Myocardial Perfusion ImagingTomography, Emission-Computed, Single-PhotonCoronary CirculationPerfusionTechnetium Tc 99m SestamibiThallium RadioisotopesOrganotechnetium CompoundsDipyridamoleRadiopharmaceuticalsHeartCardiac-Gated Single-Photon Emission Computer-Assisted TomographyPerfusion ImagingExercise TestGated Blood-Pool ImagingMyocardial IschemiaRubidium RadioisotopesCoronary AngiographyCoronary Artery DiseaseThalliumOrganophosphorus CompoundsNitrogen RadioisotopesCoronary DiseaseAdenosineContrast MediaSensitivity and SpecificityReproducibility of ResultsMyocardial ReperfusionTomography, Emission-ComputedArtifactsVasodilator AgentsPredictive Value of TestsMyocardial InfarctionCoronary VesselsFractional Flow Reserve, MyocardialImage Interpretation, Computer-AssistedVentriculography, First-PassImage EnhancementRisk AssessmentVentricular Function, LeftEchocardiographyElectrocardiographyPositron-Emission TomographyImage Processing, Computer-AssistedCoronary StenosisVentricular Dysfunction, LeftMyocardiumFeasibility StudiesMicrocirculationEchocardiography, StressDobutamineDiatrizoate MeglumineAngina PectorisGadolinium DTPATime FactorsTomography, X-Ray ComputedRadioisotopesStroke VolumeObserver VariationMagnetic Resonance AngiographyMagnetic Resonance ImagingDogsProspective StudiesTissue SurvivalHyperemiaSeverity of Illness IndexHemodynamicsRegional Blood FlowRadionuclide AngiographyPrognosisMicrospheresBlood Flow VelocityRestGamma CamerasTelluriumRadionuclide ImagingMagnetic Resonance Imaging, CineOximesSubtraction TechniqueMyocardial RevascularizationAmmoniaHeart DiseasesNuclear MedicineTechnetiumCollateral CirculationOxygen RadioisotopesChest PainAlgorithmsFluorocarbonsMicrovascular AnginaROC CurveDiatrizoateAngioplasty, Balloon, CoronaryPhantoms, ImagingMyocardial ContractionFollow-Up StudiesTreatment OutcomeMyocardial StunningIodobenzenesFluorine RadioisotopesRisk Factors