Figure 4b. MR images in a 35-year-old woman with a peripheral wedge-shaped area of parenchymal atrophy. Large nodules (straight arrows) in the central area of the liver show low signal intensity on (a) a transverse fat-suppressed T2-weighted half-Fourier RARE MR image (
/90) and isointense signal on (b) a transverse T1-weighted SGE MR image (140/4.1). A peripheral wedge-shaped area of parenchymal atrophy (curved arrows) in the left lobe of the liver shows high signal intensity in a, low signal intensity in b, and some heterogeneity. (c) Hyperenhancement (arrows) is revealed on a transverse MR image (140/4.1) obtained immediately after gadolinium chelate administration. A small central area of fibrosis is spared. (d) On a transverse fat-suppressed MR image (147/4.1) obtained 2 minutes after gadolinium chelate administration, the central large nodules are minimally hypoenhancing and the rest of the liver is isoenhancing. Dilated bile ducts (arrowheads) in the periphery of the liver are best visualized on this image.