...医学综述 tery，CRA)、睫状后短动脉(shortpost ciliary artery，SPCA)血流，计算血流的收缩期峰值流速(peak systolic velocity，PSV)、舒张末期速度(end diastolic velocity，EDV)和阻力指数(Resistive..
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...综述 tery，CRA)、睫状后短动脉(shortpost ciliary artery，SPCA)血流，计算血流的收缩期峰值流速(peak systolic velocity，PSV)、舒张末期速度(end diastolic velocity，EDV)和阻力指数(Resistive...
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的收缩期峰值血流速度 peak systolic velocity
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)。
Detection of tumor blood flow within the spectrum, recorded peak systolic velocity (PSV) and resistance index (RI).
目的探讨脐动脉收缩期血流峰值（S）与舒张末期血流速度（D）的比值（S/D）对预测胎儿宫内缺氧的临床价值。
Objective This paper is to investigate the ratio of the systolic peak value and the end-diastolic velocity of blood flow (S/D value) and its clinical value, which can predict fetal anoxia.
结果：患眼的视网膜中央动脉收缩期峰值血流速度、平均血流速度均低于对侧眼（P＜0．0001）。
Results:The peak systolic velocity and the time average velocity of the central retinal artery of the affected eyes were lower than those of the patients healthy eyes(P<0 0001).
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