Objective To investigate the relations between absent and/or reverse end diastolic velocity of fetal umbilical artery (AEDV) and maternal and fetal pathological factors and perinatal outcome. 目的探讨胎儿脐动脉舒张末期血流缺失、返流(AEDV)的产生因素及与围产儿结局的关系。
The hemodynamic parameters measured in the lesion locations included peak systolic velocity (PSV), end diastolic velocity (EDV), and resistance index (RI). 病灶局部所测血流动力学参数为收缩期峰值血流速度(PSV)、舒张末期血流速度(EDV)及阻力指数(RI)。
The IMT，the rate of the soft and compound plaques and the end diastolic velocity were valuable indexes of carotid lesions related to cerebral infarction. 颈动脉IMT增厚、软斑和复合斑发生率高、舒张期血流速度降低对脑梗死的预测和防治可能有所助益。
The earliest abnormal of renal blood flow occured in hypertensives included that the end diastolic velocity (V d) of interlobar artery was decreased and the acceleration time (AT) of segmental and interlobar artery was increased. 叶间动脉舒张期末血流速度 (Vd)的减慢、血流峰速加速时间的延长是高血压病患者最早出现的肾血流动力学异常 ;
The echo appearance and blood supply of rectal tumors was analyzed, with the peak systolic velocity (PSV), end diastolic velocity (EDV), resistance index (RI) in tumors vessels assessed. 结果腺瘤肠壁层次清晰,肿瘤多为高回声,直肠癌正常肠壁层次消失,肿瘤为低回声。
Transrectal color Doppler ultrasound was used to scanning prostates and seminal vesicles,and the peak systolic velocity(PSV),end diastolic velocity(EDV),and resistance index(RI) were determined. 结果:对照组前列腺组尿道动脉PSV、RI与男性不育组比较差异有显著性(P<0.