title: [The value of residual volume testing in determining degree of emphysema in patients with pneumoconiosis].
abstract: A comparative study of chest roentgenograms and the value of RV/TLC% in determining degree of emphysema of patients with pneumoconiosis and workers exposed to dust was made in 400 cases. Accordance rate of RV/TLC% with roentgenograms in determining emphysema in the same subjects was 61.1% and that in the patients group, 67.7%. Moreover, the accordance rate increased with grade of pneumoconiosis diagnosed. The results showed that RV/TLC% was valuable in determining emphysema of patients with pneumoconiosis. The classes of degree of emphysema were proposed according to the testing value of RV/TLC%.
authors.affiliation: Pneumoconiosis Research Unit.
authors.forename: M
authors.initials: M
authors.lastname: Wang
authors.forename: X
authors.initials: X
authors.lastname: Wang
authors.forename: X
authors.initials: X
authors.lastname: Wang
authors.forename: Z
authors.initials: Z
authors.lastname: Wang
authors.forename: C
authors.initials: C
authors.lastname: Zhan
mesh_terms: D000328:Adult; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging / Q000503:physiopathology*; D008875:Middle Aged; D011009:Pneumoconiosis / Q000150:complications*; D011656:Pulmonary Emphysema / Q000000981:diagnostic imaging / Q000209:etiology / Q000503:physiopathology*; D011859:Radiography; D012115:Residual Volume