The three-dimensional aortic root contains three elliptical rings and one crown-like ring that together form an oval-shaped three-pronged coronet with three anchor points at the nadir of each aortic cusp. The "aortic annulus" is measured at the virtual ring formed by the basal attachments of the aortic cusps.
From: Piazza N, de Jaegere P, Schultz C, et al. Anatomy of the aortic valvar complex and its implications for transcatheter implantation of the aortic valve. Circ Cardiovasc Interv 2008; 1:74. DOI:
10.1161/CIRCINTERVENTIONS.108.780858. Reproduced with permission from Lippincott Williams & Wilkins. Copyright © 2008 American Heart Association. Unauthorized reproduction of this material is prohibited.
