SystoleDiastoleMyocardial ContractionMitral ValveHeart VentriclesKinetocardiographyEchocardiographyBlood Flow VelocityVentricular Function, LeftVentricular FunctionHeartCardiac VolumeEchocardiography, DopplerModels, CardiovascularAtrial Function, LeftMitral Valve ProlapseCardiac-Gated Imaging TechniquesEchocardiography, Three-DimensionalHeart AuscultationMitral Valve InsufficiencyDogsStroke VolumeCoronary CirculationHemodynamicsEchocardiography, Doppler, ColorHeart SoundsAtrial FunctionBlood PressureElectrocardiographyEchocardiography, Doppler, PulsedTorsion, MechanicalVentricular Function, RightHeart RatePulseVentricular PressureHeart SeptumCardiomyopathy, HypertrophicMyocardial BridgingTricuspid ValveHeart AtriaDuctus ArteriosusCardiac CatheterizationPulsatile FlowHeart MurmursVentricular Dysfunction, LeftElasticityFetal HeartCineangiographyPericardiumAortic ValveMyocardiumHeart Function TestsCardiac OutputStress, MechanicalAmyl NitriteImage Processing, Computer-AssistedRegional Blood FlowHeart BlockPapillary MusclesDoppler EffectTime FactorsObserver VariationMagnetic Resonance Imaging, CinePulmonary CirculationHeart DiseasesTricuspid Valve InsufficiencyReproducibility of ResultsCoronary VesselsEndocardiumReference ValuesAortic Valve StenosisElasticity Imaging TechniquesEchocardiography, TransesophagealMagnetic Resonance ImagingCardiac Pacing, ArtificialUltrasonography, DopplerRheologyAortaCounterpulsationMitral Valve StenosisPulmonary ArteryImaging, Three-DimensionalMitral Valve AnnuloplastyPressureSheepImage Interpretation, Computer-AssistedHeart Valve ProsthesisCardiomyopathy, DilatedDobutamineModels, AnatomicPulmonary VeinsTetralogy of FallotBlood VolumePacemaker, ArtificialUltrasonography, PrenatalBiomechanical PhenomenaHypertrophy, Left VentricularMyocardial IschemiaArrhythmias, CardiacImage Enhancement