It is critical for cerebral vascular disease diagnosis through Doppler to detect the maximum and the minimum of the caro......

目的:评价脐动脉超声血流图在产前监测中的作用。方法:孕妇260例(孕37～42周)用多普勒超声行脐动脉血流图检查并计算S/D值,胎心无负......