DiastoleSystoleMyocardial ContractionHeart VentriclesMitral ValveVentricular Function, LeftBlood Flow VelocityEchocardiographyEchocardiography, DopplerVentricular FunctionHeartCardiac VolumeModels, CardiovascularKinetocardiographyDogsCoronary CirculationHeart AuscultationCardiac-Gated Imaging TechniquesEchocardiography, Doppler, ColorStroke VolumeAtrial Function, LeftEchocardiography, Doppler, PulsedHemodynamicsBlood PressureMitral Valve InsufficiencyTorsion, MechanicalVentricular PressureVentricular Dysfunction, LeftVentricular Function, RightHeart RateHeart SoundsHeart SeptumEchocardiography, Three-DimensionalAtrial FunctionElasticityElectrocardiographyPericardiumFetal HeartMyocardial BridgingMyocardiumHeart AtriaPulsatile FlowEndocardiumDuctus ArteriosusCardiac CatheterizationMitral Valve ProlapseHeart DiseasesPulseMagnetic Resonance Imaging, CineCardiomyopathy, HypertrophicAortic ValveCoronary VesselsTricuspid ValveTime FactorsCineangiographyPapillary MusclesCardiac OutputStress, MechanicalAortic Valve InsufficiencyRegional Blood FlowPhonocardiographyMitral Valve StenosisCardiac Pacing, ArtificialImage Processing, Computer-AssistedHypertrophy, Left VentricularReproducibility of ResultsReference ValuesObserver VariationCardiomyopathy, DilatedTricuspid Valve InsufficiencyPulmonary CirculationElasticity Imaging TechniquesEchocardiography, TransesophagealAortaPressureSheepImage Interpretation, Computer-AssistedMagnetic Resonance ImagingHeart FailureHeart Valve ProsthesisPulmonary ArteryUltrasonography, DopplerVascular ResistanceTetralogy of FallotUltrasonography, PrenatalBlood VolumeAortic Valve StenosisBiomechanical PhenomenaPerfusionHeart MurmursDobutamineCardiomegalyMyocardial IschemiaCardiomyopathiesArteriesImaging, Three-DimensionalProspective StudiesMyocytes, CardiacArrhythmias, CardiacCardiomyopathy, Restrictive