Stephens J D, Birnholz J C
J Clin Ultrasound. 1978 Apr;6(2):100-2. doi: 10.1002/jcu.1870060207.
Continuous observation of fetal movement patterns is a novel and useful capability of new high-speed ultrasound imaging systems. Confirmatory documentation of human fetal breathing as a component of these movement patterns has been achieved using a phased-array real time ultrasound sector scanning system. This system permits direct visualization of fetal breathing movements. Permanent recordings can be made on videotape. Recordings can also be made as a time-motion echocardiograms during continuous observation of the full sector. Fetal breathing movements were seen in five patients. The earliest period of gestation at which fetal breathing was seen was 20 weeks.
连续观察胎儿运动模式是新型高速超声成像系统的一项新颖且有用的功能。使用相控阵实时超声扇形扫描系统已证实人类胎儿呼吸是这些运动模式的一个组成部分。该系统能够直接观察到胎儿的呼吸运动。可以将其永久记录在录像带上。在对整个扇形区域进行连续观察期间，也可以将记录制作成时间 - 运动超声心动图。在五名患者中观察到了胎儿呼吸运动。观察到胎儿呼吸的最早孕周为20周。
