Rocky Vista University, Ivins, Utah, USA.
Rocky Vista University, Ivins, Utah, USA.
Ultrasound Med Biol. 2020 May;46(5):1179-1188. doi: 10.1016/j.ultrasmedbio.2020.01.011. Epub 2020 Feb 17.
To assess the feasibility of ultrasound imaging in depicting the changes in kidney size, hemodynamics and cortex viscoelasticity after hydration, we prospectively performed 2-D ultrasound shear wave elastography (SWE) and Doppler sonography of bilateral kidneys in 30 volunteers. Kidney length, cortex shear wave velocity (SWV), shear wave dispersion (SWD), interlobar artery peak systolic velocity (PSV), end-diastolic velocity (EDV) and resistive index (RI) were measured before and 60 min after with and without drinking water (1 L). The differences in kidney length, SWV, PSV, EDV and color pixel intensity before and after hydration were significant (p < 0.001), whereas these differences were not significant without hydration (p > 0.05). SWD and RI did not significantly differ with or without hydration. Inter- and intra-observer reliability in performing SWE and Doppler sonography was good. The use of Doppler sonography and ultrasound SWE to evaluate the effect of hydration on kidney size, hemodynamics and viscoelasticity seem to be feasible.
为评估超声成像在描绘水化后肾脏大小、血液动力学和皮质粘弹性变化方面的可行性，我们前瞻性地对 30 名志愿者的双侧肾脏进行了二维超声剪切波弹性成像（SWE）和多普勒超声检查。在饮水（1 L）前后分别测量了肾脏长度、皮质剪切波速度（SWV）、剪切波频散度（SWD）、叶间动脉收缩期峰值速度（PSV）、舒张末期速度（EDV）和阻力指数（RI）。在饮水前后，肾脏长度、SWV、PSV、EDV 和彩色像素强度的差异均有统计学意义（p < 0.001），而不饮水时差异无统计学意义（p > 0.05）。SWD 和 RI 无论是否饮水差异均无统计学意义。SWE 和多普勒超声检查的观察者内和观察者间可靠性良好。使用多普勒超声和超声 SWE 评估水化对肾脏大小、血液动力学和粘弹性的影响似乎是可行的。
