Fig. 1

Quantitative parameters of MA. 3-dimensional shape of the MA automatically generated from a geometric model (A, B). MA area (3D TEEsa MA area) (A), and anatomically correct 3D TEE AP and ALPM diameters (B) were derived. Approximate position of cut planes obtained with standard transthoracic echocardiographic views (C). A4c: apical 4 chamber, ALPM: anterolateral to posteromedian, AP: anteroposterior, A2c: apical 2 chamber, MA: mitral annulus, 3D TEE: 3-dimensional transesophageal echocardiography, 3D TEEsa: 3-dimensional transesophageal echocardiography semi-automated method, long-axis view: either parasternal long axis view or apical 3 chamber view