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Fig. 2A —73-year-old woman with pancreatic adenocarcinoma. Volume renderings of arterial dominant phase of imaging show accessory hepatic artery (arrowhead) arising from superior mesenteric artery. Artery is not color encoded because it does not cross through surgical plane, although documenting its presence for surgeon is important. A superior pancreaticoduodenal artery has aberrant origin from this vessel, and its long course is in surgical plane (arrows). Because it crosses surgical plane, this aberrant superior pancreaticoduodenal artery is removed during workstation simulation of Whipple procedure and is color encoded in volume-rendered CT angiogram. Biliary stent (asterik, B) is in place and is also color encoded as it crosses surgical plane.