Myocardial Perfusion ImagingTomography, Emission-Computed, Single-PhotonCoronary CirculationPerfusionTechnetium Tc 99m SestamibiThallium RadioisotopesOrganotechnetium CompoundsDipyridamoleRadiopharmaceuticalsCardiac-Gated Single-Photon Emission Computer-Assisted TomographyHeartPerfusion ImagingGated Blood-Pool ImagingExercise TestMyocardial IschemiaRubidium RadioisotopesCoronary AngiographyThalliumCoronary Artery DiseaseOrganophosphorus CompoundsNitrogen RadioisotopesCoronary DiseaseAdenosineContrast MediaMyocardial ReperfusionSensitivity and SpecificityTomography, Emission-ComputedVasodilator AgentsArtifactsCoronary VesselsFractional Flow Reserve, MyocardialMyocardial InfarctionVentriculography, First-PassReproducibility of ResultsImage Interpretation, Computer-AssistedImage EnhancementPredictive Value of TestsVentricular Function, LeftElectrocardiographyEchocardiographyPositron-Emission TomographyCoronary StenosisVentricular Dysfunction, LeftImage Processing, Computer-AssistedMyocardiumMicrocirculationDiatrizoate MeglumineEchocardiography, StressDobutamineAngina PectorisGadolinium DTPAFeasibility StudiesRadioisotopesStroke VolumeMagnetic Resonance AngiographyDogsTomography, X-Ray ComputedHyperemiaTissue SurvivalHemodynamicsRegional Blood FlowRadionuclide AngiographyTelluriumMicrospheresTime FactorsRestGamma CamerasMagnetic Resonance ImagingRadionuclide ImagingOximesBlood Flow VelocityMagnetic Resonance Imaging, CineMyocardial RevascularizationAmmoniaSubtraction TechniqueNuclear MedicineObserver VariationCollateral CirculationPrognosisOxygen RadioisotopesTechnetiumHeart DiseasesMicrovascular AnginaChest PainFluorocarbonsDiatrizoateProspective StudiesAngioplasty, Balloon, CoronarySeverity of Illness IndexPhantoms, ImagingMyocardial StunningMyocardial ContractionIodobenzenesRisk AssessmentAlgorithmsROC CurveNuclear Medicine Department, HospitalFluorine RadioisotopesChemotherapy, Cancer, Regional PerfusionCardiac-Gated Imaging Techniques