[Study of the regional distribution of inspired gas with radioactive tracers (author's transl)].
Two different techniques are utilized: aerosol with 198Au particles (size 0.5-15 micron) and different gaz mixtures (air; O2 20% + He 80+; O2 60% + N2 40%; O2 60% + He 40%) with 133Xe and registration of the regional distribution along a wash-in (upper, middle and basal) of every lung (gamma camer, computer, Polaroid photographs, scans), performed in three groups of subjects (normal: 5, bronchogenic carcinoma: 11 and chronic bronchitis: 5). Modifications of the airway distribution and blood gas data according to the technical approach (particularly, variations of densities and viscosities) are compared with results in normal subjects.
D000328:Adult; D000368:Aged; D001991:Bronchitis / Q000503:physiopathology*; D002283:Carcinoma, Bronchogenic / Q000503:physiopathology*; D006050:Gold Radioisotopes; D006371:Helium; D006801:Humans; D008175:Lung Neoplasms / Q000503:physiopathology*; D008875:Middle Aged; D009584:Nitrogen / Q000502:physiology; D010100:Oxygen / Q000502:physiology; D011865:Radioisotope Dilution Technique; D012119:Respiration; D014980:Xenon Radioisotopes
D006050:Gold Radioisotopes; D014980:Xenon Radioisotopes; D006371:Helium; D009584:Nitrogen; D010100:Oxygen
Exploration de la distribution aérienne à l'aide de traceurs radio-isotopiques.