动脉血流收缩期峰值(A或S)和舒张末期的谷值(B或D),计算出S/D或A/B比值,同时还可计算阻力指数[RI=(S-D)/S]及搏动指数[PI=2(S-D)/(S+D)]。
CDFI可做动力学的观察,测量血流速度、阻力指数(RI)、搏动指数(PI)是有临床意义的预测手段,恶性肿瘤的RI、PI低于良性肿瘤,目前将RIPI<1.0作为良、恶性肿瘤的分界,对恶性肿瘤有一定的诊断...
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...性的初步研究_遗传学_发表网 tance index,RI)、收缩期与舒张期比值(Systolic/diastolic,S/D)、搏动指数(Pulsatility index,PI)是否有差别。研究表明输卵管切除术和卵巢囊肿剥除术对卵巢基质血流指数RI、S/D、PI无显著影响。
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...医学会期刊-中国医师协会期刊-医学外文文献 善[(9.10±2.56)%vs(6.13±1.60)%,P搏动指数(pulse index,PI)值的改变呈显著负相关(rs=-0.432,P=0.031),即患者FMD提高越多,健侧MCA的血管顺...
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All cases before surgery, within 1 to 3 days received transvaginal two-dimensional color Doppler ultrasound to watch blood condition and record the measured parameters of blood flow pulsatility index (PI) and resistance index (RI).
全部研究对象在手术前1-3天内接受经阴道二维彩色多普勒超声检查,观查宫颈的血流情况并记录所测血流学参数搏动指数(PI)和阻力指数(RI)。
参考来源 - 彩色多普勒超声检测宫颈管内肿瘤血流参数与MVD的相关性研究·2,447,543篇论文数据,部分数据来源于NoteExpress
各组间阻力指数(RI)、搏动指数(PI)无显著差异。
Resistance index(RI) and pulsatility index(PI) were not significantly different in different age groups.
结果与正常组比较,妊娠晚期合并羊水过少的胎儿肾动脉搏动指数明显升高。
Results The PI of fetal renal artery with oligohydramnios were significantly higher than the normal.
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。
EEG abnormality rate was 15.2%, flow velocity and pulsatility index were reduced and the vascular murmur disappeared after treatment.
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