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  • 1
    Publikationsdatum: 2012-05-08
    Beschreibung: Purpose: To evaluate intrinsic hepatic enhancement patterns on multiphase, gadolinium-enhanced, fat-suppressed, 3D T1-weighted, gradient echo magnetic resonance imaging (MRI) as a quantitative correlate for severity of pathological changes in chronic liver disease (CLD). Materials and Methods: This study was HIPAA-compliant and Institutional Review Board-approved. In all, 75 patients were studied by contrast-enhanced multiphase abdominal MRI. CLD patients had liver histology correlation derived from right lobe liver biopsies. Contrast-enhanced arterial- and delayed-phase 3D gradient recalled echo (GRE) liver MRI were scored using feature categorization templates to quantify enhancement patterns by three independent readers. Liver histopathology was staged/graded for fibrosis/inflammation using the Scheuer system. Statistical testing for MRI histology correlates used a Pearson's product moment correlation and a Wilcoxon–Mann–Whitney two-sample rank-sum test. Reader agreement was analyzed by a modified Fleiss' kappa test. Results: MRI histology correlation was high for delayed-phase MRI versus fibrosis stage (95% confidence interval [CI] 0.941 〈 r 〈 0.976, P = 5 × 10 −7 ), but lower for all other comparisons (delayed-phase vs. inflammation and arterial-phase vs. inflammation or fibrosis all showed a CI no greater than 0.64). Paired testing between delayed-phase MRI score and histology fibrosis staging incremental levels was significant (from P 〈 10 −2 to P 〈 10 −5 ). Conclusion: A standard gadolinium-enhanced liver MRI may provide a correlate measure of hepatic fibrosis over a spectrum of severity. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals, Inc.
    Print ISSN: 1053-1807
    Digitale ISSN: 1522-2586
    Thema: Medizin
    Publiziert von Wiley-Blackwell
    Standort Signatur Einschränkungen Verfügbarkeit
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