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. Author manuscript; available in PMC: 2013 Dec 1.
Published in final edited form as: Br J Dermatol. 2012 Oct 5;167(6):1215–1223. doi: 10.1111/j.1365-2133.2012.11139.x

Figure 8.

Figure 8

Representative example of LSI during laser surgery of PWS skin. Images of a PWS subject are shown before treatment (top frames) and after laser treatment (bottom frames). False color images (left) depict SFI values. The speckle flow index scale, which is a metric of blood flow, is shown next to each speckle flow image (14). The white/red portion of pretreatment tissue in the speckle flow image corresponds to relatively high flow. After laser treatment, the speckle flow index has decreased (green region), indicating that at perfusion has been reduced. At this point, there is not enough data to show whether LSI provides quantitative information that alone serves as a sufficient prognostic tool. Clinical data are currently analyzing and a new study is designing that focuses specifically on the relationship between purpura and SFI values.