EchocardiographyEchocardiography, TransesophagealEchocardiography, Three-DimensionalEchocardiography, DopplerEchocardiography, Doppler, ColorEchocardiography, StressEchocardiography, Doppler, PulsedHeart Septal Defects, AtrialHeart NeoplasmsHeart AtriaMitral ValveVentricular Function, LeftHeart DiseasesVentricular Dysfunction, LeftDobutamineHeart VentriclesMitral Valve InsufficiencyHeart Valve DiseasesStroke VolumeAortic ValveAtrial Function, LeftMyxomaHeart Valve ProsthesisObserver VariationCardiac CatheterizationSystoleAortic Valve InsufficiencyPredictive Value of TestsDiastoleSensitivity and SpecificityAortic Valve StenosisProspective StudiesElectrocardiographyMitral Valve StenosisPericardial EffusionBlood Flow VelocityHeart Valve Prosthesis ImplantationCoronary CirculationFeasibility StudiesEndocarditisTricuspid Valve InsufficiencyHemodynamicsForamen Ovale, PatentHeart Defects, CongenitalCineradiographyCardiac Surgical ProceduresHeart SeptumTricuspid ValveHypertrophy, Left VentricularReproducibility of ResultsMyocardial ContractionContrast MediaAtrial AppendageCardiomyopathiesThrombosisThoraxVentricular Function, RightExercise TestVentricular Dysfunction, RightCoronary AngiographyEmbolismHeart InjuriesCardiac TamponadeEndocarditis, BacterialMyocardial InfarctionHeart AneurysmTreatment OutcomeSeptal Occluder DeviceHeart FailureVentricular RemodelingHeart Septal Defects, VentricularPulmonary EmbolismCardiomyopathy, HypertrophicAtrial FibrillationCor TriatriatumEmbolism, ParadoxicalFollow-Up StudiesCardiotonic AgentsHeartHypertension, PulmonaryPulmonary VeinsMyocardial IschemiaMagnetic Resonance Imaging, CinePulmonary ArteryCardiomyopathy, DilatedMitral Valve ProlapseFetal HeartEchocardiography, Four-DimensionalTomography, X-Ray ComputedTime FactorsSeverity of Illness IndexMyocardiumHeart ValvesIntraoperative CareHeart Function TestsCoronary DiseasePulmonary Wedge PressureVascular FistulaCardiac VolumeSinus of Valsalva