title: Use of lung pressure-volume curves and helium-sulphur hexafluoride washout to detect emphysema in subjects with mild airflow obstruction.
mesh_terms: D001249:Asthma / Q000175:diagnosis*; D001944:Breath Tests / Q000379:methods; D003937:Diagnosis, Differential; D006371:Helium; D006801:Humans; D008176:Lung Volume Measurements; D008297:Male; D011656:Pulmonary Emphysema / Q000175:diagnosis*; D012123:Pulmonary Ventilation; D013459:Sulfur Hexafluoride
chemical_list: D006371:Helium; D013459:Sulfur Hexafluoride