The anatomical description of reconstructed three-dimensional images of hepatic CT scans (Three-dimensional computed tomographic volume rendering images) has a high percentage of unexplained anatomical variations, so that they do not definitively orient the radiologist and the surgeon. This study allows to observe and to describe the segmental branches of the Hepatic portal vein (A12.3.12.001), its relation with the hepatic veins (A12.3.09.005) and its parenchymal distribution. The study is descriptive and we used percentage expressions to describe the frequency of anatomical characteristics. For this we randomly took 56 three-dimensional reconstructions of liver CTs from adult patients. Portal segmental branches+ and hepatic veins were always identified; we found seven portal segmental branches in all cases. In addition, the segmental por- tal branch V (five)+ originated from the right portal (A12.3.12.002) in 75 % of cases and from the left (A12.3.12.005) in 21.4 %.

KEY WORDS: Reconstructed tomographic images; Liver; Portal segmentation.