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. 2017 Nov 15;2017:5054237. doi: 10.1155/2017/5054237

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Copyright © 2017 Kazuhiro Mizukami et al.

This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Visibility of the atrophic border examined with WLI and LCI in areas with very similar colors on WLI. Visibility was evaluated as color differences computed between sample areas of the atrophic and nonatrophic mucosae. Areas with similar colors on WLI were identified as those areas showing ΔE < 5 on WLI, based on the International Commission on Illumination 1976 (L^∗, a^∗, b^∗) color space. In such areas, it is difficult to distinguish the atrophic border on WLI. A total of 11 points (evaluated in 7 patients) met this condition, and color differences expressed as ΔE were compared between WLI and LCI. ΔE values were significantly higher for LCI (P = 0.0001 on exact Wilcoxon signed-rank test).