MyocardiumPerfusionPerfusion ImagingMyocardial Perfusion ImagingHeartMyocardial StunningCoronary CirculationMyocardial ContractionTomography, Emission-Computed, Single-PhotonMyocardial IschemiaDogsMyocardial InfarctionHeart VentriclesChemotherapy, Cancer, Regional PerfusionMyocardial Reperfusion InjuryOrganotechnetium CompoundsTechnetium Tc 99m SestamibiMyocardial ReperfusionContrast MediaHemodynamicsMyocytes, CardiacRegional Blood FlowTime FactorsCoronary VesselsThallium RadioisotopesRadiopharmaceuticalsCerebrovascular CirculationVentricular Function, LeftTissue SurvivalCoronary DiseaseCardiotonic AgentsSwineEchocardiographyTomography, Emission-ComputedRats, Sprague-DawleyCardiomyopathiesMagnetic Resonance ImagingMicrocirculationNitrogen RadioisotopesPericardiumDobutamineDisease Models, AnimalVentricular RemodelingGadolinium DTPAVentricular FunctionDipyridamoleBlood Flow VelocityRats, WistarVentricular Dysfunction, LeftMagnetic Resonance AngiographyAdenosineCollateral CirculationIodobenzenesBlood PressureElectrocardiographyMicrospheresCardiomegalyVentilation-Perfusion RatioRabbitsModels, CardiovascularOximesLaser-Doppler FlowmetrySensitivity and SpecificityImage Processing, Computer-AssistedHeart AtriaCardiomyopathy, DilatedIschemic Preconditioning, MyocardialThalliumMagnetic Resonance Imaging, CineReproducibility of ResultsHeart FailureBlood VolumeImage EnhancementCoronary AngiographyOxygen ConsumptionCalciumVasodilator AgentsGated Blood-Pool ImagingHeart RateIsolated Noncompaction of the Ventricular MyocardiumCapillariesExercise TestMyocarditisTomography, X-Ray ComputedTechnetiumHeart Arrest, InducedImage Interpretation, Computer-AssistedCreatine KinaseOxygenIschemiaStroke VolumeHeart Conduction SystemNeovascularization, PhysiologicMyocardial RevascularizationPressurePredictive Value of TestsOrganophosphorus CompoundsMitochondria, HeartNecrosisModels, Animal