移植肾肾动脉狭窄的彩色多普勒超声诊断

Colour Doppler ultrasound in the diagnosis of transplant renal artery stenosis

目的探讨运用多项彩色多普勒超声(CDUS)指标综合诊断移植肾肾动脉狭窄(TRAS)的的新标准。方法回顾性分析20例经数字减影血管造影(DSA)证实的TRAS的CDUS指标:移植肾肾动脉收缩期峰值血流速度(PSV)、肾动脉与髂外动脉PSV比值(RIR)、肾动脉与叶间动脉PSV比值(峰值流速后比)和叶间动脉阻力指数(RI);并与对照组相应指标对比。结果TRAS组与对照组的上述4项指标之间均存在显著统计学差异(P<0.001)。新标准具有良好的敏感性(100%)和较高的特异性。结论新标准能够提高CDUS对TRAS的诊断率。

Objective To establish a new criterion about Color Doppler Ultrasound（CDUS） in the diagnosis of transplant renal artery stenosis（TRAS） by using multiple index.Methods Twenty TRAS patients were analyzed as TRAS group retrospectively verified by digital subtraction angiography（DSA）. Four CDUS indexes, including the peak systolic velncity（PSV） in the renal artery, a ratio of the PSV in the renal artery to that in the external iliac artery（RIR）, a ratio of the PSV in the renal artery to that in the interlober arteries （the POST- PSV ratio） and the resistent index （RI） in the interlobar arteries were compared with those of the control group.Results Statistical significances were identified between all the 4 indexes of the two groups. Using this new criterion, CDUS had a sensitivity of 100% and a high specificity in the diagnosis of TRAS. Conclusion This new criterion can improve the validity of CDUS in the diagnosis of TRAS.