Pelvimetry by ultrasound in late pregnancy.
D002508:Cephalometry; D005314:Embryonic and Fetal Development; D005260:Female; D006801:Humans; D010387:Pelvimetry; D010388:Pelvis / Q000000981:diagnostic imaging; D011247:Pregnancy; D011859:Radiography; D014465:Ultrasonics / Q000295:instrumentation