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目的:探讨慢性肾病的彩色多普勒超声声像图表现及血流动力学特征。方法选取我院两组患者,其中慢性肾病组48例,健康组42例,应用彩色多普勒超声分别对两组的肾脏大小形态、回声改变、肾内血流情况及肾段动脉和叶间动脉的收缩期的最大流速(Peak Velocity in Systole,Vs)及阻力指数(Resistance index,RI)进行比较分析。结果肾脏大小、回声改变及彩色血流显像能够有效反映各期肾功能不全程度,但特异性不强。肾功能代偿期与对照组进行比较 Vs和RI无明显变化(P>0.05),肾功能失代偿期及肾衰竭期与对照组RI比较明显有所增高(P<0.05或P0.05),renal decompensation and renal failure stage and control group RI obviously increased (P<0.05 or P<0.01) Conclusion:Color Doppler ultrasound has very practical clinical application value for the observation and diagnosis of kidney in patients with chronic kidney disease.