title: Detection of obstructive pulmonary disease. Relative sensitivity of ventilation-perfusion studies and chest radiography.
mesh_terms: D002986:Clinical Trials as Topic; D005069:Evaluation Studies as Topic; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000175:diagnosis* / Q000000981:diagnostic imaging; D011859:Radiography; D011868:Radioisotopes; D011877:Radionuclide Imaging; D014692:Ventilation-Perfusion Ratio; D014978:Xenon
chemical_list: D011868:Radioisotopes; D014978:Xenon