Port, Johannes A simple method to reconstruct the molar mass signal of respiratory gas to assess small airways with a double-tracer gas single-breath washout. [electronic resource] - Medical & biological engineering & computing Nov 2017 - 1975-1987 p. digital Publication Type: Journal Article ISSN: 1741-0444 Standard No.: 10.1007/s11517-017-1633-y doi Subjects--Topical Terms: AdultAirway Obstruction--diagnosisChildHelium--metabolismHumansLung--metabolismPulmonary Disease, Chronic Obstructive--diagnosisPulmonary Ventilation--physiologyReproducibility of ResultsRespirationSulfur Hexafluoride--metabolismTidal Volume--physiology