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. Author manuscript; available in PMC: 2013 Oct 31.
Published in final edited form as: Ann Thorac Surg. 2008 Sep;86(3):10.1016/j.athoracsur.2008.03.079. doi: 10.1016/j.athoracsur.2008.03.079

Fig. 3.

Fig. 3

A transvalvular view shows a single subject three-dimensional rendering. The geometric relationships between anterior and posterior leaflet zones (A1 to A3 and P1 to P3) are illustrated. The midanterior annulus (mid-AA), midposterior annulus (mid-PA), anterior commissure (AC) and posterior commissure (PC) are indicated for purposes of orientation.