Figure 1.

(A) Surgical view of the mitral valve after left atriotomy. Note: left atrial appendage (LAA) is located at the left side of the surgeon towards the head of the patient lying on the operating table, and aorta (AO) is located anterior. (B) Corresponding view acquired by 3D TEE zoom mode. Ao = aorta, ALC = anterolateral commissure, PMC = posteromedial commissure, A1 = anterolateral segment, A2 = anteromiddle segment, A3 = anteromedial segment, P1 = posterolateral scallop, P2 = posteromiddle scallop, P3 = posteromedial scallop, Lat = lateral of the patient, Med = medial of the patient.