The validity of measuring bone density from roentgenograms by means of a bone density computing apparatus.
D015519:Bone Density; D001842:Bone and Bones / Q000000981:diagnostic imaging*; D006801:Humans; D008903:Minerals / Q000737:chemistry*; D011859:Radiography
D008903:Minerals
BONE AND BONES/radiography; MINERALS/chemistry