Lung Volume MeasurementsPlethysmography, Whole BodyPlethysmographyLungPlethysmography, ImpedanceBlood Volume DeterminationFunctional Residual CapacityImaging, Three-DimensionalTotal Lung CapacityReproducibility of ResultsBlood VolumeForearmRespiratory MechanicsObserver VariationPulmonary EmphysemaResidual VolumeLung ComplianceRespiratory Function TestsLung DiseasesTidal VolumeImage Processing, Computer-AssistedAirway ResistancePneumonectomyOrgan SizeUltrasonography, PrenatalMagnetic Resonance ImagingTomography, X-Ray ComputedRespirationErythrocyte VolumeRegional Blood FlowSensitivity and SpecificityEnophthalmosVital CapacityHeliumForced Expiratory VolumePlasma VolumeThoraxReference ValuesCardiac VolumeOrbital FracturesLung NeoplasmsSerum Albumin, Radio-IodinatedInhalationPulmonary VentilationImage Interpretation, Computer-AssistedDiaphragmSpirometryProspective StudiesRespiratory MusclesUltrasonographyLung InjuryPulmonary Diffusing CapacityThoracic WallStroke VolumeRadiographic Image Interpretation, Computer-AssistedPressureGestational AgeForced Expiratory Flow RatesPulmonary Gas ExchangeAnalysis of VarianceTime FactorsPregnancyEmphysemaExpiratory Reserve VolumeMethacholine Chloride