Simple principles in radiodiagnosis.
D001847:Bone Diseases / Q000000981:diagnostic imaging; D003906:Developing Countries; D006331:Heart Diseases / Q000000981:diagnostic imaging; D006801:Humans; D007592:Joint Diseases / Q000000981:diagnostic imaging; D008171:Lung Diseases / Q000000981:diagnostic imaging; D008722:Methods; D011859:Radiography; D011860:Radiography, Abdominal