主动脉弓分支变异的MRA解剖学分析及其临床意义

目的:应用磁共振血管成像(MRA)分析主动脉弓分支变异的解剖学特征,探讨MRA评价主动脉弓分支变异的临床意义。方法:对1300例在我院磁共振室接受主动脉弓及其以上MRA检查的患者进行回顾性分析,分析不同类型主动脉弓分支变异的发生情况,并讨论主动脉弓分支变异的临床意义。结果:1300例患者中,形态正常者1207例(92.85%),即头臂干(BT)、左颈总动脉(LCCA)、左锁骨下动脉(LSA)从右向左分别发自主动脉弓,存在变异者93例(7.15%)。共发现9种不同类型的变异,包括LCCA与BT共干发自主动脉弓43例(3.31%),左椎动脉(LVA)于LCCA和LSA之间直接发自主动脉弓28例(2.15%),右颈总动脉(RCCA)直接发自主动脉弓伴迷走右锁骨下动脉(RSA)7例(0.54%),LCCA与RCCA共干发自主动脉弓伴迷走RSA 3例(0.23%),LCCA与BT共干,伴LVA直接发自主动脉弓5例(0.38%),LVA与LSA共干发自主动脉弓3例(0.23%),RCCA发自主动脉弓,右椎动脉(RVA)发自RCCA伴迷走RSA 2例(0.15%),LCCA,RCCA,LVA,RSA均发自主动脉弓1例(0.08%),LCCA与BT共干发自主动脉弓,LVA缺如,伴原始三叉动脉1例(0.08%)。结论:主动脉弓分支变异种类繁多,MRA能很好的评价主动脉弓分支数量及其形态与开口位置,对临床有重要意义。

Anatomical study of aortic arch branches' variations with MRA and its significance

Objective:To evaluate the anatomical features of human aortic arch branch variations using magnetic resonance angiography(MRA) and its clinical significance.Methods:1300 patients who received aortic arch MRA were analyzed retrospectively.The aortic arch branch variations were summarized and the clinical significance was researched.Results:In 1300 cases,1207 of them(92.85%),which was a normal form,the brachiocephalic trunk(BT),left common carotid artery(LCCA) and left subclavian artery(LSA) originated separa...