Q开关Nd:YAG激光治疗外源性皮肤色素性疾病216例

应用 Q开关 Nd∶ YAG激光治疗不同颜色的纹身、纹眉、纹眼线等。共治疗 2 16例 ,治愈 2 12例 ,治愈率98%。Q开关 YAG激光治疗外源性色素性疾病疗效显著 ,无瘢痕及毛囊损害。较现有其它常规方法有更多的优点     

美容皮肤病学中的激光外科

当前，激光美容外科的两个有意义的方面是治疗鲜红斑痣和纹身（包括碎片纹身)。 氩激光治疗鲜红斑痣通常是在门诊进行。对7岁以上的儿童，激光疗效经证明后，可在氯胺酮麻醉下进行广泛治疗。应用现有的装置，只能进行小面积治疗，会有点状色素沉着斑出现。激光装置必须改进的能进行大面积治疗，并能防止点状色素沉着。目前的研究还包括用于对照的非相干红外凝固器。一种适合皮肤病的氩激光器目前已可供使用。     

特定波长激光清除纹饰色素病变的应用

纹饰性色素病变是将外源物质植入真皮造成的一种明显视觉效果。如纹身,通常由美容师及纹身艺术家所作,或由外伤引起。以黑、红、棕色等纹眉、纹眼线,唇线等曾流行多年。要清除以上病变,传统的方法主要是去除或破坏纹身部位的组织,无论是化学性的还是非化学性的磨皮法、冷冻法、电灼法或手术法、切除法,虽然有效,但常常留下疤痕,近年来。为不留下疤痕,人们又利用乳白色素(俗称色素)纹刺在不再需要的纹身部位,以起掩饰作用,这同时又形成了更难以清除的纹身。     

CO_2激光治疗人为纹身

去除人为纹身，以往多采用手术切除的方法，因需自体植皮并留有疤痕而不尽人意。我们采用CO2激光对6例纹身去除，均取得满意效果，特报道如下：临床资料采用国产HN2－Ⅱ型CO2激光治疗器行纹身去除，6例均为男性，年令18～25岁，前臂2例、上臂外侧2例、背部2例。其中文字图像4例、图案图像2例。去除方法：术前常规消毒患处，用2％普鲁卡因进行局部浸润麻醉，激光头对准患处行扫描式烧灼；然后用盐水棉球擦去炭化组织，观察色素是否去除，如未去除再重复烧灼，术后创面用红霉素软膏涂敷。5天后红肿反应基本消失、乃行补治。补治目的一针对…     

Q开关多波长激光治疗7O例复杂性纹眉

应用Q开关多种波长激光治疗70例复杂性纹眉。治愈率100％。该激光祛除多种颜色的纹眉疗效显著,且无疤痕及毛囊损害。较常规方法有更多优点。     

Starlux晶钻光LuxG对面部雀斑的临床疗效分析

目的：观察Starlux晶钻光LuxG治疗面部雀斑的临床疗效。方法：采用Starlux晶钻光LuxG,根据患者皮肤选择适当的参数,对37例雀斑患者进行治疗。患者每次治疗间隔为4至6周,2至3次治疗结束,随访6个月。结果：治疗的有效率为97．3％（36例）,色素沉着发生率低（2．7％）,1例,术后无瘢痕及色素脱失。结论：Starlux晶钻光LuxG治疗面部雀斑疗效满意,是一种安全无创便捷的治疗方法。     

Q开关Nd：YAG激光治疗纹身1000例

目的探讨Q开关NdYAG激光治疗纹身的临床效果。方法用Q开关NdYAG激光治疗不同类型的纹身,根据纹身颜色的不同选用1064nm波长或532nm波长进行治疗,对于部位较深的病变需多次治疗,每次间隔2～3个月。结果共治疗1000例,一次治愈率达44.5%,有效率达100%。安全可靠,疗效确切,不留瘢痕。     

Q开关Nd:YAG激光、倍频Nd:YAG激光、紫翠宝石激光治疗纹身的实验研究

目的为研究对正常皮肤无损伤、合适、有效的波长和治疗参数.方法以新西兰白兔针刺法建立黑色、红色、绿色和蓝色的纹身动物模型,以三种常用Q开关激光(Q开关NdYAG激光、倍频NdYAG激光、紫翠宝石激光)不同参数设置治疗四个疗程后进行疗效评估.结果(1)纹身颜色对波长有选择性,三种Q开关激光治疗黑色纹身疗效均较好且无差异,Q开关紫翠宝石激光治疗绿色、蓝色纹身,Q开关倍频NdYAG激光治疗红色纹身效果最好并与其它两种激光有显著差异.(2)三种激光治疗合适颜色的纹身时疗效均随能量密度的增高有显著差异而与频率无关.结论合理选择波长和治疗参数可有效去除纹身而不留疤痕,治疗多种颜色的纹身必须同时使用几种波长,Q开关激光治疗纹身需要多次治疗.     

非剥脱性Lux1540nm点阵激光治疗黄褐斑的疗效和安全性

目的:观察非剥脱性Lux1540nm点阵激光对黄褐斑的治疗效果和安全性.方法:黄褐斑患者29例,运用Lux1540nm点阵激光(美国Palomar公司生产),波长1540nm,光斑直径15mm,能量6至8J/cm2,每4周一次,6次为一疗程,观察其临床疗效及副作用.结果:29例患者经过治疗后,基本治愈13例(44.8％),显效9例(31％),好转6例(20.7％),无效1例,总有效率为75.9％.治疗后患者的皮肤微红,不出血、不结痂.恢复后无色素脱失,不易产生色素沉着,不产生瘢痕.结论:非剥脱性Lux1540nm点阵激光治疗黄褐斑安全性高,疗效显著,不影响患者的日常生活及工作,是一种安全,有效的方法.     

