Radiology in obstetrics.
D005260:Female; D005333:Fetus / Q000000981:diagnostic imaging*; D005865:Gestational Age; D006801:Humans; D008297:Male; D010384:Pelvic Bones / Q000000981:diagnostic imaging*; D010387:Pelvimetry; D010923:Placenta Previa / Q000175:diagnosis*; D011247:Pregnancy; D011859:Radiography; D011877:Radionuclide Imaging; D014463:Ultrasonography