OBJECTIVETo investigate the demonstration ability of 64-multislice spiral computed tomography angiography (MSCTA) with 3-D reconstruction image fusion for the anatomy of perigastric artery.

METHODSFrom November 2012 to December 2013 in the Nanfang Hospital, a total of 469 patients underwent abdominal 64-MSCTA. 3-D reconstruction technique computed tomography angiography (CTA) was used to reconstruct perigastric arteries. The origin and the course of perigastric arteries were observed. Branching pattern of the hepatic artery was classified by Michels standard, and branching pattern of the right gastric artery was classified into three types according to RGA ramification patterns.

RESULTSFive patients failed to demonstrate hepatic artery because of abnormal development. 3-D reconstruction clearly showed the perigastric arteries in other 464 patients (98.9%). The most common branching pattern of hepatic artery was Michels type I in 346 patients (74.6%). Hepatic artery variation was found in 118 patients (25.4%), including 9 patients of non-Micles type (7.6%). 3-D reconstruction clearly showed the branching pattern of the right gastric artery in 337 patients (72.6%), including 54(16.0%) of proximal pattern, 221 of distal pattern(65.6%), 56 of caudal pattern (16.6%), and 6 of other pattern (3 from splenic artery, 3 from superior mesenteric artery).

CONCLUSION64-MSCTA with 3-D reconstruction can clearly reveal individual perigastric arteries, and can provide guidance for laparoscopic gastrectomy.