Lung Volume MeasurementsLungTotal Lung CapacityFunctional Residual CapacityAirway ResistancePulmonary EmphysemaRespiratory MechanicsAirway ObstructionLung ComplianceAirway RemodelingLung DiseasesResidual VolumePneumonectomyRespiratory Function TestsPlethysmography, Whole BodyForced Expiratory VolumeVital CapacityTidal VolumeHeliumLung NeoplasmsLung InjuryBronchiBlood VolumeInhalationRespirationRespiratory SystemRespiratory MusclesDiaphragmEmphysemaSpirometryPulmonary Diffusing CapacityPulmonary Gas ExchangeExpiratory Reserve VolumeLung TransplantationForced Expiratory Flow RatesPulmonary AtelectasisRespiratory Physiological PhenomenaPressureAsthmaAir PressurePlethysmographyPositive-Pressure RespirationHernia, DiaphragmaticBronchial HyperreactivityPulmonary VentilationPulmonary AlveoliLung Diseases, ObstructiveMaximal Expiratory Flow-Volume CurvesRespiratory MucosaInspiratory CapacityCarcinoma, Non-Small-Cell LungBronchoconstrictionBronchoalveolar Lavage FluidRespiration, ArtificialTomography, X-Ray ComputedExhalationClosing VolumeBronchoscopyThoraxAcute Lung InjuryAirway ManagementImaging, Three-DimensionalBronchial Provocation TestsPulmonary Disease, Chronic ObstructiveThoracic WallPharynxDyspneaAdministration, InhalationPulmonary CirculationContinuous Positive Airway PressurePulmonary FibrosisIntubation, IntratrachealRespiratory Distress Syndrome, AdultFetal Organ MaturityOxygenBlood Gas AnalysisAerosolsMaximal Expiratory Flow RateOrgan SizeRespiratory HypersensitivityPlasma VolumeWork of BreathingBronchoconstrictor AgentsRespiratory Dead SpaceStroke VolumePhrenic NerveReproducibility of ResultsRespiratory InsufficiencyLung Diseases, InterstitialPulmonary SurfactantsExtravascular Lung WaterPneumoniaBronchodilator AgentsSupine PositionMagnetic Resonance ImagingBronchographyReference ValuesBronchoscopesRadiography, ThoracicDogs