Evaluation of the vertebral arterial blood flow by CDFI and 2D ultrasonography

ZHANG Wen-hua; XIA Dao-zi; ZHANG Yu-hong; LIN Ping; GAO Lin

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Journal of China Clinic Medical Imaging ›› 2007, Vol. 18 ›› Issue (10) : 729-731.

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Evaluation of the vertebral arterial blood flow by CDFI and 2D ultrasonography

ZHANG Wen-hua, XIA Dao-zi, ZHANG Yu-hong, LIN Ping, GAO Lin

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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.

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vertebrobasilar insufficiency / ultrasonography / Doppler / color

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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