Fig. 6From: Ultrasound angiology reference standards of fetal cerebroplacental flow in normal Egyptian gestation: statistical analysis of one thousand observationsNormal Doppler imaging of MCA and UA at 30 weeks of gestational age in a 24-year-old female mother. FHR, 148 b/m; placenta grade II; and EFW, 1564 g. a Doppler US examination of fetal MCA revealed PSV = 77.22, S/D = 4.42, RI = 0.77, and PI = 1.60. b Doppler US examination of maternal UA revealed PSV = 75.62, S/D = 2.59, RI = 0.61, and PI = 0.86. CPR Doppler values: PSV = 1.02, S/D = 1.7, RI = 1.26, and PI = 1.86Back to article page