MRI Extracellular Volume Fraction in Liver Fibrosis-A Comparison of Different Time Points and Blood Pool Measurements.

Autor: Obmann VC; Department of Diagnostic, Interventional and Pediatric Radiology, Inselspital Bern, University Hospital, University of Bern, Bern, Switzerland.; Liver Elastography Center, Translational Imaging Center (TIC), Swiss Institute for Translational and Entrepreneurial Medicine, Bern, Switzerland., Ardoino M; Department of Diagnostic, Interventional and Pediatric Radiology, Inselspital Bern, University Hospital, University of Bern, Bern, Switzerland., Klaus J; Department of Diagnostic, Interventional and Pediatric Radiology, Inselspital Bern, University Hospital, University of Bern, Bern, Switzerland.; Institute of Forensic Medicine, University of Bern, Bern, Switzerland., Catucci D; Department of Diagnostic, Interventional and Pediatric Radiology, Inselspital Bern, University Hospital, University of Bern, Bern, Switzerland.; Graduate School for Health Sciences, University of Bern, Bern, Switzerland., Berzigotti A; Department of Visceral Surgery and Medicine, Inselspital Bern University Hospital, University of Bern, Bern, Switzerland., Montani M; Department of Pathology, University of Bern, Bern, Switzerland., Peters A; Department of Diagnostic, Interventional and Pediatric Radiology, Inselspital Bern, University Hospital, University of Bern, Bern, Switzerland., Todorski I; Department of Diagnostic, Interventional and Pediatric Radiology, Inselspital Bern, University Hospital, University of Bern, Bern, Switzerland., Wagner B; Department of Diagnostic, Interventional and Pediatric Radiology, Inselspital Bern, University Hospital, University of Bern, Bern, Switzerland., Zbinden L; Department of Diagnostic, Interventional and Pediatric Radiology, Inselspital Bern, University Hospital, University of Bern, Bern, Switzerland.; ARTORG Center for Biomedical Engineering Research, University of Bern, Bern, Switzerland., Gräni C; Department of Cardiology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland., Ebner L; Department of Diagnostic, Interventional and Pediatric Radiology, Inselspital Bern, University Hospital, University of Bern, Bern, Switzerland.; Radiology and Nuclear Medicine (RUN), Luzerner Kantonsspital, University of Lucerne, Switzerland, Lucerne, Switzerland., Heverhagen JT; Department of Diagnostic, Interventional and Pediatric Radiology, Inselspital Bern, University Hospital, University of Bern, Bern, Switzerland., Christe A; Department of Diagnostic, Interventional and Pediatric Radiology, Inselspital Bern, University Hospital, University of Bern, Bern, Switzerland.; Liver Elastography Center, Translational Imaging Center (TIC), Swiss Institute for Translational and Entrepreneurial Medicine, Bern, Switzerland., Huber AT; Department of Diagnostic, Interventional and Pediatric Radiology, Inselspital Bern, University Hospital, University of Bern, Bern, Switzerland.; Liver Elastography Center, Translational Imaging Center (TIC), Swiss Institute for Translational and Entrepreneurial Medicine, Bern, Switzerland.; Radiology and Nuclear Medicine (RUN), Luzerner Kantonsspital, University of Lucerne, Switzerland, Lucerne, Switzerland.
Jazyk: angličtina
Zdroj: Journal of magnetic resonance imaging : JMRI [J Magn Reson Imaging] 2024 Oct; Vol. 60 (4), pp. 1678-1688. Date of Electronic Publication: 2024 Mar 29.
DOI: 10.1002/jmri.29259
Abstrakt: Background: Extracellular volume (ECV) correlates with the degree of liver fibrosis.
Purpose: To analyze the performance of liver MRI-based ECV evaluations with different blood pool measurements at different time points.
Study Type: Prospective.
Sample: 73 consecutive patients (n = 31 females, mean age 56 years) with histopathology-proven liver fibrosis.
Field Strength/sequence: 3T acquisition within 90 days of biopsy, including shortened modified look-locker inversion recovery T1 mapping.
Assessment: Polygonal regions of interest were manually drawn in the liver, aorta, vena cava, and in the main, left and right portal vein on four slices before and after Gd-DOTA administration at 5/10/15 minutes. ECV was calculated 1) on one single slice on portal bifurcation level, and 2) averaged over all four slices.
Statistical Tests: Parameters were compared between patients with fibrosis grades F0-2 and F3-F4 with the Mann-Whitney U and fishers exact test. ROC analysis was used to assess the performance of the parameters to predict F3-4 fibrosis. A P-value <0.05 was considered statistically significant.
Results: ECV was significantly higher in F3-4 fibrosis (35.4% [33.1%-37.6%], 36.1% [34.2%-37.5%], and 37.0% [34.8%-39.2%] at 5/10/15 minutes) than in patients with F0-2 fibrosis (33.3% [30.8%-34.8%], 33.7% [31.6%-34.7%] and 34.9% [32.2%-36.0%]; AUC = 0.72-0.75). Blood pool T1 relaxation times in the aorta and vena cava were longer on the upper vs. lower slices at 5 minutes, but not at 10/15 minutes. AUC values were similar when measured on a single slice (AUC = 0.69-0.72) or based on blood pool measurements in the cava or portal vein (AUC = 0.63-0.67 and AUC = 0.65-0.70).
Data Conclusion: Liver ECV is significantly higher in F3-4 fibrosis compared to F0-2 fibrosis with blood pool measurements performed in the aorta, inferior vena cava, and portal vein at 5, 10, and 15 minutes. However, a smaller variability was observed for blood pool measurements between slices at 15 minutes.
Level of Evidence: 1 TECHNICAL EFFICACY: Stage 3.
(© 2024 The Authors. Journal of Magnetic Resonance Imaging published by Wiley Periodicals LLC on behalf of International Society for Magnetic Resonance in Medicine.)
Databáze: MEDLINE
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