Figure 1. Fetus in the cephalic dorsal position. The subsequent images are drawings of abdominal and thoracic sonographic views depicted as if the fetus were in this position.

• 图1胎儿呈头向仰卧位。后面的图像是胎儿位于这种姿势时所绘制的腹部和胸部超声切面的示意图。