彩色多普勒超声在高血压病脑血流检测中的应用

Application of Color Doppler Ultrasound in Hypertension

目的 探讨彩色多普勒超声在高血压病患者脑血管血流动力学变化中的应用价值。方法 采用二维彩色多普勒超声 ( CDFI)和单一经颅多普勒超声 ( TCD)对 144例高血压病患者脑血流动力学变化进行了检测。结果 高血压病时脑血管血流速度、血流频谱及脉动指数 ( PI)可发生变化 :1脑血流动力学改变以脑血流速度增加和 PI值升高为主 ;2频谱形态异常 ,包括峰间距增大或缩小 ,收缩峰高尖或圆钝 ,P2 >P1,伴有异常血流信号 ;3高血压病患者随着年龄和发病时间的延长 ,其脑血流速度和频谱形态异常的发生率明显增高 ,60岁以上和发病时间 2 0年以上时达 10 0 % .结论 彩色多普勒超声对预测高血压病患者的脑血管血流动力学变化有一定价值 ,可成为检测高血压病患者脑血管病变及其血流动力学变化的一种良好方法 ,但并非为高血压病诊断的标准。

Objective To study the application of color Doppler ultrasound in hypertension.Method 144 cases hypertension patients were examinated by single transcranial Doppler ultrasound(TCD)and color Doppler flow imaging(CDFI).Result When hypertension the blood flow velocity and PI were many increased abnormality of the spectrum,such as double peak distance increase or decrease,systolic peak was high-sharp or circle-top,P 2>P 1,with signal of abnormal blood flow and murmur.Abnormality and changes step up with age of patient and time of hypertension and amount to 100% above age of 60 and 20 years of hypertension.Conclusion The authors believe that color Doppler ultrasound has important value for examining cerebral vessel and hemodynamics changes,it may become a useful examining method of hypertension or a referential material of diagnosis,but it can be not diagnostic cristeria of hypertension. [