title: Diagnosis of emphysema.
authors.forename: P C
authors.initials: PC
authors.lastname: Pratt
mesh_terms: D006801:Humans; D008173:Lung Diseases, Obstructive / Q000000981:diagnostic imaging*; D011237:Predictive Value of Tests; D011656:Pulmonary Emphysema / Q000000981:diagnostic imaging*; D011859:Radiography; D012044:Regression Analysis; D013997:Time Factors