[Determination of the heart size by indirect radiography. 3. Construction of a more easily operable apparatus for determination of the relative value of the heart and lung size].
D006321:Heart / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D008168:Lung / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D011859:Radiography; D013679:Technology, Radiologic / Q000295:instrumentation*