Figure 6. Visualization of biliary anatomy.
In this patient with suspected gallstone pancreatitis, the posterior right intrahepatic bile duct (white arrowhead) drains anomalously into the common hepatic duct (*) at the expected location of the cystic duct. The cystic duct itself (black arrowhead) demonstrates a very low insertion to the common hepatic duct in the pancreatic head. This anatomy was more easily appreciated on the navigated 3D-SPGR acquisition than on T2-weighted MRCP. Contrast filled the gallbladder on 45-min delayed imaging, demonstrating that there was no functional obstruction in the cystic duct and therefore no evidence of cholecystitis.