EchocardiographyEchocardiography, TransesophagealEchocardiography, Three-DimensionalEchocardiography, DopplerEchocardiography, Doppler, ColorUltrasonography, DopplerEchocardiography, StressEchocardiography, Doppler, PulsedUltrasonography, Doppler, ColorDoppler EffectUltrasonography, Doppler, PulsedBlood Flow VelocityDobutamineVentricular Function, LeftVentricular Dysfunction, LeftMitral ValveUltrasonography, Doppler, TranscranialStroke VolumeVentricular Function, RightHeart VentriclesDiastoleHeart AtriaVentricular Dysfunction, RightSensitivity and SpecificitySystoleHeart DiseasesObserver VariationCardiac CatheterizationPredictive Value of TestsHeart Septal Defects, AtrialMitral Valve InsufficiencyProspective StudiesMyocardial ContractionHemodynamicsElectrocardiographyHeart Defects, CongenitalUltrasonography, PrenatalHeart Valve DiseasesFetal HeartReproducibility of ResultsCoronary CirculationTricuspid Valve InsufficiencyContrast MediaHeart NeoplasmsAortic ValveExercise TestFeasibility StudiesHeart SeptumCardiotonic AgentsEchocardiography, Four-DimensionalHeart Valve ProsthesisAortic Valve StenosisTricuspid ValveHeartLaser-Doppler FlowmetryAtrial Function, LeftHeart FailureCardiomyopathiesHypertrophy, Left VentricularCardiac VolumeMitral Valve StenosisPulmonary ArteryAtrial Function, RightFollow-Up StudiesMyocardial InfarctionPulsatile FlowHeart Septal Defects, VentricularAortic Valve InsufficiencyHypertension, PulmonaryVentricular RemodelingMyocardial IschemiaDipyridamoleMitral Valve ProlapseCoronary AngiographyTime FactorsHeart MurmursCardiomyopathy, HypertrophicCoronary DiseaseTreatment OutcomeBlood PressureRegional Blood FlowPericardial EffusionMyocardiumUltrasonographyCardiomyopathy, DilatedHuman RightsCardiac Surgical ProceduresHeart Valve Prosthesis ImplantationMagnetic Resonance ImagingUmbilical ArteriesPregnancyHeart AneurysmMyxomaHeart Function TestsAtrial AppendageFluorocarbonsSeverity of Illness IndexCardiac OutputPhonocardiographyImage Interpretation, Computer-Assisted