Magnetic resonance imaging for the assessment of aortic regurgitation severity and left ventricular remodelling (dilatation and dysfunction). A 72-year-old asymptomatic female patient with trileaflet aortic valve and echocardiogram showing moderate aortic regurgitation. (A) Breath-held short-axis stack cine acquisition for calculation of left ventricular volumes, ejection fraction, stroke volume, and left ventricular mass. There is moderate left ventricular dilatation (LVEDVi 112 mL/m²) despite a basal LVEDd measurement of 5.3 cm, vs. mid-left ventricular cavity (6.2 cm) correlates better with the volumetric mild left ventricular dilatation; left ventricular mass, wall thickness and LVEF (62%) are preserved. However in (B), global longitudinal strain is impaired = −16.5% (see the strain curve displayed in the upper panel and the myocardial overlay of the feature-tracking post-processing analysis in the lower panel). (C) 2D phase-contrast through-plane acquisition at the level of the ST junction for forward and backward flow and volume calculation. (D) Red curve indicates ascending aorta flow, whereas yellow curve, descending thoracic aorta. Severe aortic regurgitant fraction (34%) is identified. Holodiastolic retrograde flow in the descending thoracic aorta (yellow curve above the baseline) is a specific and supportive finding. Mild mitral regurgitation also identified (regurgitant volume 19 mL; regurgitant fraction 17%).