title: Doppler ultrasound and the pregnant uterus.
abstract: Precise location of the sources of sound heard from the pregnant uterus when using continuous wave Doppler ultrasound was achieved with depth-gated pulse Doppler and real-time ultrasound. The characteristics of these sounds are described. No sounds were identified from the main mass of the placenta.
mesh_terms: D004301:Doppler Effect; D005260:Female; D005333:Fetus / Q000502:physiology; D006801:Humans; D010920:Placenta / Q000502:physiology; D011247:Pregnancy; D014465:Ultrasonics; D014463:Ultrasonography; D014599:Uterus / Q000502:physiology*