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transient elastography

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https://www.readbyqxmd.com/read/28431795/shear-wave-liver-elastography-with-a-propagation-map-diagnostic-performance-and-inter-observer-correlation-for-hepatic-fibrosis-in-chronic-hepatitis
#1
Eun Sun Lee, Jong Beum Lee, Hwi Ryong Park, Jeongin Yoo, Ji In Choi, Hyun Woong Lee, Hyung Joon Kim, Byung Ihn Choi, Hyun Jeong Park, Sung Bin Park
The aim of this study was to determine the performance of shear wave elastography (SWE) with a propagation map in the diagnosis of hepatic fibrosis, and to assess its reliability with transient elastography (TE) as the reference standard. Our prospective study included 115 consecutive patients with suspected or alleged chronic hepatitis. Patients underwent SWE by two different operators and TE by sonographers on the same day. The correlation coefficient of the intra-class correlation test between an experienced radiologist and a third-year radiology resident was 0...
April 18, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28426437/supersonic-transient-magnetic-resonance-elastography-for-quantitative-assessment-of-tissue-elasticity
#2
Yu Liu, Jingfei Liu, Brett Z Fite, Josquin Foiret, Asaf Ilovitsh, J Kent Leach, Erik Dumont, Charles F Caskey, Katherine W Ferrara
Non-invasive, quantitative methods to assess the properties of biological tissues are needed for many therapeutic and tissue engineering applications. Magnetic resonance elastography (MRE) has historically relied on external vibration to generate periodic shear waves. In order to focally assess a biomaterial or to monitor the response to ablative therapy, the interrogation of a specific region of interest by a focused beam is desirable and transient MRE (t-MRE) techniques have previously been developed to accomplish this goal...
April 20, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28425404/transient-elastography-vs-aspartate-aminotransferase-to-platelet-ratio-index-in-hepatitis-c-a-meta-analysis
#3
A Z Mattos, A A Mattos
BACKGROUND AND RATIONALE: Many different non-invasive methods have been studied with the purpose of staging liver fibrosis. The objective of this study was verifying if transient elastography is superior to aspartate aminotransferase to platelet ratio index for staging fibrosis in patients with chronic hepatitis C. MATERIAL AND METHODS: A systematic review with meta-analysis of studies which evaluated both non-invasive tests and used biopsy as the reference standard was performed...
May 2017: Annals of Hepatology
https://www.readbyqxmd.com/read/28425401/mre-in-nafld-promising-but-further-validation-is-required
#4
John D Ryan, Emmanuel A Tsochatzis
MR elastography is a novel method for non-invasive fibrosis assessment, not yet sufficiently validated. In a recent study in 104 patients Park, Gastroenterology 2017; 152: 598-602), MRE was compared to transient elastography for the diagnosis of fibrosis is nonalcoholic fatty liver disease. The current viewpoint critically appraises this study.
May 2017: Annals of Hepatology
https://www.readbyqxmd.com/read/28422391/mr-elastography-detection-of-early-viscoelastic-response-of-the-murine-hippocampus-to-amyloid-%C3%AE-accumulation-and-neuronal-cell-loss-due-to-alzheimer-s-disease
#5
Tonia Munder, Anna Pfeffer, Stefanie Schreyer, Jing Guo, Juergen Braun, Ingolf Sack, Barbara Steiner, Charlotte Klein
PURPOSE: To investigate in vivo viscoelastic parameters related to early histopathological changes in the hippocampus and the cortex in early, preclinical Alzheimer's disease (AD) stages. MATERIALS AND METHODS: Magnetic resonance elastography (MRE) was applied to female APP23 mice, an established transgenic mouse model of AD, at three different stages early in disease progression. To investigate the potential therapeutic effects of physical, cognitive, and social stimulation on brain viscoelasticity and histopathological characteristics, MRE was also applied after exposing young APP23 mice to environmentally enriched cage conditions (ENR), for 1, 12, or 24 weeks, which corresponds to adolescent, young-adult, and adult age at the time of analysis...
April 19, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28422266/transient-elastography-may-improve-detection-of-liver-fibrosis-in-psoriasis-patients-treated-with-methotrexate
#6
Toomas Talme, Pernilla Nikamo, Peter Rosenberg, Mona Ståhle
No abstract text is available yet for this article.
