MSCT angiography in observation on anatomical variations of coeliac trunk and superior mesenteric artery

Objective To observe the anatomical variations of coeliac trunk and superior mesenteric artery with MSCTA.Methods One thousand patients who underwent enhanced CT scanning and CTA were selected.VR,MIP and MPR were used to observe the origin and course of coeliac trunk,superior mesenteric artery(SMA) and their branches.Results Of 1000 patients,880(88.00%) had normal anatomical configuration(Michels type I),while 120 cases(12.00%) were found with various types of anatomical variations.In these variations,72(7.20%) were belonging to the classic Michels type Ⅱ—Ⅹ,the remaining 48 cases(4.8%) were not,including celiomesenteric trunk in 31 cases(3.10%),splenic artery originated from SMA in 5(0.50%),gastroduodenal artery originated from SMA and splenic artery in 3 cases(0.30%),respectively,and originated from left hepatic artery in 1 case(0.10%),absence of the celiac trunk in 2(0.20%),left gastric artery originated from abdominal aorta,splenic artery and proper hepatic artery in 1 case(0.10%),respectively.Conclusion Widespread anatomical variations of celiac trunk and SMA may exist.MSCTA can contribute to understand the details of these variations and guide treatment plan for abdominal vascular surgery.