Radiology: a Quarterly Journal Published By the Iranian Radiological Society
Teerapat Ungtrakul, Chulabhorn Mahidol, Pattra Chun-On, Charlie Laohapand, Surachate Siripongsakun, Akeanong Worakitsitisatorn, Sirachat Vidhayakorn, Wariya Boonchuay, Jiraporn Dechma, Gaidganok Sornsamdang, Kamonwan Soonklang, Tassanee Sriprayoon, Tawesak Tanwandee, Chirayu U Auewarakul
AIM: To determine the role of screening and surveillance of hepatocellular carcinoma (HCC) in treatment-naïve chronic hepatitis B (CHB) patients. METHODS: We recruited 2293 CHB patients (both males and females; aged 20-65 years). All patients were screened and underwent surveillance using abdominal ultrasonography (AUS) and serum alpha-fetoprotein (AFP) assay every 6 mo. The diagnosis, staging and treatment of HCC followed the American Association for the Study of Liver Diseases practice guidelines and the Barcelona Clinic Liver Cancer guidelines...
September 14, 2016: World Journal of Gastroenterology: WJG
Ayman Alsebaey, Eman Aly Ahmedy
BACKGROUND: Hepatocellular carcinoma (HCC) is a dreadful complication of end stage liver disease with high morbidity and mortality. AIM: The aim was to assess the role of serum talin-1 and non-invasive brosis in patients with HCC. MATERIALS AND METHODS: A total of eighty seven subjects were enrolled, with 22 two healthy individuals as a control group (n=22), 22 patients in the cirrhosis group and finally 43 in the group with HCC diagnosed with positive triphasic CT abdomen criteria...
2016: Asian Pacific Journal of Cancer Prevention: APJCP
M Barral, C Eveno, C Hoeffel, M Boudiaf, P Bazeries, R Foucher, M Pocard, A Dohan, P Soyer
Magnetic resonance imaging (MRI) plays now a major role in patients with colorectal cancer regarding tumor staging, surgical planning, therapeutic decision, assessment of tumor response to chemoradiotherapy and surveillance of rectal cancer, and detection and characterization of liver or peritoneal metastasis of colorectal cancers. Diffusion-weighted MRI (DW-MRI) is a functional imaging tool that is now part of the standard MRI protocol for the investigation of patients with colorectal cancer. DW-MRI reflects micro-displacements of water molecules in tissues and conveys high degrees of accuracy to discriminate between benign and malignant colorectal conditions...
September 8, 2016: Journal of Visceral Surgery
Govind B Chavhan, Susan Shelmerdine, Kartik Jhaveri, Paul S Babyn
Magnetic resonance (MR) imaging is increasingly being used for comprehensive evaluation of liver diseases in children because of the lack of radiation and better lesion detection and characterization. Liver examination involves routine sequences such as T2-weighted, balanced steady-state free precession, and in-phase and out-of-phase sequences. Dynamic imaging is an essential component of liver examination to characterize focal lesions and involves capturing snapshots of the passage of contrast material in the arterial, portal venous, equilibrium, and sometimes hepatobiliary phases, generally by using T1-weighted three-dimensional gradient-echo sequences...
September 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
Martin Barrio, Johannes Czernin, Michael W Yeh, Miguel F Palma Diaz, Pawan Gupta, Martin Allen-Auerbach, Christiaan Schiepers, Ken Herrmann
BACKGROUND: The clinical significance of incidental thyroid abnormalities discovered in fluorine-18 fluorodeoxyglucose (F-FDG) PET/computed tomography (CT) (FDG PET/CT) studies remains controversial. The aim of this large retrospective study was to (a) determine the prevalence of focal F-FDG thyroid uptake on whole-body F-FDG PET/CT studies carried out for nonthyroid cancers and (b) to test whether intense focal F-FDG thyroid uptake is associated with malignancy. MATERIALS AND METHODS: A total of 11 921 F-FDG PET/CT studies in 6216 patients carried out at our institution between January 2012 and December 2014 were analyzed...
September 8, 2016: Nuclear Medicine Communications
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