Photoshop评价激光治疗痤疮凹陷性瘢痕疗效的探索(1)
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[摘要]目的：探索Photoshop在点阵Er：YAG激光治疗痤疮凹陷性瘢痕疗效分析中应用的可行性。方法：将点阵Er：YAG激光治疗痤疮凹陷性瘢痕患者的术前、术后照片输入计算机，并用Photoshop CS5对每例患者正常部位及凹陷性瘢痕部位进行灰度值计算，然后计算激光术前灰度值差异率、激光术后灰度值差异率及凹陷性瘢痕改善率。结果：①激光术后灰度值差异率小于激光术前灰度值差异率，两组之间差异有显著性(P<0.05)；②随着视觉评分的增高，凹陷性瘢痕灰度值改善率增加，评分为1分、2分组与评分为3分、4分组之间差异有显著性(P<0.05)；③激光治疗次数为3次及3次以上组与治疗次数为2次及2次以下组凹陷性瘢痕灰度值改善率分别为3.3%及1.6%，但两组之间无显著性差异(P>0.05)。结论：①Photoshop可以作为痤疮凹陷性瘢痕疗效性评价的客观评价方法；②点阵 Er：YAG激光治疗痤疮凹陷性瘢痕有效。
[关键词]痤疮；凹陷性瘢痕；Photoshop；点阵Er：YAG
[中图分类号]R758.73+3 [文献标识码]A [文章编号]1008-6455(2012)05-0806-03
Explore of evaluting method by Photoshop on the therapeutic effect of atrophic acne with laser
WU Yan-yu, ZHANG Wei, WANG Na，XU Xiao-yun
(Department of Laser Cosmetic, Shanghai Skin Disease Hospital, Shanghai,200435,China)
Abstract： Objective To explore the feasibility of Photoshop being used in evaluating the therapeutic effect of atrophic acne scar by fractional Er:YAG laser. Methods Input the picture of atrophic acne scar of patient of postoperation and preoperation, then calculate the gray value of normal skin and atrophic acne scar by Photoshop CS5, and then calculate the ratio of difference of gray value of postoperation, ratio of difference of gray value of postoperation and Ratio of improvement of atrophic acne scar. Results ①Ratio of difference of gray value of postoperation was significantly lower than that of preoperation(P<0.05);②Ratio of improvement of gray value of atrophic acne scar increased with clinical score. Ratio of group of 3 score, ratio of group of 4 score were significantly higher than that of group of 1 score and 2 score(P<0.05);③Ratio of improvement of gray value of treatment for 3 times or more than 3 times is 3.3%, and that of treatment for 1 time or 2 times is 1.6%. There was no significant difference between two groups(P>0.05). Conclusion ①Photoshop can be used as an objective method for evaluating the therapeutic effect of atrophic acne scar by fractional Er:YAG laser;② Fractional Er:YAG laser was effective for the treatment of atrophic acne scar.
Key words：acne;atrophic scar;Photoshop;Fractional Er:YAG
痤疮凹陷性瘢痕是痤疮遗留的严重且难以完全恢复的后遗症。大量的临床研究表明点阵2940nm Er：YAG激光治疗痤疮瘢痕有效[1-2]。目前,痤疮凹陷性瘢痕疗效性的评价多为医生的视觉评估，主观因素较多，这使研究的客观性及科学性受到影响。Photoshop是较为普及的一种图像数据处理软件,近年来，笔者科室用Photoshop和肉眼评估法对痤疮凹陷性瘢痕治疗效果进行分析，以探索Photoshop在痤疮凹陷性瘢痕评判中的应用。
1 资料和方法
1.1 临床资料：选择2010年2月～2011年10月在上海市皮肤病医院医学美容科就诊且照片清晰的痤疮凹陷性瘢痕患者共62例 ......
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