fig10

Figure 10. The eH, gH, and cL in TAV can be properly determined by measuring the distances between the right and non-coronary cusps, the non-coronary cusp and the left coronary cusp and the left and right coronary cusps. This is accomplished with a plane near the center of the aortic valve. In patients with BAV, both cL and eH must be examined in a plane perpendicular to the commissures and near the center of the valve (panel A), whereas gH should be examined in a sectional plane perpendicular to the center portion of both cusps (panel B). eH: Effective height; gH: geometric height; cL: coaptation length; TAV: tricuspid aortic valve; BAV: bicuspid aortic valve.