| 摘要: |
| ［摘要］ 目的 探讨头颈CT血管成像（CTA）对椎动脉先天变异的诊断价值。方法 回顾性分析50例经16排CTA诊断为椎动脉变异患者的影像学资料，将原始图像采用容积重建（VR）、最大密度投影（MIP）、多平面重建（MPR）、曲面重建（CPR）等方法重建，观察椎基底动脉变异的起源、行径、管径异常、开窗畸形及远端吻合情况，综合评估椎动脉的变异。结果 50例椎动脉变异中，椎动脉发育不良26例（右椎动脉发育不良20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14例(左椎动脉起源于主动脉弓12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)；椎动脉窗式变异5例；椎动脉远端吻合异常2例。结论 头颈CTA能快速、立体、准确显示椎动脉变异情况，是无创诊断椎动脉变异的优良方法。 |
| 关键词: 椎动脉 变异 X线计算机体层摄影术 |
| DOI：10.3969/j.issn.1674-3806.2017.09.21 |
| 分类号:R 445 |
| 基金项目: |
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| The diagnostic value of CTA for vertebral artery variations |
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ZHU Zheng-qun, WU Lei
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Department of Radiology, the First People′s Hospital of Funing County, Jiangsu 224400, China
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| Abstract: |
| ［Abstract］ Objective To assess the value of computed tomography angiography(CTA) in the diagnosis of vertebral artery(VA) variations.Methods The imaging data of fifty patients with VA variations diagnosed by CTA were retrospectively analyzed, and were reconstructed by the methods of VR, MIP, MPR and CPR. The number, origin, form, course of VA and its relationship with adjacent structures were observed to evaluate the variations of VA comprehensively.Results In the fifty patients, VA variations were hypoplastic right VA in 20 cases, hypoplastic left VA in 5 cases, hypoplastic bilateral VA in 1 case, origin variation of the left VA from the aortic arch in 12 cases, origin variation of the left VA from the left common carotid artery in 1 case, origin variation of the right VA from the right common carotid artery in 1 case, the aberrant entrance position into the transverse foramen of the right VA in 1 case, the aberrant entrance position into the transverse foramen of the left VA in 2 cases, VA fenestration in 5 cases, and the basilar artery formed by unilateral vertebral artery in 2 cases.Conclusion CTA is a useful noninvasive imaging tool for the diagnosis of VA variations. |
| Key words: Vertebral artery(VA) Variation X-ray computed tomography |
