Fig. 3
a 3D CT image in systole shows bicuspid aortic valve with a symmetric and elliptical orifice. Note the right (arrow) and left (long arrow) coronary arteries originating from anterior cusp (A) formed by fusion of the right and left coronary cusp. b Three-dimensional virtual angioscopic image of the aortic root shows the bicuspid aortic valve (arrows), ostium of the left main coronary artery (L), and a slit-like orifice of the right coronary artery (thin arrows) which is located high at the sinotubular junction. c In the systolic phase, the orifice of the RCA is nearly effaced (thin arrows).