Radionuclide VentriculographyVentriculography, First-PassGated Blood-Pool ImagingStroke VolumeRadionuclide AngiographyCerebral VentriculographySodium Pertechnetate Tc 99mPrenalterolHeart VentriclesTechnetiumVentricular Function, LeftHeartHeart AneurysmVentricular Dysfunction, LeftRadionuclide ImagingCardiac VolumeExercise TestRadioisotopesEchocardiographyCoronary DiseaseElectrocardiographyMyocardial InfarctionThallium RadioisotopesAngiocardiographyTomography, Emission-Computed, Single-PhotonCardiac OutputPhysical ExertionMyocardial ContractionCineangiographyCardiomyopathy, DilatedVentricular Function, RightElectrocardiography, AmbulatoryHemodynamicsRadionuclide GeneratorsPacemaker, ArtificialProspective StudiesHeart RateCesium RadioisotopesWater Pollutants, RadioactiveHeart FailureAdrenergic beta-AntagonistsThalliumStrontium RadioisotopesPrognosisTakotsubo CardiomyopathyRadiopharmaceuticalsFollow-Up StudiesTechnetium Tc 99m PyrophosphateBlood PressureSensitivity and SpecificityIothalamate MeglumineTime FactorsSoil Pollutants, RadioactiveDiatrizoatePredictive Value of TestsIodine RadioisotopesCardiac CatheterizationTechnology, RadiologicIopamidolRadiometryRadioactivityIothalamic AcidCoronary AngiographyRheniumIodobenzenesTreatment OutcomeAlpha ParticlesHeart Function TestsPlutoniumPentetic AcidRadioimmunotherapyTechnetium Tc 99m SestamibiHeart DiseasesFood Contamination, RadioactiveIndium Radioisotopes