FIGURE 2
A. Pre-operative 3D-CT image. B. Identification of the pulmonary vein ostium (white line) and isolated antral surface area (IASA) (grey area: <0.2mV). C. Total IASA and left atrial posterior wall surface area (PWSA). D. Left-sided IASA and right-sided IASA. IASA total = total IASA.