Fig. 3

Coronal maximum intensity projection (MIP) and three-dimensional reconstruction images based on preoperative contrast-enhanced CT. A MIP image shows that the rRHA arose from the GDA, entered into the right liver lobe; MHA was derived from the CHA, and rLHA was branched from the LGA. B Three-dimensional reconstruction shows the spatial anatomical relationship of the liver, artery, and CBD; the rRHA traversed anterior to the CBD and supplied right liver lobe; the MHA extended to porta hepatis was erroneously identified as PHA intraoperatively, which entered the liver substance at the fissure between the right and left lobes, and actually supplied hepatic segment IV. rRHA replaced right hepatic artery, rLHA replaced left hepatic artery, MHA middle hepatic artery, GDA gastroduodenal artery, LGA left gastric artery, SA splenic artery, PDA pancreaticoduodenal artery, CHA common hepatic artery, SMA superior mesenteric artery, CBD common bile duct, AA abdominal aorta, IVC inferior vena cava, CT celiac trunk