Right hepatic arterial supply to the posterior aspect of segment IV of the liver: analysis by CT during hepatic arteriography

Abdominal Imaging
K KobayashiT Takashima


To examine the frequency of the right hepatic arterial supply to the posterior aspect of segment IV (PASIV) of the liver shown on computed tomography (CT) during hepatic arteriography (CTHA). Seventy-four patients who underwent CTHA from the right and/or left hepatic artery were studied. The right arterial supply to the PASIV was determined when the PASIV was stained on CT during right hepatic arteriography without any opacified arteries originating from the right hepatic artery and distributing to segment IV through the left hepatic hilum or when no staining was seen in the PASIV on CT during left hepatic arteriography. The frequency of the right hepatic arterial supply to the PASIV demonstrated on CTHA was analyzed. In six of 74 patients (8%), the PASIV was supplied from the right hepatic artery. This PASIV was supplied by the right hepatic artery in a significant proportion of cases.


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