Technetium Tc 99m SestamibiParathyroidectomyHyperparathyroidism, PrimaryParathyroid NeoplasmsTomography, Emission-Computed, Single-PhotonThallium RadioisotopesRadiopharmaceuticalsDipyridamoleOrganotechnetium CompoundsTissue SurvivalVentriculography, First-PassGated Blood-Pool ImagingHeartSensitivity and SpecificityThyroiditis, SubacuteExercise TestCoronary DiseaseCoronary CirculationChest PainDobutamineMyocardial InfarctionMyocardial Perfusion ImagingOrganophosphorus CompoundsSodium Pertechnetate Tc 99mPredictive Value of TestsHyperparathyroidismElectrocardiographyCoronary AngiographyReproducibility of ResultsVasodilator AgentsTomography, Emission-ComputedMyocardial RevascularizationGamma CamerasAdenosineEchocardiographyParathyroid GlandsVentricular Function, LeftMyocardial IschemiaVentricular Dysfunction, LeftObserver VariationMyocardial ContractionThalliumMyocardiumProspective StudiesCoronary Artery DiseaseIodobenzenesMyocardial StunningOximesPrognosis