title: Preliminary studies for a possible use of Doppler signals in the analysis of systolic time intervals of fetal heart.
mesh_terms: D004301:Doppler Effect; D004452:Echocardiography; D005260:Female; D005318:Fetal Heart / Q000502:physiology*; D005323:Fetal Monitoring / Q000379:methods*; D006801:Humans; D008433:Mathematics; D009200:Myocardial Contraction; D011247:Pregnancy; D013599:Systole; D014463:Ultrasonography