SystoleDiastoleMyocardial ContractionHeart VentriclesModels, CardiovascularMitral ValveEchocardiographyBlood Flow VelocityVentricular Function, LeftVentricular FunctionKinetocardiographyHeartCardiac VolumeEchocardiography, DopplerEchocardiography, Three-DimensionalModels, AnatomicAtrial Function, LeftMitral Valve InsufficiencyMitral Valve ProlapseComputer SimulationDogsStress, MechanicalCardiac-Gated Imaging TechniquesFinite Element AnalysisStroke VolumeImaging, Three-DimensionalHemodynamicsHeart AuscultationCoronary CirculationTorsion, MechanicalElasticityBlood PressureBiomechanical PhenomenaImage Processing, Computer-AssistedVentricular Function, RightEchocardiography, Doppler, ColorModels, MolecularElectrocardiographyHeart SoundsAtrial FunctionReproducibility of ResultsHeart RateEchocardiography, Doppler, PulsedPulsatile FlowVentricular Dysfunction, LeftModels, BiologicalHeart SeptumAlgorithmsPulseHeart AtriaHypertrophy, Left VentricularTricuspid ValveVentricular PressureRheologyTime FactorsPericardiumImage Interpretation, Computer-AssistedCardiac CatheterizationCardiomyopathy, HypertrophicMyocardial BridgingAortic ValveMyocardiumHeart Function TestsDuctus ArteriosusPressureVentricular RemodelingHeart MurmursMagnetic Resonance ImagingFetal HeartCineangiographyPapillary MusclesRegional Blood FlowCardiac OutputObserver VariationCrystallography, X-RayAortic Valve StenosisImage EnhancementModels, TheoreticalTricuspid Valve InsufficiencyCoronary VesselsMagnetic Resonance Imaging, CineReference ValuesAmyl NitriteHydrogen BondingPulmonary CirculationEndocardiumProtein ConformationHeart Valve ProsthesisQuantum TheoryEquipment DesignHeart BlockDoppler EffectEchocardiography, TransesophagealElasticity Imaging TechniquesModels, ChemicalPhantoms, ImagingMagnetic Resonance SpectroscopyMolecular ConformationSheepHeart Diseases