Purpose The purpose of this research is an assessment of whether the noninvasive method of computed tomography angiography of liver preoperatively before liver transplantation does provide sufficient details for the surgeons. At the same time, by comparing the images reconstructed from scanners equipped with and without 64 slices, we can appreciate the limits of each scanner and set up an acceptable standard for each scanner. Methods In a retrospective study from May, 2005 to March, 2007, 52 patients receiving liver transplantation underwent 104 computed tomography studies for evaluation of intra-hepatic arterial anatomy provided by the radiology department in a southern medical center. The reconstructed CT angiograms were compared to see if they were compatible to the conventional digital subtracted angiograms for the demonstration of the anatomy details. The CT images exported from different mutislice count scanner¡]MSCT¡^were reevaluated for the limits and variance of the quality. Results Multi-slices CT with its obvious advantage of the faster speed and thinner scan slices, can distinguish 100¢M(104/104) of the 3rd grade of arteries of liver (segmental branches ), 61.5¢M(64/104) for 4th grade of arteries (sub-segmental branches ), 100¢M (104/104) of the portal vein and 93¢M(97/104) of hepatic vein. The images of the 52 patients provide sufficient quality of intra-hepatic arterial details for liver transplantation.