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目的探讨短暂性脑缺血发作（ＴＩＡ）患者的颈动脉和椎动脉的形态、结构和血液动力学改变。方法用彩色多普勒超声观察了５８例ＴＩＡ患者颈动脉和椎动脉形态、结构和血流动力学改变。结果ＴＩＡ组颈动脉和椎动脉内中膜增厚，内膜面粗糙，见斑块３７处，平均血流速度减慢，搏动指数和阻力指数增高，颈动脉内径增大，椎动脉内径狭窄，血流量下降，提示ＴＩＡ患者存在明显的颈动脉和椎动脉硬化，平均血流速度降低，血管外周阻力增高。结论彩色多普勒超声检查可作为ＴＩＡ病因诊断的一项无创伤性手段
Objective To investigate the morphological, structural and hemodynamic changes of carotid artery and vertebral artery in patients with transient ischemic attack (TIA). Methods The morphology, structure and hemodynamics of carotid artery and vertebral artery in 58 TIA patients were observed by color Doppler ultrasonography. Results In the TIA group, the intima of the carotid and vertebral arteries were thickened and the intima was rough. There were 37 plaques in the TIA group. The mean blood flow velocity was slowed down. The pulsatility index and resistance index increased. The diameter of the carotid artery increased, the diameter of the vertebral artery narrowed, Blood flow decreased, suggesting that TIA patients with significant carotid and vertebral arteriosclerosis, the average blood flow velocity decreased, peripheral vascular resistance increased. Conclusion Color Doppler ultrasonography can be used as a noninvasive means to diagnose the cause of TIA