[Pneumoamniography].
D000650:Amnion; D005260:Female; D005333:Fetus / Q000000981:diagnostic imaging*; D006801:Humans; D010923:Placenta Previa / Q000175:diagnosis*; D011247:Pregnancy; D011859:Radiography
AMNION; FETUS/radiography; PLACENTA PRAEVIA/diagnosis
Pneumoamniosgrafia.