多层螺旋CT血管成像对椎动脉变异的临床诊断价值

Diagnosis and clinical application of multi-slice spiral CT angiography in anomalous vertebral artery

目的探讨应用多层螺旋CT血管成像(MSCTA)技术对椎动脉变异进行分型的方法及其临床意义。方法回顾性分析经MSCTA诊断的椎动脉变异66例。结果单纯椎动脉起源变异3例,单纯椎动脉行径变异14例(16条),起源变异合并行径变异29例(34条),单侧椎动脉双分支2例,椎动脉窗式变异11例,单干椎动脉形成基底动脉(一侧椎动脉未汇合入基底动脉)7例。变异椎动脉与无变异椎动脉粥样硬化的发生率无显著性差异(χ2=2.735,P=0.098)。结论作为一种无创性的影像学检查方法,MSCTA在椎动脉变异的临床诊断中具有较高的应用价值。

Objective To study anomalous types of vertebral artery examined by multi-slice spiral computed tomography angiography（MSCTA） and its clinical significance. Methods MSCTA data from 66 patients with anomalous vertebral artery were retrospectively analyzed. Results Three cases had simple origin variation. Fourteen cases （16 branches） had simple course variation （bended into the C5, C4 foramen transversarium）. Both origin and course variations of vertebral artery were seen in 29 cases （34 branches）. Two cases had unilateral vertebral artery with double branches. Eleven cases had vertebral arterial fenestration. There were 7 cases of basilar artery formed by unilateral vertebral artery. There was no statistic significance in atherosclerosis between the variation group and the control group（Х^2 = 2. 735, P = 0. 098）. Conclusion MSCTA is a valuable noninvasive imaging method for the diagnosis of vertebral artery variation, and it has great significance for surgery and interventional therapy of cerebral vessels.