Use of the helium-dilution method to assess the mixing of gases in the lungs.
D005740:Gases; D006371:Helium; D006801:Humans; D007201:Indicator Dilution Techniques; D008168:Lung; D012123:Pulmonary Ventilation; D012129:Respiratory Function Tests
D005740:Gases; D006371:Helium
RESPIRATION/function tests