Torsion AbnormalityEchocardiographySpermatic Cord TorsionTorsion, MechanicalEchocardiography, TransesophagealEchocardiography, Three-DimensionalEchocardiography, DopplerEchocardiography, StressEchocardiography, Doppler, ColorEchocardiography, Doppler, PulsedDobutamineVentricular Function, LeftVentricular Dysfunction, LeftHeart VentriclesDystonia Musculorum DeformansMitral ValveStroke VolumeHeart DiseasesMitral Valve InsufficiencyDiastoleHeart AtriaMyocardial ContractionObserver VariationSystolePredictive Value of TestsHeart Septal Defects, AtrialSensitivity and SpecificityElectrocardiographyHeart Defects, CongenitalHeart Valve DiseasesExercise TestCardiac CatheterizationOvarian DiseasesHeart NeoplasmsProspective StudiesAortic ValveCardiotonic AgentsContrast MediaReproducibility of ResultsHypertrophy, Left VentricularFetal HeartHemodynamicsBlood Flow VelocityFeasibility StudiesHeartEchocardiography, Four-DimensionalCoronary CirculationHeart SeptumHeart Valve ProsthesisTricuspid Valve InsufficiencyAortic Valve InsufficiencyCardiomyopathiesTricuspid ValveVentricular RemodelingAortic Valve StenosisMitral Valve ProlapseMagnetic Resonance ImagingMyocardial InfarctionRotationHeart FailureDipyridamoleFollow-Up StudiesMitral Valve StenosisMyocardial IschemiaAtrial Function, LeftCardiac VolumeMagnetic Resonance Imaging, CineTime FactorsVentricular Function, RightMyocardiumVentricular Dysfunction, RightPericardial EffusionCoronary DiseaseCardiomyopathy, DilatedCoronary AngiographyCardiomyopathy, HypertrophicHeart Valve Prosthesis ImplantationTreatment OutcomeUltrasonography, PrenatalHeart MurmursHeart Septal Defects, VentricularAbnormalities, MultipleScrotumHeart AneurysmRetrospective StudiesMyxomaEmbolismCardiac Surgical ProceduresPrognosisTomography, X-Ray ComputedAtrial Appendage