April 19, 2017: Acta Dermato-venereologica
https://www.readbyqxmd.com/read/28422172/transient-elastography-as-a-screening-tool-for-liver-fibrosis-in-a-large-hemodialysis-population
#7
Ben-Chung Cheng, Yi-Hao Yen, Jung-Fu Chen, Cheng-Kun Wu, Kuo-Chin Chang, Po-Lin Tseng, Ming-Chao Tsai, Ming-Tsung Lin, Jung-Ting Lin, Jin-Bor Chen, Tsung-Hui Hu
Metabolic syndrome, an etiological factor in non-alcoholic fatty liver disease (NAFLD), is often present in hemodialysis patients. Little is known about the prevalence of, and factors associated with, liver fibrosis in hemodialysis populations. We used transient elastography (TE) to investigate these phenomena. 659 patients treated with chronic hemodialysis were enrolled. We excluded those with excess alcohol intake, liver stiffness measurement (LSM) failure, or unreliable LSM values. LSM ≥8.0 kPa was used as a cutoff suggesting clinically relevant fibrosis...
April 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28416221/ombitasvir-paritaprevir-and-ritonavir-plus-dasabuvir-for-8-weeks-in-previously-untreated-patients-with-hepatitis-c-virus-genotype-1b-infection-without-cirrhosis-garnet-a-single-arm-open-label-phase-3b-trial
#8
Tania M Welzel, Tarik Asselah, Emily O Dumas, Stefan Zeuzem, David Shaw, Rawi Hazzan, Xavier Forns, Tami Pilot-Matias, Wenjing Lu, Daniel E Cohen, Jordan J Feld
BACKGROUND: Clinical studies have shown high rates of sustained virological response (hepatitis C virus [HCV] RNA <15 IU/mL) at post-treatment week 12 (SVR12) in patients with genotype 1b infection with and without cirrhosis who received coformulated ombitasvir, paritaprevir, and ritonavir, plus dasabuvir, without ribavirin, for 12 weeks. In this study, we aimed to assess 8-week treatment with ombitasvir, paritaprevir, and ritonavir, plus dasabuvir, without ribavirin in patients infected with HCV genotype 1b without cirrhosis...
April 13, 2017: Lancet. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28415898/-31-phosphorus-magnetic-resonance-spectroscopy-of-the-liver-for-evaluating-inflammation-and-fibrosis-in-autoimmune-hepatitis
#9
Lauri Puustinen, Antti Hakkarainen, Reetta Kivisaari, Sonja Boyd, Urpo Nieminen, Martti Färkkilä, Nina Lundbom, Perttu Arkkila
BACKGROUND: Liver biopsy is the gold standard in evaluating inflammation and fibrosis in autoimmune hepatitis. AIMS: In search of non-invasive follow-up tools in autoimmune hepatitis, we evaluated (31)phosphorus magnetic resonance spectroscopy ((31)P MRS). METHODS: Twelve consecutive AIH patients (mean age 42.8 years, 10 women) underwent liver biopsy, routine laboratory liver function tests, which were compared to findings in (31)P MRS and transient elastography (TE)...
April 17, 2017: Scandinavian Journal of Gastroenterology
https://www.readbyqxmd.com/read/28407734/the-inverse-effect-of-meal-intake-on-controlled-attenuation-parameter-and-liver-stiffness-as-assessed-by-transient-elastography
#10
Kanittha Ratchatasettakul, Sasivimol Rattanasiri, Kwannapa Promson, Pranee Sringam, Abhasnee Sobhonslidsuk
BACKGROUND: Controlled attenuation parameter (CAP) and liver stiffness (LS) measured by transient elastography (TE, Fibroscan®) have been used for steatosis and fibrosis assessment. We evaluated the effect of meal intake on CAP and LS values. METHODS: Forty patients who had had a liver biopsy within the previous month were recruited. The biopsy was graded for fibrosis (F) and steatosis (S) stagings. TE was performed after overnight fasting (baseline values) and 15, 30, 45, 60, 90, and 120 min following the intake of a standard commercial formula meal, and every 30 min until LS and CAP values returned to baseline...
April 13, 2017: BMC Gastroenterology
https://www.readbyqxmd.com/read/28404158/prevalence-of-clinically-significant-liver-disease-within-the-general-population-as-defined-by-non-invasive-markers-of-liver-fibrosis-a-systematic-review
#11
REVIEW
Rebecca Harris, David J Harman, Timothy R Card, Guruprasad P Aithal, Indra Neil Guha
As of 2016, there is no evidence-based pathway to stratify the risk of chronic liver disease in a general population setting. Non-invasive tests of liver fibrosis might provide a mechanism for earlier diagnosis. These tests have been extensively validated in the hospital setting but their performance in a general population setting is unclear. We did a systematic review of non-invasive tests used to stratify patients at risk of clinically significant liver disease in a general population setting and report the prevalence of chronic liver disease as defined by these tests...
