[Value of ultrasonic apparatus using the Doppler effect in obstetrics].
D005260:Female; D005333:Fetus / Q000502:physiology*; D006801:Humans; D008722:Methods; D011247:Pregnancy; D011295:Prenatal Care; D014465:Ultrasonics
Intérêt des appareils à ultrasons utilisant l'effet Doppler en obstétrique.