| 叶莹莹,张伟国,陈蓉,陈金华,李雪.64层螺旋CTA显示胚胎型大脑后动脉伴发Willis环多血管段变异的价值[J].中国医学影像技术,2007,23(12):1773~1776 |
| 64层螺旋CTA显示胚胎型大脑后动脉伴发Willis环多血管段变异的价值 |
| Fetal origin of the posterior cerebral artery: variation of multi-segments of the circle of Willis demonstrated with 64-slice spiral CT angiography |
| 投稿时间：2007-08-09 修订日期：2007-09-24 |
| DOI： |
| 中文关键词: 体层摄影术, X线计算机 Willis环 血管成像 变异 |
| 英文关键词:Tomography, X-ray computed Circle of Willis Angiography Variations |
| 基金项目:本课题受重庆市自然科学基金资助(2004BB5030)。 |
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| 中文摘要: |
| 目的 探讨64层螺旋CT血管成像(CTA) 显示胚胎型大脑后动脉(FTP)伴发Willis环多血管段变异的价值。方法 对比分析201例64层螺旋CTA诊断为FTP及201例诊断为非FTP(对照组)的影像学资料,观察Willis环的形态学改变。结果 FTP组与对照组相比,FTP患者更易伴发大脑前动脉A1段、大脑后动脉P1段和椎动脉(VA)变异,且单侧FTP更易发生同侧A1段和P1段变细、发育不良或缺如(P<0.001),右侧VA较左侧更易发生变异(P<0.01)。而两组间PCoA、ACoA 及基底动脉的变异差异无显著性意义(P>0.05)。结论 FTP患者常伴发Willis环多血管段变异,64层螺旋CTA能够全面地评价脑血管的解剖与变异,有助于指导脑血管病的诊断与治疗。 |
| 英文摘要: |
| Objective To investigate the value of 64-slice spiral CT angiography (CTA) in demonstrating variations of multi-segments of the Circle of Willis (CoW) in patients accompanying fetal origin of the posterior cerebral artery (FTP). Methods The imaging of 201 FTP patients diagnosed by 64-slice CTA and 201 non- FTP patients selected as the control group were comparatively analyzed. We observed the anomalies of the CoW morphology on 64-slice CTA. Results Compared with the control group, patients with an FTP are more prone to develop variations of the A1 segment of the anterior cerebral artery (P<0.01), P1 segment of the posterior cerebral artery (P<0.001) and vertebral arteries (VA) (P<0.001). Furthermore, small, hypoplasia or absence of ipsilateral A1 segment and P1 segment occurred more frequently in the unilateral FTP patients as compared to the controls (P<0.001). And the right VA is more prone to develop variations than the left (P<0.01). The variation of posterior communicating arteries (PCoA), anterior communicating artery (ACoA ) and basilar artery (BA) did not differ significantly between the two groups (P>0.05). Conclusion Patients with an FTP are frequently affecting more than one segment of CoW. 64-slice spiral CTA can evaluate the anatomy and variation of cerebral vessels roundly which conduce to conduct the diagnosis and therapy of cerebral vascular diseases. |
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