Fig. 2

Representative HOA ablation maps. The yellow/green colors on each HOA map indicate shallower ablation values, while the red/purple colors indicate deeper ablation. The colors of each map are normalized to their deepest ablation values. Every HOA map featured one or two red/purple peripheral ablation crescents (islands 1 and 4), a yellow/green paracentral superior ablation island (island #2), and a red/purple paracentral inferior ablation island (island #3). We quantitatively characterized the HOA ablation map islands based on their distance from center, positioning, orientation, circularity, diameter, area, and depth