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01.03.2011 | Original Article—Liver, Pancreas, and Biliary Tract

Real-time tissue elastography as a tool for the noninvasive assessment of liver stiffness in patients with chronic hepatitis C

verfasst von: Hiroyasu Morikawa, Katsuhiko Fukuda, Sawako Kobayashi, Hideki Fujii, Shuji Iwai, Masaru Enomoto, Akihiro Tamori, Hiroki Sakaguchi, Norifumi Kawada

Erschienen in: Journal of Gastroenterology | Ausgabe 3/2011

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Abstract

Background

Although histopathological examination by “invasive” liver biopsy remains the gold standard for evaluating disease progression in chronic liver disease, noninvasive tools have appeared and have led to great progress in diagnosing the stage of hepatic fibrosis. The aim of this study was to assess the value of real-time tissue elastography, using an instrument made in Japan, for the visible measurement of liver elasticity; in particular, comparing the results with those of transient elastography (Fibroscan).

Methods

Real-time tissue elastography (RTE), transient elastography (Fibroscan), liver biopsy, and routine laboratory analyses were performed in 101 patients with chronic hepatitis C. The values for tissue elasticity obtained using novel software (Elasto_ver 1.5.1) connected to RTE were transferred to four image features, Mean, Standard Deviation (SD), Area, and Complexity. Their association with the stage of fibrosis at biopsy and with liver stiffness (kPa) obtained by Fibroscan was analyzed.

Results

Colored images obtained by RTE were classified into diffuse soft, intermediate, and patchy hard patterns and the calculated elasticity differed significantly between patients according to and correlated with the stages of fibrosis (p < 0.0001). Mean, SD, Area, and Complexity showed significant differences between the stages of fibrosis (Tukey–Kramer test, p < 0.05). In discriminating patients with cirrhosis, the areas under the receiver operating characteristic curves (AUC) were 0.91 for Mean, 0.84 for SD, 0.91 for Area, 0.93 for Complexity, and 0.95 for Fibroscan.

Conclusions

RTE is a noninvasive instrument for the colored visualization of liver elasticity in patients with chronic liver disease.

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Titel: Real-time tissue elastography as a tool for the noninvasive assessment of liver stiffness in patients with chronic hepatitis C
verfasst von: Hiroyasu Morikawa
Katsuhiko Fukuda
Sawako Kobayashi
Hideki Fujii
Shuji Iwai
Masaru Enomoto
Akihiro Tamori
Hiroki Sakaguchi
Norifumi Kawada
Publikationsdatum: 01.03.2011
Verlag: Springer Japan
Erschienen in: Journal of Gastroenterology / Ausgabe 3/2011
Print ISSN: 0944-1174
Elektronische ISSN: 1435-5922
DOI: https://doi.org/10.1007/s00535-010-0301-x

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Real-time tissue elastography as a tool for the noninvasive assessment of liver stiffness in patients with chronic hepatitis C

Abstract

Background

Methods

Results

Conclusions

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