Figure 3b. MR images in a 40-year-old man with a diffuse nodular pattern of liver cirrhosis. Multiple regenerative nodules smaller than 3 cm are seen in the entire liver, resulting in a nodular liver contour. Fibrous tissue between the nodules forms a reticular pattern that shows high signal intensity on (a) a transverse short inversion time inversion-recovery MR image (5,110/76/170) and low signal intensity on (b) a transverse T1-weighted SGE MR image (140/4.1). (c) Some strands of fibrous tissue (arrows) show enhancement on a transverse SGE MR image (140/4.1) obtained immediately after gadolinium chelate administration. (d) On a transverse fat-suppressed SGE MR image (147/4.1) obtained 2 minutes after gadolinium chelate administration, progressive enhancement of fibrous tissue, revealing a high-signal-intensity reticular patchwork, is seen. This patient’s spleen (S) is enlarged, and perihepatic ascites (A) appears with high signal intensity in a (a T2-weighted MR image) and low signal intensity in b-d (T1-weighted MR images).