Methods The tricuspid regurgitation and flow of the pulmonary artery and ductus arteriosus in 216 normal fetuses were measured by color Doppler echocardiography.
英
美
- 方法:运用彩色多普勒血流显像检测216例正常胎心时期三尖瓣返流、肺动脉及动脉导管血流。