Device to estimate fetal age. A clinical and radiologic investigation.
D005314:Embryonic and Fetal Development; D005260:Female; D005333:Fetus / Q000000981:diagnostic imaging*; D005865:Gestational Age; D006801:Humans; D008159:Lumbar Vertebrae; D008722:Methods; D011247:Pregnancy; D011859:Radiography; D013679:Technology, Radiologic