【摘要】 目的联合彩色多普勒和经颅多普勒技术观察椎动脉起始段狭窄70%～99%的患者椎动脉V1段、V2段、V4段的特殊血流动力学改变。方法选择6例椎动脉起始段狭窄70%～99%引起远段收缩期切迹频谱改变的患者,分析其特点。结果 V4段均出现了收缩期切迹的不同频谱形态改变,V1段均无特异改变,V2段有3例呈低速圆钝频谱,1例Ⅰ型收缩期切迹频谱,1例Ⅱ型收缩期切迹频谱。结论椎动脉收缩期切迹频谱并非锁骨下动脉狭窄的特有改变,椎动脉起始段狭窄亦可出现。更多还原

【Abstract】 Objective To observe the specific hemodynamic changes of vertebral artery V1 section V2 section and V4 section in patients with proximal vertebral artery stenosis 70% ~ 99% by color Doppler flow imaging and transcranial Doppler sonography. Methods The characteristics of systolic cut trace changes in 6 patients with proximal vertebral artery stenosis 70% ~ 99% were analyzed. Results All V4 section had systolic cut trace changes. No specific change was found in V1 section. 3 cases had low velocity and obtuse spectrum, one case had typeⅠsystolic cut trace spectrum and one case had typeⅡ systolic cut trace spectrum in V2 section. Conclusion Systolic cut trace change is not the special change of subclavian artery stenosis, which may also appear in the proximal vertebral artery stenosis.更多还原