title: [An application of Kr-81m gas for chronic obstructive pulmonary disease.--A comparison of various inhalation techniques (author's transl)].
mesh_terms: D000328:Adult; D000368:Aged; D002908:Chronic Disease; D005260:Female; D006801:Humans; D007726:Krypton; D008173:Lung Diseases, Obstructive / Q000175:diagnosis* / Q000000981:diagnostic imaging; D008297:Male; D008722:Methods; D008875:Middle Aged; D011868:Radioisotopes; D011877:Radionuclide Imaging; D012119:Respiration; D014980:Xenon Radioisotopes
chemical_list: D011868:Radioisotopes; D014980:Xenon Radioisotopes; D007726:Krypton