(a) Position of the 2D SSFP imaging plane for the assessment of the aortic valve. (b) Spectrum of leaflet anatomies examined:A unicuspid (uni.), true bicuspid (true), a right-noncoronary (RN) leaflet fusion, a right-left coronary (RL) leaflet fusion, a normal trileaflet aortic valve (TAV), and a quadricuspid (quad.) valve are shown at systole and diastole. Arrows show the location of the raphe (if present) between the conjoined leaflets.The incomplete opening of the conjoined RL leaflet(yellow box, arrow) is also observed in the left ventricular outflow tract view (a, arrow).