Ventricular Function, LeftVentricular Function, RightVentricular FunctionStroke VolumeVentricular Dysfunction, LeftVentricular Dysfunction, RightEchocardiographyHeart VentriclesHeartMyocardial ContractionMyocardial InfarctionSystoleHemodynamicsRadionuclide VentriculographyEchocardiography, DopplerDiastoleRadionuclide AngiographyElectrocardiographyGated Blood-Pool ImagingHeart FailureMyocardiumRisk AssessmentTime FactorsHeart Function TestsTreatment OutcomeCoronary CirculationCardiac CatheterizationProspective StudiesFollow-Up StudiesEchocardiography, Doppler, PulsedCardiomyopathy, DilatedCoronary DiseaseReproducibility of ResultsVentriculography, First-PassCineangiographyHeart RatePredictive Value of TestsCardiac VolumeVentricular PressureCardiomyopathiesHypertrophy, Right VentricularHuman RightsMyocardial IschemiaCardiac OutputExercise TestVentricular RemodelingDobutamineAngiocardiographyBlood PressureVentricular DysfunctionMagnetic Resonance ImagingMagnetic Resonance Imaging, CineTomography, Emission-Computed, Single-PhotonMitral Valve InsufficiencyCoronary AngiographyCardiotonic AgentsCardiac Pacing, ArtificialEchocardiography, Doppler, ColorCoronary Artery BypassObserver VariationGold RadioisotopesPhonocardiographySeverity of Illness IndexDogsPulmonary ArteryRecovery of FunctionHeart DiseasesMyocardial ReperfusionAtrial Function, RightPrognosisTetralogy of FallotTricuspid ValveMitral ValveSensitivity and SpecificityTechnetium Tc 99m SestamibiAortic Valve StenosisAngioplasty, Balloon, CoronaryAngina PectorisHypertension, PulmonaryMyocardial Reperfusion InjuryAdrenergic beta-AntagonistsAnalysis of VarianceEchocardiography, StressCoronary VesselsRetrospective StudiesCardiac Surgical ProceduresHeart AtriaVentricular SeptumDisease Models, AnimalCineradiographyStreptokinaseNatriuretic Peptide, BrainChronic DiseaseHeart Defects, CongenitalFeasibility StudiesPulmonary Valve InsufficiencyArrhythmias, CardiacKinetocardiographyRisk FactorsTransposition of Great Vessels