Pelvimetry.
D000328:Adult; D005260:Female; D005333:Fetus / Q000528:radiation effects; D006801:Humans; D010384:Pelvic Bones / Q000000981:diagnostic imaging*; D010387:Pelvimetry; D011247:Pregnancy; D011248:Pregnancy Complications / Q000000981:diagnostic imaging; D011830:Radiation Effects; D011859:Radiography