Lung Volume MeasurementsPlethysmography, Whole BodyLungRespiratory Function TestsBlood Volume DeterminationLung DiseasesForced Expiratory VolumeVital CapacityTotal Lung CapacityFunctional Residual CapacityImaging, Three-DimensionalReproducibility of ResultsBlood VolumePulmonary EmphysemaRespiratory MechanicsObserver VariationSpirometryLung NeoplasmsLung ComplianceResidual VolumeLung InjuryPneumonectomyTomography, X-Ray ComputedForced Expiratory Flow RatesLung TransplantationImage Processing, Computer-AssistedOrgan SizeMagnetic Resonance ImagingUltrasonography, PrenatalPulmonary Diffusing CapacityErythrocyte VolumeSensitivity and SpecificityAirway ResistanceEnophthalmosPulmonary Disease, Chronic ObstructiveTidal VolumeCarcinoma, Non-Small-Cell LungHeliumLung Diseases, ObstructiveAsthmaPlasma VolumeProspective StudiesReference ValuesPulmonary Gas ExchangeEmphysemaCardiac VolumeRespirationPulmonary VentilationAcute Lung InjuryOrbital FracturesSerum Albumin, Radio-IodinatedImage Interpretation, Computer-AssistedPulmonary AlveoliMaximal Expiratory Flow RateRadiographic Image Interpretation, Computer-AssistedRespiratory MusclesGestational AgeInhalationUltrasonographySmokingPlethysmographyMaximal Expiratory Flow-Volume CurvesMaximal Midexpiratory Flow RateExhalationTime FactorsDiaphragmAirway ObstructionStroke VolumeAdministration, InhalationPregnancyRespiratory Physiological PhenomenaExpiratory Reserve VolumeAnalysis of VariancePulmonary AtelectasisPressureHernia, DiaphragmaticCystic FibrosisPeak Expiratory Flow RateDyspneaFollow-Up StudiesPulmonary FibrosisLung Diseases, InterstitialInspiratory CapacityPredictive Value of Tests