Valsalva sinus asymmetry in bicuspid aortic valve: diameter through fused cusp is smaller than diameter through nonfused cusp but maximal diameter is the same whatever the phenotype when estimated by CMR

Background Previous studies establish a link between bicuspid aortic valve (BAV) morphology and aortic shape. Anteroposterior (AP) leaflets with right left (RL) fusion was found more often associated with dilatation of VS than left-right (LR) leaflets with either fusion between right and noncoronary(R-NC) cusps or between left and noncoronary cusps(L-NC). However, most of these studies were performed by transthoracic echocardiography with parasternal long axis view measurements without taking into account a possible valsalva sinus (VS) asymmetry. The aim of our study was to assess aortic valsalva sinus size and morphology by CMR in a large cohort of BAV subjects.