DipyridamoleDobutamineCardiotonic AgentsEchocardiography, StressExercise TestThallium RadioisotopesEchocardiographyDilazepCoronary CirculationMyocardial ContractionVasodilator AgentsAdenosineCoronary DiseaseHeartTechnetium Tc 99m SestamibiTomography, Emission-Computed, Single-PhotonHemodynamicsAdrenergic beta-AgonistsMyocardial IschemiaThioinosineMyocardial StunningAdrenergic beta-1 Receptor AgonistsVentricular Function, LeftCoronary AngiographyVentricular Dysfunction, LeftSensitivity and SpecificityHydrazonesTomography, Emission-ComputedPredictive Value of TestsElectrocardiographyDogsHeart RateTissue SurvivalEquilibrative-Nucleoside Transporter 2Equilibrative Nucleoside Transporter 1NucleosidesAmrinoneAspirinMilrinoneStroke VolumeNitrogen RadioisotopesMyocardiumMyocardial InfarctionThalliumRadiopharmaceuticalsTheophyllineMyocardial RevascularizationFeasibility StudiesPyridazinesInfusions, IntravenousNucleoside Transport ProteinsPhosphodiesterase InhibitorsEnoximoneAtropinePlatelet Aggregation InhibitorsProspective StudiesCoronary VesselsSulfinpyrazoneBlood PressureDose-Response Relationship, DrugRadionuclide VentriculographyMagnetic Resonance Imaging, CineObserver VariationOrganotechnetium CompoundsBlood Flow VelocityCardiac OutputSympathomimeticsOxygen ConsumptionRubidium RadioisotopesCatecholaminesEchocardiography, DopplerSystoleAngina PectorisPrognosisCoronary Artery DiseaseTime FactorsHyperemiaPropanolaminesFollow-Up StudiesCoronary StenosisHeart Function TestsLidoflazineEquilibrative Nucleoside Transport Proteins2-ChloroadenosineAdrenergic beta-AntagonistsInosine