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Figure 1 Four imaging planes to assess the precise localization of prolapsed or flail segments. (A) Intercommissural plane assessing the continuity of the commissural areas. (B) Parasternal short-axis view showing the anterior leaflet (A1, A2, and A3) and the three scallops of the posterior leaflet (P1, P2, and P3). (C) Parasternal long-axis view showing the middle segments of anterior (A2) and posterior (P2) leaflets. (D) Apical four-chamber view showing the anterior para commissural zone (between P1 and P2). ANT. = anterior; AO = descending aorta; AV = aortic valve; LA = left atrium; LAA = left atrial appendage; LV = left ventricle; POST. = posterior; PV = pulmonary vein; RV = right ventricle; TV = tricuspid valve.