[Ultrasonics according to Doppler's principle used in obstetrics].
D004562:Electrocardiography; D005260:Female; D005318:Fetal Heart; D006326:Heart Auscultation / Q000295:instrumentation*; D006801:Humans; D008722:Methods; D010701:Phonocardiography; D010920:Placenta / Q000502:physiology*; D011247:Pregnancy; D013997:Time Factors; D014465:Ultrasonics / Q000295:instrumentation
Ultralyd efter Doppler's princip anvendt i obstetrikken.