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利用彩色多普勒观察输尿管结石梗阻患者与正常人膀航喷尿情况以探讨彩色多普勒在判断膀眈输尿管结石梗阻中的作用四］，因尿液由输尿管人膀眈呈喷射状，有一定速度，彩色多普勒可以较清晰地观察尿液流动信号（以下简称尿流信号），在分析输尿管结石中有一定价值。1资料和方法选
The use of color Doppler ultrasound in patients with ureteral stones obstruction and normal bladder jet urination to explore the role of color Doppler in the determination of obstruction ureteral stone obstruction in four], due to urinary bladder was urinary bladder was jet-like, there A certain speed, color Doppler can more clearly observe the urine flow signal (hereinafter referred to as urinary flow signal), ureteral calculi in the analysis of a certain value. 1 data and method selection