Huygen, P.E.M.

volume indicator wash-out indicator gas gas-fraction ventilation patient fraction measurement index lung volume ventilation inhomogeneity end-expiratory subject curve volumes regression index signal inhomogeneity regression estimation figure end-expiratory lung volume value space difference inspiratory pressure function wash-out tests compartment chapter result delay expiratory method ratio model variation breath noise analysis indicator gas-fraction wash-out test deviation alveolar oxygen calculation expiration effect device quotient mass spectrometer uitwa helium indicator gases table gas-fractie carbon dioxide ventilator spectrometer accuracy system technique moment amount order process expirogram error volumes estimation curves washout moment ratio index regression line tiffeneau index gas-fraction signal cause flow signal blood inspiratory oxygen fraction disease