April 2017: Lancet. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28404098/screening-for-liver-fibrosis-in-the-general-population-a-call-for-action
#12
Pere Ginès, Isabel Graupera, Frank Lammert, Paolo Angeli, Llorenç Caballeria, Aleksander Krag, I Neil Guha, S Darwish Murad, Laurent Castera
Liver cirrhosis is one of the main causes of death and disability-adjusted life-years worldwide. Generally, cirrhosis develops after a long period of liver-cell injury that leads to the deposition of collagen, leading to progressive fibrosis and nodule formation in the liver tissue. Most patients are diagnosed in late stages when liver decompensation or liver cancer develops. The diagnosis is rarely made in early stages-when liver fibrosis is mild to moderate but cirrhosis is not yet established-because the disease is asymptomatic...
November 2016: Lancet. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28396861/non-invasive-investigations-for-the-diagnosis-of-fontan-associated-liver-disease-in-pediatric-and-adult-fontan-patients
#13
Amyna Fidai, Frederic Dallaire, Nanette Alvarez, Yvonne Balon, Robin Clegg, Michael Connelly, Frank Dicke, Deborah Fruitman, Joyce Harder, Kimberley Myers, David J Patton, Tim Prieur, Erika Vorhies, Robert P Myers, Steven R Martin, Steven C Greenway
Fontan-associated liver disease (FALD) is a serious complication related to the chronically elevated venous pressure and low cardiac output of this abnormal circulation. However, diagnostic markers for this condition are limited. We hypothesized that specific tests for fibrosis developed for other chronic liver diseases would identify a higher prevalence of FALD than ultrasound and standard laboratory tests and that identified abnormalities would correlate with time post-Fontan. In this cross-sectional study, we assessed 19 children (average age 8...
2017: Frontiers in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28392997/fatty-liver-associated-with-metabolic-derangement-in-patients-with-chronic-kidney-disease-a-controlled-attenuation-parameter-study
#14
Chang-Yun Yoon, Misol Lee, Seung Up Kim, Hyunsun Lim, Tae Ik Chang, Youn Kyung Kee, Seung Gyu Han, In Mee Han, Young Eun Kwon, Kyoung Sook Park, Mi Jung Lee, Jung Tak Park, Seung Hyeok Han, Sang Hoon Ahn, Shin-Wook Kang, Tae-Hyun Yoo
BACKGROUND: Hepatic steatosis measured with controlled attenuation parameter (CAP) using transient elastography predicts metabolic syndrome in the general population. We investigated whether CAP predicted metabolic syndrome in chronic kidney disease patients. METHODS: CAP was measured with transient elastography in 465 predialysis chronic kidney disease patients (mean age, 57.5 years). RESULTS: The median CAP value was 239 (202-274) dB/m. In 195 (41...
March 2017: Kidney Research and Clinical Practice
https://www.readbyqxmd.com/read/28387018/transient-elastography-alone-and-in-combination-with-fibrotest-%C3%A2-for-the-diagnosis-of-hepatic-fibrosis-in-alcoholic-liver-disease
#15
Cosmin Sebastian Voican, Alexandre Louvet, Jean-Baptiste Trabut, Micheline Njiké-Nakseu, Sébastien Dharancy, Andrea Sanchez, Marion Corouge, Karima Lamouri, Amandine Lebrun, Axel Balian, Sophie Prévot, Mounia Lachgar, Sophie Maitre, Hélène Agostini, Philippe Mathurin, Gabriel Perlemuter, Sylvie Naveau
BACKGROUND&AIMS: The reliability of transient elastography (TE) to assess liver fibrosis is insufficiently validated in alcoholic liver disease (ALD). We aimed to validate the diagnostic utility of TE for liver fibrosis in patients with excessive alcohol consumption and evaluate whether Fibrotest(®) adds diagnostic value relative to or in combination with TE. METHODS: We conducted a multicenter prospective study on a total of 217 heavy drinkers with high serum aminotransferase levels...
