Detection of tumor blood flow within the spectrum, recorded peak systolic velocity (PSV) and resistance index (RI).

检测肿瘤内部的血流频谱，记录收缩期峰值流速(PSV)和阻力指数(RI)。

youdao

The result demonstrated the accordance of this two methods. The dynamics of blood flow in hemodialysis vascularity was evaluated by pulsatility index(PI) and resistence index(RI).

对搏动指数（PI）和阻力指数（RI）用于评价透析血管血流动力学方面的变化作了初步分析。

youdao

The combination of three parameters of Doppler is pulse index (PI), resistance index (RI), A/B ratio together with.

用搏动指数、阻力指数、A/B比值，结合二维实时显像对胎儿宫内生长迟缓、畸形、宫内胎儿死亡的研究。

youdao