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Fig. 4B —Variation in origin of common hepatic artery. Common hepatic artery originates directly from aorta in 68-year-old woman who also has trifurcation of common hepatic artery. Volume-rendered 3D image created from axial contrast-enhanced CT data reveals common hepatic artery (small open arrow) originates directly from abdominal aorta. Common hepatic artery trifurcates into right hepatic artery (large solid arrow), left hepatic artery (small solid arrow), and gastroduodenal artery (large open arrow).