Lung Volume MeasurementsPlethysmography, Whole BodyLungLung DiseasesTotal Lung CapacityRespiratory Function TestsVital CapacityLung Diseases, InterstitialBlood Volume DeterminationLung Diseases, ObstructiveSpirometryForced Expiratory VolumeImaging, Three-DimensionalRespiratory InsufficiencyFunctional Residual CapacityReproducibility of ResultsDyspneaBlood VolumeObserver VariationPulmonary EmphysemaRespiratory MechanicsLung ComplianceResidual VolumeImage Processing, Computer-AssistedPneumonectomyUltrasonography, PrenatalMagnetic Resonance ImagingOrgan SizeTomography, X-Ray ComputedErythrocyte VolumeEnophthalmosPlasma VolumeSensitivity and SpecificityCardiac VolumeOrbital FracturesLung NeoplasmsSerum Albumin, Radio-IodinatedTidal VolumeImage Interpretation, Computer-AssistedHeliumUltrasonographyLung InjuryReference ValuesRadiographic Image Interpretation, Computer-AssistedGestational AgeProspective StudiesStroke VolumeAirway ResistanceRespirationDiaphragmPulmonary Diffusing CapacityInhalationEmphysemaExpiratory Reserve VolumePulmonary Gas Exchange