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01.03.2016 | Hepatobiliary-Pancreas

MR elastography of the liver at 3.0 T in diagnosing liver fibrosis grades; preliminary clinical experience

verfasst von: Kengo Yoshimitsu, Toshimichi Mitsufuji, Yoshinobu Shinagawa, Ritsuko Fujimitsu, Ayako Morita, Hiroshi Urakawa, Hiroyuki Hayashi, Koichi Takano

Erschienen in: European Radiology | Ausgabe 3/2016

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Abstract

Objectives

To clarify the usefulness of 3.0-T MR elastography (MRE) in diagnosing the histological grades of liver fibrosis using preliminary clinical data.

Materials and methods

Between November 2012 and March 2014, MRE was applied to all patients who underwent liver MR study at a 3.0-T clinical unit. Among them, those who had pathological evaluation of liver tissue within 3 months from MR examinations were retrospectively recruited, and the liver stiffness measured by MRE was correlated with histological results. Institutional review board approved this study, waiving informed consent.

Results

There were 70 patients who met the inclusion criteria. Liver stiffness showed significant correlation with the pathological grades of liver fibrosis (rho = 0.89, p < 0.0001, Spearman’s rank correlation). Areas under the receiver operating characteristic curve were 0.93, 0.95, 0.99 and 0.95 for fibrosis score greater than or equal to F1, F2, F3 and F4, with cut-off values of 3.13, 3.85, 4.28 and 5.38 kPa, respectively. Multivariate analysis suggested that grades of necroinflammation also affected liver stiffness, but to a significantly lesser degree as compared to fibrosis.

Conclusions

3.0-T clinical MRE was suggested to be sufficiently useful in assessing the grades of liver fibrosis.

Key Points

• MR elastography may help clinicians assess patients with chronic liver diseases

• Usefulness of 3.0-T MR elastography has rarely been reported

• Measured liver stiffness correlated well with the histological grades of liver fibrosis

• Measured liver stiffness was also affected by necroinflammation, but to a lesser degree

• 3.0-T MRE could be a non-invasive alternative to liver biopsy

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Titel: MR elastography of the liver at 3.0 T in diagnosing liver fibrosis grades; preliminary clinical experience
verfasst von: Kengo Yoshimitsu
Toshimichi Mitsufuji
Yoshinobu Shinagawa
Ritsuko Fujimitsu
Ayako Morita
Hiroshi Urakawa
Hiroyuki Hayashi
Koichi Takano
Publikationsdatum: 01.03.2016
Verlag: Springer Berlin Heidelberg
Erschienen in: European Radiology / Ausgabe 3/2016
Print ISSN: 0938-7994
Elektronische ISSN: 1432-1084
DOI: https://doi.org/10.1007/s00330-015-3863-4

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MR elastography of the liver at 3.0 T in diagnosing liver fibrosis grades; preliminary clinical experience