Methods:By color Doppler ultrasound, we contrast the MCAPI/UAPI of the 32 cases which heart rate is abnormal with what of the 49 cases which heart rate is normal.
材料与方法：应用彩色多普勒超声对32例胎心异常及49例胎心正常者进行了大脑中动脉、脐动脉的PI比值的对比分析。
Methods:By color Doppler ultrasound, we contrast the MCAPI/UAPI of the 32 cases which heart rate is abnormal with what of the 49 cases which heart rate is normal.
材料与方法：应用彩色多普勒超声对32例胎心异常及49例胎心正常者进行了大脑中动脉、脐动脉的PI比值的对比分析。
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