Diagnosis of structural abnormalities in the fetus.
D000653:Amniotic Fluid / Q000502:physiology; D000013:Congenital Abnormalities / Q000175:diagnosis*; D005260:Female; D005332:Fetoscopy; D005865:Gestational Age; D006801:Humans; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D011263:Pregnancy Trimester, Third; D011296:Prenatal Diagnosis; D012306:Risk; D014465:Ultrasonics