title: Ultrasound guided invasive procedures in obstetrics.
mesh_terms: D000649:Amniocentesis; D001706:Biopsy; D001805:Blood Transfusion, Intrauterine; D002823:Chorion; D004899:Erythroblastosis, Fetal / Q000628:therapy; D005260:Female; D005312:Fetal Blood; D005332:Fetoscopy; D005333:Fetus / Q000601:surgery*; D006801:Humans; D006849:Hydrocephalus / Q000601:surgery; D011247:Pregnancy; D011272:Pregnancy, Multiple; D011296:Prenatal Diagnosis; D012306:Risk; D014463:Ultrasonography; D014564:Urogenital Abnormalities