The use of ultrasound in obstetrics.
D000005:Abdomen / Q000033:anatomy & histology; D000653:Amniotic Fluid; D001827:Body Height; D000013:Congenital Abnormalities / Q000175:diagnosis; D005260:Female; D005269:Femur / Q000033:anatomy & histology; D005315:Fetal Diseases / Q000175:diagnosis*; D005317:Fetal Growth Retardation / Q000175:diagnosis; D005325:Fetal Organ Maturity; D005333:Fetus / Q000033:anatomy & histology; D005865:Gestational Age; D006128:Growth; D006130:Growth Disorders / Q000175:diagnosis; D006257:Head / Q000032:analysis; D006801:Humans; D008168:Lung / Q000254:growth & development; D009436:Neural Tube Defects / Q000175:diagnosis; D010920:Placenta / Q000033:anatomy & histology; D011247:Pregnancy; D011272:Pregnancy, Multiple; D012306:Risk; D013909:Thorax / Q000033:anatomy & histology; D014463:Ultrasonography; D014599:Uterus / Q000033:anatomy & histology