急性上尿路梗阻早期肾脏血流和剪切波速度变化的探索

Changes in renal blood flow and shear wave velocity in early stage of acute upper urinary tract obstruction

目的:探讨肾脏血流和剪切波速度(shear wave velocity,Vs)变化在急性单侧上尿路梗阻早期中的应用价值。方法:对50例单侧急性上尿路梗阻病例、122例正常人进行超声检查,测算双肾动脉阻力指数(resistance index,RI)及双侧肾实质Vs值。结果:在急性上尿路梗阻发生早期,梗阻侧肾脏的RI值略高于对侧肾及对照肾,但无显著性差异;梗阻侧肾脏的Vs值显著高于对侧肾及对照肾,有显著性差异。结论:声脉冲辐射力成像(acoustic radiation force impulse,ARFI)技术具有安全、方便、无创、可重复等优点,有助于急性上尿路梗阻的早期诊断,具有较高的准确率。

Objective：To explore the values of changes in renal blood lfow and shear wave velocity （Vs） in thediagnosis of early stage of acute upper urinary tract obstruction.Methods：Ultrasound examination was performed in 50 cases of unilateral upper urinary tract obstruction and 122 cases of normal subjects. The resistance index （RI） of bilateral renal arteries and Vs of bilateral renal cortex were measured.Results：In early stage of acute upper urinary tract obstruction, RI values of the obstructed kidneys were slightly higher than those of the contralateral kidneys and control kidneys, but there was no signiifcant difference. Vs values of the obstructed kidneys were signiifcantly higher than those of the contralateral kidneys and control kidneys, and there were signiifcant differences.Conclusion：Acoustic radiation force impulse （AFRI） imaging is a safe, convenient, noninvasive and repeatable tool in the diagnosis of early stage of acute upper urinary tract obstruction and has high accuracy.