Resistance index(RI) and pulsatility index(PI) were not significantly different in different age groups.
各组间阻力指数（RI）、搏动指数（PI）无显著差异。
Objective (1)To study the change of fetal middle cerebral artery pulsatility index(PIMCA) in twin pregnancy;
目的探讨正常双胎妊娠期间胎儿大脑中动脉搏动指数的变化；
EEG abnormality rate was 15.2%, flow velocity and pulsatility index were reduced and the vascular murmur disappeared after treatment.
治疗后eeg异常率下降到15.2%，血流速度及搏动指数降低，血管杂音消失。
Lesion vascularity, pulsatility index (PI), and resistive index (ri) of the vessels detected were analyzed. And correlated with histologic results.
分析病变处血流的搏动指数(PI)和阻力指数(R I)与病理组织学结果的关系。
Results: the dynamic changes of cerebral blood flow with higher pulsatility index like as cerebral arteriosclerosis were found in 89. 7 per cent of the patients.
结果：89.7%患者表现有脉动指数增高等脑动脉硬化的脑血液动力学改变。
The arterial pulsatility index was significantly higher in patients with lacunar infarction than in those without lacunar infarction as well as in controls(P<0.01).
糖尿病并腔隙性脑梗死患者的动脉搏动指数明显高于无脑梗死组和对照组（P<0 .0 1）。
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。
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。
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