Fig 1.
Technique for annular and leaflet segmentation. (A) Annular delineation using rotational cross sections at 10-degree increments, centered on the geometric center of the mitral valve. (B) Leaflet segmentation using transverse cross sections every 1 mm along the intercommissural axis. In each panel, the three-dimensional rendered echocardiographic volume containing the mitral valve is displayed on the left, with cross-sectional planes; the two-dimensional resulting cross section is displayed on the right. (AA = anterior mitral annulus; AC anterior commissure; AML = anterior mitral leaflet; AoV = aortic valve; Coapt = mitral leaflet coaptation; LA = left atrium; LV = left ventricle; LVOT = left ventricular outflow tract; MVO = mitral valve orifice; PA = posterior mitral annulus; PC posterior commissure; PML = posterior mitral leaflet.)