title: Radiographic measurement of thoracic gas volume.
mesh_terms: D000328:Adult; D005260:Female; D005740:Gases; D006801:Humans; D008171:Lung Diseases / Q000000981:diagnostic imaging; D008173:Lung Diseases, Obstructive / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D010100:Oxygen / Q000097:blood; D011658:Pulmonary Fibrosis / Q000000981:diagnostic imaging; D013902:Radiography, Thoracic; D012119:Respiration; D012507:Sarcoidosis / Q000000981:diagnostic imaging; D013147:Spirometry
chemical_list: D005740:Gases; D010100:Oxygen