Fig. 9. Examples of MR TCT measured in three patients with or without biliary atresia, with histologic grades of hepatic fibrosis derived from intraoperative or percutaneous biopsy.

A. MR-TCT (double arrow) in a 12-week-old boy diagnosed with non-syndromic paucity of intrahepatic bile duct measures 3.1 mm on the sagittal T2-weighted image, and the fibrosis grade was 0.

B. MR-TCT (double arrow) in a 9-week-old boy diagnosed with biliary atresia measures 5.3 mm on the axial T2-weighted image, and the fibrosis grade was 2.

C. MR-TCT (double arrow) in a 4-month-old girl diagnosed with biliary atresia measures 9.2 mm on the axial T2-weighted image, and the fibrosis grade was 4.

TCT = triangular cord thickness