EchocardiographyEchocardiography, TransesophagealEchocardiography, Three-DimensionalEchocardiography, DopplerEchocardiography, Doppler, ColorUltrasonography, DopplerEchocardiography, StressEchocardiography, Doppler, PulsedUltrasonography, Doppler, ColorDoppler EffectUltrasonography, Doppler, PulsedBlood Flow VelocityDobutamineVentricular Function, LeftMitral ValveVentricular Dysfunction, LeftUltrasonography, Doppler, TranscranialHeart VentriclesStroke VolumeDiastoleSensitivity and SpecificityObserver VariationPredictive Value of TestsHeart DiseasesSystoleCardiac CatheterizationProspective StudiesMitral Valve InsufficiencyHeart AtriaHeart Septal Defects, AtrialReproducibility of ResultsHeart Valve DiseasesUltrasonography, PrenatalMyocardial ContractionHemodynamicsHeart Defects, CongenitalFetal HeartElectrocardiographyCoronary CirculationContrast MediaAortic ValveFeasibility StudiesExercise TestTricuspid Valve InsufficiencyHeart NeoplasmsCardiotonic AgentsHeart SeptumHeart Valve ProsthesisAortic Valve StenosisTricuspid ValveEchocardiography, Four-DimensionalLaser-Doppler FlowmetryVentricular Function, RightTreatment OutcomeFollow-Up StudiesTime FactorsAtrial Function, LeftHeartHypertrophy, Left VentricularMitral Valve StenosisCardiomyopathiesHeart FailureMyocardial InfarctionCardiac Surgical ProceduresAortic Valve InsufficiencyVentricular Dysfunction, RightCardiac VolumePulsatile FlowDipyridamoleMitral Valve ProlapseMyocardial IschemiaCoronary AngiographyVentricular RemodelingCoronary DiseaseHeart MurmursRetrospective StudiesPericardial EffusionCardiomyopathy, HypertrophicHeart Septal Defects, VentricularUltrasonographyHeart Valve Prosthesis ImplantationPulmonary ArteryRegional Blood FlowPregnancyBlood PressureCardiomyopathy, DilatedUmbilical ArteriesMyocardiumSeverity of Illness IndexFluorocarbonsHypertension, PulmonaryCardiac OutputHeart Function TestsHeart AneurysmMonitoring, IntraoperativeAtrial AppendagePulmonary VeinsEmbolismPrognosisImage Interpretation, Computer-Assisted