Updates on Quantitative MRI of Diffuse Liver Disease: A Narrative Review

Figure 4

MRE images of a 38-year old female patient with NAFLD. (a) axial single-shot spin echo T2-weighted image shows the severe liver tissue alterations. (b) shows axial GRE T1-weighted fat-saturated image after contrast medium administration (gatoxetic acid), during hepatobiliary phase. (c) Axial GRE MRE image where it is possible to appreciate the propagation effect generate from the passive pneumatic driver (arrowheads). (d) Magnitude image. (e) Color elastogram with 95% confidence map. Free hand manual ROI is drawn on liver parenchyma on a large area of the liver that is not covered by the 95% confidence map shows an average , corresponding to a stage 4 fibrosis. (f) Axial wave image showing thick and irregular waves expression of hepatic fibrosis. MRE: magnetic resonance elastography; NAFLD: nonalcoholic fatty liver disease; GRE: gradient echo; ROI: region of interest.

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