Focal liver lesions: Practical magnetic resonance imaging approach

Figure 13 Adenomatosis. In- (A) and opposed-phase (B) GRE T1-WI, fat-suppressed FSE T2-WI (C), pre (D) and post hepatocyte-specific contrast agent (Eovist^®) fat-suppressed 3D-GRE T1-WI at the arterial (E), portal venous (F), interstitial (G) and hepatobiliary (H) phases. There are multiple lesions (> 10 in number) scattered throughout the hepatic parenchyma, barely visible on unenhanced T1-WI (A, B and D) and hyperintense on T2-WI (C). The lesions show arterial enhancement (E), which fades to almost isointensity on the delayed post-contrast images (F and G). On the hepatobiliary phase, acquired 20 min after the hepatocyte-specific contrast agent, all lesions appear with low signal intensity comparing to the surrounding liver. GRE: Gradient-echo; FSE: Fast spinecho; T1-WI: T1-weighted images.