EchocardiographyCardiologyEchocardiography, TransesophagealEchocardiography, Three-DimensionalEchocardiography, DopplerEchocardiography, StressEchocardiography, Doppler, ColorEchocardiography, Doppler, PulsedCardiology Service, HospitalDobutamineHeart DiseasesVentricular Function, LeftVentricular Dysfunction, LeftMitral ValveHeart VentriclesStroke VolumeHeart Defects, CongenitalMitral Valve InsufficiencyCardiac CatheterizationElectrocardiographyHeart Valve DiseasesPredictive Value of TestsHeart Septal Defects, AtrialHeart AtriaExercise TestDiastoleObserver VariationSensitivity and SpecificitySocieties, MedicalSystoleProspective StudiesMyocardial ContractionHeart FailureHeart NeoplasmsMyocardial InfarctionCardiotonic AgentsAortic ValveFetal HeartContrast MediaFeasibility StudiesCoronary DiseaseCoronary CirculationHeart Valve ProsthesisHeartEchocardiography, Four-DimensionalHemodynamicsCardiac Imaging TechniquesHeart MurmursCoronary AngiographyMyocardial IschemiaBlood Flow VelocityHypertrophy, Left VentricularAortic Valve StenosisCardiomyopathiesHeart SeptumReproducibility of ResultsAmerican Heart AssociationTricuspid Valve InsufficiencyAortic Valve InsufficiencyTreatment OutcomeTricuspid ValveDipyridamoleCardiac Surgical ProceduresFollow-Up StudiesMitral Valve ProlapseMitral Valve StenosisHeart Valve Prosthesis ImplantationAtrial Function, LeftCardiac VolumeVentricular RemodelingTime FactorsVentricular Function, RightCardiomyopathy, HypertrophicPericardial EffusionVentricular Dysfunction, RightHeart Function TestsMyocardiumHeart Septal Defects, VentricularCardiomyopathy, DilatedEmbolismRetrospective StudiesCoronary Artery DiseaseNuclear Medicine Department, HospitalTomography, Emission-Computed, Single-PhotonRisk AssessmentCardiac Care FacilitiesPrognosisEndocarditisMyxomaSeverity of Illness IndexHeart AneurysmHypertension, PulmonaryRisk FactorsAtrial AppendageUltrasonography, PrenatalAtrial FibrillationThrombosisFluorocarbonsNuclear MedicineVentricular Dysfunction