Lung Volume MeasurementsPlethysmography, Whole BodyLungBlood Volume DeterminationImaging, Three-DimensionalFunctional Residual CapacityReproducibility of ResultsDyspneaBlood VolumeTotal Lung CapacityObserver VariationPulmonary EmphysemaRespiratory MechanicsTomography, X-Ray ComputedLung DiseasesRespiratory Function TestsLung ComplianceResidual VolumeImage Processing, Computer-AssistedPneumonectomyUltrasonography, PrenatalMagnetic Resonance ImagingOrgan SizeErythrocyte VolumeEnophthalmosForced Expiratory VolumeVital CapacityPlasma VolumeSensitivity and SpecificityLung NeoplasmsCardiac VolumeOrbital FracturesSerum Albumin, Radio-IodinatedTidal VolumeImage Interpretation, Computer-AssistedProspective StudiesHeliumSpirometryUltrasonographyLung InjuryReference ValuesRadiographic Image Interpretation, Computer-AssistedGestational AgeStroke VolumeAirway ResistanceTime FactorsRespirationDiaphragmRespiratory SoundsPulmonary Diffusing CapacityInhalationEmphysemaExpiratory Reserve VolumePulmonary Gas ExchangeAsthma