Chromatography, High Pressure LiquidBlood VolumeIonic LiquidsChromatography, LiquidLiquid CrystalsPlasma VolumeStroke VolumeLung Volume MeasurementsErythrocyte VolumeBlood Volume DeterminationMagnetic Resonance ImagingForced Expiratory VolumeReproducibility of ResultsImaging, Three-DimensionalTandem Mass SpectrometryOrgan SizeTime FactorsLiquid VentilationMass SpectrometryResidual VolumeImage Processing, Computer-AssistedSensitivity and SpecificityBrainCell SizeSpectrometry, Mass, Electrospray IonizationWaterPressureCalibrationLungTomography, X-Ray ComputedReference ValuesBody FluidsAtrophyRespiratory MechanicsDogsHemodynamicsReference StandardsSpectrophotometry, UltravioletImage Interpretation, Computer-AssistedTreatment OutcomeCardiac OutputProspective StudiesPlasma SubstitutesOsmolar ConcentrationIsotonic SolutionsWater-Electrolyte BalanceModels, BiologicalChromatography, Reverse-PhaseAlgorithmsAnalysis of VarianceBlood PressureHematocritRespiratory Function TestsRats, Sprague-DawleyRespirationHypotonic SolutionsTemperatureHydrogen-Ion ConcentrationKineticsLimit of DetectionObserver VariationLinear ModelsSodium ChlorideFunctional Residual CapacityHypovolemiaVital CapacityCulture MediaSolutionsFluid TherapyGas Chromatography-Mass SpectrometryDrug StabilityEquipment DesignFluorocarbonsSolid Phase ExtractionLung ComplianceVentricular Function, LeftOxygenHalf-LifeDisease Models, AnimalBody WaterEchocardiography, Three-DimensionalSolventsClosing VolumeMagnetic Resonance SpectroscopyDose-Response Relationship, DrugSwineRespiration, ArtificialPregnancyPredictive Value of TestsRadiotherapy Planning, Computer-AssistedHeart VentriclesOsmosisSodiumViscosityRetrospective StudiesTumor BurdenCarbon DioxideIndicators and ReagentsRats, WistarImage Enhancement