摘要
目的：应用彩色多普勒超声探查颅外段椎动脉血流变化。方法：应用高频彩色多普勒超声对337例临床拟诊为椎-基底动脉供血不足患者（VBI）除外心衰、心律不齐、低血压等，进行颅外段椎动脉（674条）超声参数测量：椎动脉内径（D）、收缩峰值流速（SPV）、平均流速（TAVM）、血流量（Q）。结果：337例VBI患者，年龄小于40岁有32例，40~60岁有129例，大于60岁有176例。单侧椎动脉D≤2mm有14例，单侧D<3.0mm有228例，双侧D<3.0mm有6例。椎动脉内径比值（较粗侧与细侧比）DR=1.4±0.1；较细侧椎动脉平均内径D=（2.6±0.4）mm，平均速度TAVM=（15.2±3.1）cm/s；双侧椎动脉血流量之和Q=（176.5±26.8）ml/min。结论：随年龄增长，椎动脉血流速度及血流量逐渐减少。当一侧椎动脉内径小于3.0mm，与对侧椎动脉内径之比小于1.5，平均流速小于18cm/s，双侧椎动脉血流量之和小于200ml/min，可发生椎-基底动脉供血不足的症状，彩色多普勒超声检查可提供较为可靠的依据。
Abstract
Objective: To evaluate vertebral arterial blood flow by color Doppler flow imaging(CDFI). Methods: 337 patients diagnosed as vertebrobasilar insufficiency(VBI) were detected by CDFI. We measured vertebral artery diameter(VD), peak systolic flow velocity(SPV), time average velocity(TAVM), quantity of flow(Q). Result: There were 32 cases whose age less than 40 years old in 337 VBI patients, 129 cases were 40~60y, 176 cases were more than 60y. Unilateral VD≤2.0mm was accounted in 4％(14/337), VD<3.0mm was accounted in 67％(228/337). Bilateral VD<3.0mm was accounted in 1％(6/337). Vertebral diameter rate(VDR) was 1.4±0.1. The smallest unilateral average vertebral artery diameter was (2.6±0.4)mm, TAVM=(16.2±3.1)cm/s. Bilateral Q=(176.5±26.8)ml/min. Conclusion: Vertebral blood flow velocity and quantity descend with increasing of age. Unilateral VD<3.0mm, TAVM<18cm/s and VDR<1.5 and bilateral Q<200ml/min may result in VBI especially with arteriosclerosis. Vertebral artery stenosis occurs when VD<3.0mm. It is the accurate and important part of CDFI in diagnosing VBI.
关键词
椎底动脉供血不足 /
超声检查 /
多普勒 /
彩色
Key words
vertebrobasilar insufficiency /
ultrasonography /
Doppler /
color
张文华;夏稻子;张宇虹;林 萍;高 林.
二维及彩色多普勒超声对椎-基底动脉供血不足患者颅外段椎动脉结构及血流评价[J]. 中国临床医学影像杂志. 2007, 18(10): 729-731
ZHANG Wen-hua;XIA Dao-zi;ZHANG Yu-hong;LIN Ping;GAO Lin.
Evaluation of the vertebral arterial blood flow by CDFI and 2D ultrasonography[J]. Journal of China Clinic Medical Imaging. 2007, 18(10): 729-731
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
PDF(914 KB)
