Cardiac VolumeEchocardiography, Four-DimensionalFetal HeartStroke VolumeHeartEchocardiography, Three-DimensionalCardiac OutputVentricular Function, LeftHeart VentriclesVentricular RemodelingPulmonary Valve InsufficiencyBlood VolumeDiastoleMagnetic Resonance Imaging, CineEchocardiographyMyocardial ContractionSystoleVentricular Dysfunction, LeftMyocytes, CardiacHemodynamicsMagnetic Resonance ImagingHeart RateMyocardial InfarctionBlood PressureMyocardiumHeart FailureTime FactorsPlasma VolumeLung Volume MeasurementsCardiac Surgical ProceduresArrhythmias, CardiacDeath, Sudden, CardiacErythrocyte VolumeBlood Volume Determination