短暂性脑缺血发作患者颈动脉多普勒超声研究

目的　用彩色普勒超声(CDFI)观察短暂性脑缺血发作(TIA)患者颈动脉形态及血流动力学的改变。方法　观察了43例TIA患者两侧颈动脉内膜一中膜厚度、斑块情况及收缩期峰速、舒张末流速，并与性别、年龄相匹配的37例健康人对照。结果　TIA组颈动脉内膜干中膜厚度较对照组明显增厚，发现斑块34例，占79．07％，而对照组9例，占24．32％。同时发现，TIA组颈总动脉收缩期峰速、舒张期末流速均明显高于对照组。结论　应用CDFI可了解颈动脉斑块性质及血流动力学改变，有助于TIA的诊断。

Study of Color Doppler Flow Imaging of Carotid Artery in Patients with Transient Ischemic Attack

Objective To study the changes of morphology and hemodynamics of the carotid artery in patients with transient ischemic attack(TIA).by color Doppler flow imaging(CDFI).Methods CDFI was used for quantification of intima-medium thickness,identification of plaques and determination of systolic peak velocity and diastolic velocity of the bilateral carotid artery.Forty-three patients with TIA and 37 healthy subjects were delected.Results The mean intima-medium thickness in patients with TIA was significantly increased than that of the control group.In the TIA group,34 cases of plaques(79.07%)were observed,while only 9 cases of plaques(24.32%)were found out in the control group.The systolic peak velocity and diastolic velocity were significantly increased in the bilateral carotid artery of patients with TIA as compared with those of the control group.Conclusions Ultrasonography can evaluate the property of carotid plaque and hemodynamics of the carotid artery,which contributes to the diagnosis of TIA.