April 7, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28380632/evaluation-of-right-ventricular-function-using-liver-stiffness-in-patients-with-left-ventricular-assist-device%C3%A2
#16
Noriyuki Kashiyama, Koichi Toda, Teruya Nakamura, Shigeru Miyagawa, Hiroyuki Nishi, Yasushi Yoshikawa, Satsuki Fukushima, Shunsuke Saito, Daisuke Yoshioka, Yoshiki Sawa
OBJECTIVES: Although right ventricular failure (RVF) is a major concern after left ventricular assist device (LVAD) implantation, methodologies to evaluate RV function remain limited. Liver stiffness (LS), which is closely related to right-sided filling pressure and may indicate RVF severity, could be non-invasively and repeatedly assessed using transient elastography. Here we investigated the suitability of LS as a parameter of RV function in pre- and post-LVAD periods. METHODS: The study included 55 patients with LVAD implantation as a bridge to transplantation between 2011 and 2015 whose LS was assessed using transient elastography...
April 1, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28379854/clinical-usefulness-of-controlled-attenuation-parameter-to-screen-hepatic-steatosis-for-potential-donor-of-living-donor-liver-transplant
#17
Young Mi Hong, Ki Tae Yoon, Mong Cho, Chong Woo Chu, Je Ho Rhu, Kwang Ho Yang, Jun Woo Lee
OBJECTIVE: Hepatic steatosis is associated with an increased risk of graft loss. Although the controlled attenuation parameter (CAP), a process based on transient elastography, has been suggested as a noninvasive method of assessing hepatic steatosis, to date, there is no study on the usefulness of CAP as a single screening tool for detecting hepatic steatosis in potential living donor liver. We evaluated the accuracy of CAP for detecting hepatic steatosis in potential liver donors. PATIENTS AND METHODS: All potential donors of living-donor liver transplantation who underwent a CAP assessment and ultrasonography-guided liver biopsy were enrolled...
April 4, 2017: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28376580/a-survey-of-hepatitis-c-management-by-victorian-gps-after-pbs-listing-of-direct-acting-antiviral-therapy
#18
Amanda Wade, Bridget Draper, Joseph Doyle, Nicole Allard, Paul Grinzi, Alexander Thompson, Margaret Hellard
BACKGROUND: To increase access to hepatitis C virus (HCV) treatment, the Pharmaceutical Benefits Scheme (PBS) enabled general practitioners (GPs) to prescribe direct-acting antiviral (DAA) therapy. We conducted a survey to identify GPs' knowledge and management of HCV. METHODS: A questionnaire consisting of 20 items about HCV knowledge and management was sent to 1000 GPs. RESULTS: One hundred and ninety-one GPs (19.1%) responded; 74% answered correctly that antibody and RNA positivity is diagnostic of HCV...
2017: Australian Family Physician
https://www.readbyqxmd.com/read/28376292/hepatitis-b-virus-sequencing-and-liver-fibrosis-evaluation-in-hiv-hbv-co-infected-nigerians
#19
Jennifer Grant, Oche Agbaji, Anna Kramvis, Mukhlid Yousif, Mu'azu Auwal, Sudhir Penugonda, Placid Ugoagwu, Robert Murphy, Claudia Hawkins
OBJECTIVES: Molecular characteristics of hepatitis B virus (HBV), such as genotype and genomic mutations, may contribute to liver-related morbidity and mortality. The association of these characteristics with liver fibrosis severity in sub-Saharan Africa is uncertain. We aimed to characterize molecular HBV features in HIV/HBV co-infected Nigerians and evaluate associations between these characteristics and liver fibrosis severity before and after antiretroviral therapy (ART) initiation...
April 4, 2017: Tropical Medicine & International Health: TM & IH
https://www.readbyqxmd.com/read/28376114/high-risk-of-misinterpreting-liver-and-spleen-stiffness-using-2d-shear-wave-and-transient-elastography-after-a-moderate-or-high-calorie-meal
#20
Maria Kjærgaard, Maja Thiele, Christian Jansen, Bjørn Stæhr Madsen, Jan Görtzen, Christian Strassburg, Jonel Trebicka, Aleksander Krag
Food intake increases liver stiffness, but it is believed that liver stiffness returns to baseline two hours after a meal. The aim of this study was to investigate the impact of different sized meals on liver stiffness. Liver and spleen stiffness was measured with transient elastography (TE) and real-time 2-dimensional shear wave elastography (2D-SWE). Patients ingested a 625 kcal and a 1250 kcal liquid meal on two consecutive days. We measured liver and spleen elasticity, Controlled attenuation parameter (CAP) and portal flow at baseline and after 20, 40, 60, 120 and 180 minutes...
2017: PloS One
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