多层螺旋CT诊断椎动脉变异的价值

目的:探讨多层螺旋CT(MSCT)在椎动脉变异诊断中的价值。方法:MSCT诊断椎动脉变异46例,回顾性分析椎动脉变异的CT表现。结果:46例椎动脉变异中,椎动脉发育不良24例(右椎动脉发育不良18例,左椎动脉发育不良5例,左、右椎动脉发育不良1例);椎动脉起源异常13例(左椎动脉起源于主动脉弓11例,左椎动脉起源于左颈总动脉1例,右椎动脉起源于右颈总动脉1例);椎动脉行径异常3例(右椎动脉行径异常1例,左椎动脉行径异常2例);单侧双支椎动脉变异2例(均为右侧双支椎动脉);窗式椎动脉变异4例。结论:MSCT是无创诊断椎动脉变异的优良方法。

Application of Multislice Spiral CT in the Diagnosis of Anomalous Vertebral Artery

Objective:To assess the value of multislice spiral computed tomography (MSCT) in the diagnosis of anomalous vertebral artery (VA).Methods:Forty-six patients with anomalous VA diagnosed by MSCT were retrospectively analyzed.Results:Forty-six patients with anomalous VA were identified,including hypoplastic right VA (n=18),hypoplastic left VA (n=5),hypoplastic bilateral VA (n=1),anomalous origin of the left VA from the aortic arch (n=11),anomalous origin of the left VA from the left common carotid artery (n=1),anomalous origin of the right VA from the right common carotid artery (n=1),the aberrant entrance position into the transverse foramen of the right VA (n=1),the aberrant entrance position into the transverse foramen of the left VA (n=2),double right VA branches (n=2),VA fenestration (n=4).The signs of anomalous VA were showed by MSCT VA angiography.Conclusion:MSCT is a useful noninvasive imaging tool for the diagnosis of VA variations.