Fig. 2

Changes in the distance between the lesion and the normal skin in terms of RGB values before and after treatment in all patients. (a) Changes in the R distance. (b) Changes in the G distance. (c) Changes in the B distance. (d) Changes in the ratios relative to day 1 of the R, G, and B distance. (e) Changes in the RGB distance. (F) Changes in the ratio relative to day 1 of the RGB distance. *P < 0.05, **P < 0.01, ***P < 0.001. ns, not significant.