Echocardiography, Three-DimensionalEchocardiographyEchocardiography, TransesophagealEchocardiography, DopplerEchocardiography, Doppler, ColorEchocardiography, StressEchocardiography, Four-DimensionalMitral ValveVentricular Function, LeftVentricular Dysfunction, LeftHeart VentriclesStroke VolumeMitral Valve InsufficiencyEchocardiography, Doppler, PulsedObserver VariationDobutamineHeart DiseasesFeasibility StudiesReproducibility of ResultsComputer SystemsSystoleSensitivity and SpecificityImage Interpretation, Computer-AssistedVentricular Function, RightPredictive Value of TestsMyocardial ContractionVentricular RemodelingProspective StudiesHeart FailureHeart AtriaHeart Septal Defects, AtrialMyocardial IschemiaHeart Valve DiseasesDiastoleMyocardial InfarctionCardiac CatheterizationElectrocardiographyHeart Defects, CongenitalHeart NeoplasmsExercise TestAortic ValveCardiotonic AgentsImage Processing, Computer-AssistedContrast MediaFetal HeartHypertrophy, Left VentricularHeart SeptumHemodynamicsBlood Flow VelocityCoronary CirculationHeart Valve ProsthesisTricuspid Valve InsufficiencyMagnetic Resonance ImagingAortic Valve InsufficiencyHeartTricuspid ValveAortic Valve StenosisMitral Valve ProlapseCardiomyopathiesMitral Valve StenosisAtrial Function, LeftDipyridamoleCardiac VolumePericardial EffusionVentricular Dysfunction, RightCoronary AngiographyCoronary DiseaseHeart Valve Prosthesis ImplantationTime FactorsCardiomyopathy, HypertrophicFollow-Up StudiesMyocardiumHeart MurmursHeart Septal Defects, VentricularMyxomaCardiomyopathy, DilatedEmbolismHeart AneurysmCardiac Surgical ProceduresAtrial AppendageFluorocarbonsHypertension, PulmonaryTreatment OutcomeUltrasonography, PrenatalHeart Function TestsEndocarditisPulmonary ArteryForamen Ovale, PatentPrognosisThrombosisSeverity of Illness IndexTomography, Emission-Computed, Single-PhotonMyocardial StunningVentricular DysfunctionPhonocardiographyNatriuretic Peptide, BrainChordae TendineaeAtrial FibrillationTissue SurvivalIntraoperative Care