Focal liver lesions: Practical magnetic resonance imaging approach

Figure 5 Multiple biliary hamartomas (also known as von Meyenburg complex). In- (A) and opposed-phase (B) GRE T1-WI, fat-suppressed FSE T2-WI (C), pre (D) and postcontrast fat-suppressed 3D-GRE T1-WI at the arterial (E), portal venous (F) and interstitial (G) phases. There are multiple well-defined lesions scattered throughout the liver, smaller than 1.5 cm each. The lesions show low signal intensity on T1-WI (A, B and D), high signal intensity on T2-WI (C) and no enhancement after gadolinium administration (E-G). A thin peripheral enhancement is often present due to compressed liver parenchyma. GRE: Gradient-echo; FSE: Fast spinecho; T1-WI: T1-weighted images.