Blood VolumeCell SizeHypertonic SolutionsSodium-Potassium-Chloride SymportersSolute Carrier Family 12, Member 2BumetanideSodium Potassium Chloride Symporter InhibitorsHypotonic SolutionsOsmotic PressureMagnetic Resonance ImagingOsmosisOsmolar ConcentrationWater-Electrolyte BalanceLung Volume MeasurementsPlasma VolumeHypovolemiaAlkaliesErythrocyte VolumeRubidium RadioisotopesBrainChloridesTime FactorsCerebrovascular CirculationSodiumOrgan SizeImage Processing, Computer-AssistedAmilorideRespiratory MechanicsSodium-Hydrogen AntiporterImaging, Three-DimensionalHematocritPlasma SubstitutesTomography, X-Ray ComputedPotassiumHemodynamicsWaterStroke VolumeFluid ShiftsModels, BiologicalHydrogen-Ion ConcentrationRegional Blood FlowCardiac OutputBiological TransportBlood PressurePulmonary Diffusing CapacityHemorrhageHemodilutionBlood CirculationDye Dilution TechniqueContrast MediaBlood Flow VelocityHemoglobinsIsotonic SolutionsHydroxyethyl Starch DerivativesOxygenSpectroscopy, Near-InfraredShock, HemorrhagicReproducibility of ResultsLongitudinal StudiesKineticsCalciumPerfusion ImagingIndocyanine GreenPulmonary CirculationMagnetic Resonance AngiographyBlood Volume DeterminationDogsOxygen RadioisotopesCells, CulturedVascular CapacitanceGadolinium DTPAOxygen ConsumptionTomography, Emission-ComputedHypotensionFluid TherapyHeart RateThoraxMicrocirculationVascular ResistanceExchange Transfusion, Whole BloodBrain NeoplasmsPlethysmographyImage Interpretation, Computer-AssistedPolygelineCarbon DioxideSensitivity and SpecificityImage EnhancementSplanchnic CirculationCentral Venous PressureIndicator Dilution TechniquesForced Expiratory VolumeAcetazolamideLiver CirculationReference ValuesDiuresisPostureTechnetiumColoring AgentsBrain IschemiaCarbon Monoxide