title: Obstetrical ultrasound--today and tomorrow.
authors: John C
authors: JC
authors: Hobbins
mesh_terms: D000013:Congenital Abnormalities / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D011248:Pregnancy Complications / Q000000981:diagnostic imaging; D016216:Ultrasonography, Prenatal / Q000295:instrumentation / Q000592:standards / Q000639:trends