Q开关Nd:YAG激光治疗皮肤色素损害临床分析

目的:观察Q开关Nd:YAG激光治疗皮肤色素损害的临床疗效。方法:皮肤色素损害患者637例,其中太田痣102例,咖啡斑55例,雀斑180例,纹身300例。应用Q开关激光,针对不同病变类型,采用不同波长和工作参数进行祛色治疗。结果:经过1-8次治疗,不同皮肤色素损害的有效率分别为:太田痣100%、咖啡斑61%、雀斑100%、纹身100%。所有病例在治疗后均未遗留疤痕。结论:应用Q开关Nd:YAG激光治疗皮肤色素损害具有疗效好,组织损伤少,不留疤痕等特点。     

Q开关Nd:YAG激光治疗150例文身临床分析

目的:观察Q开关Nd:YAG激光对文身的治疗效果。方法:用Q开关Nd:YAG激光治疗不同类型的文身,能量密度5～12J/cm2,脉冲宽度5～7ns,重复频率1、2、5、10Hz,光斑尺寸2、3、4、6mm可调,对于文身较深者需多次治疗,每次间隔三个月。结果:共治疗150例,一次治愈率30％,总有效率达100％。结论:Q开关Nd:YAG激光治疗文身,组织损伤小,痛苦少,不留疤痕。     

多波长(Vegas Laser)激光在皮肤外源性色素性病变中的临床研究

目的：探索对外源性皮肤色素性病变的治疗方法。方法：分析了多波长激光治疗外源性皮肤色素性病变500例。结果：多波长激光治疗纺眉、眼线和普通纹身的疗效好，而对专业纹身和爆炸伤的疗效差。结论：多波长激光对皮肤浅表的、单一色素颗粒沉积疗效好，但对皮肤深在的、多种色素颗粒沉积疗效差。     

Self‐Healable Multifunctional Electronic Tattoos Based on Silk and Graphene

Electronic tattoos (E‐tattoos), which can be intimately mounted on human skin for noninvasive and high‐fidelity sensing, have attracted the attention of researchers in the field of wearable electronics. However, fabricating E‐tattoos that are capable of self‐healing and sensing multistimuli, similar to the inherent attributes of human skin, is still challenging. Herein, a healable and multifunctional E‐tattoo based on a graphene/silk fibroin/Ca²⁺ (Gr/SF/Ca²⁺) combination is reported. The highly flexible E‐tattoos are prepared through printing or writing using Gr/SF/Ca²⁺ suspension. The graphene flakes distributed in the matrix form an electrically conductive path that is responsive to environmental changes, such as strain, humidity, and temperature variations, endowing the E‐tattoo with high sensitivity to multistimuli. The performance of the E‐tattoo is investigated as a strain, humidity, and temperature sensor that shows high sensitivity, a fast response, and long‐term stability. The E‐tattoo is remarkably healed after damage by water because of the reformation of hydrogen and coordination bonds at the fractured interface. The healing efficiency is 100% in only 0.3 s. Finally, as proof of concept, its applications for monitoring of electrocardiograms, breathing, and temperature are shown. Based on its unique properties and superior performance, the Gr/SF/Ca²⁺ E‐tattoo may be a promising candidate material for epidermal electronics.     

Q开关 Nd:YAG 激光、倍频Nd:YAG 激光、紫翠宝石激光去除纹身的显微镜、电镜分析

为研究Q开关激光去除纹身在细胞水平上的生物作用机制,以新西兰白兔针刺法建立黑色、红色、绿色和蓝色的纹身动物模型,经不同激光不同参数设置治疗,治疗后在不同时间进行病理电镜观察.结果发现(1)激光治疗后即刻含色素的细胞可见巨大空泡,色素散至空泡边缘,激光治疗后一周、一月呈慢性炎症反应.(2)组织学变化随能量密度的增加而明显.(3)Q开关NdYAG激光治疗黑色纹身、Q开关倍频NdYAG激光治疗红色纹身、Q开关紫翠宝石激光治疗绿色纹身效果较好.结论纹身色素的去除是一个极其复杂的过程,至少包括治疗后即刻的光热效应(photothermal effect),光化学效应(photochemical effect),光声学效应(photoacoustic     

现勘图像检索综述

现勘图像检索是进行证据图像比对以获取物证信息的重要手段.本文基于目前应用广泛的现勘图像数据库,根据图像内容将图像分为鞋印、指纹、纹身等种类.并通过对现勘图像的两项关键技术即低层数字特征提取和高层语义分析的总结,从颜色特征、纹理特征、边缘提取等方面综述了现勘图像低层数字特征提取技术,从利用语义模板和数据库本体结构、机器学习算法、引入人工反馈三大类高层语义提取技术综述了现勘图像高层语义分析的研究成果.最后,结合公安行业利用现勘图像获取物证线索的实际应用需求,指出了通过引入公安行业先验知识来提高检索效率等研究方向.     

Hydrogel‐Enabled Transfer‐Printing of Conducting Polymer Films for Soft Organic Bioelectronics

The use of conducting polymers such as poly(3,4‐ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) for the development of soft organic bioelectronic devices, such as organic electrochemical transistors (OECTs), is rapidly increasing. However, directly manipulating conducting polymer thin films on soft substrates remains challenging, which hinders the development of conformable organic bioelectronic devices. A facile transfer‐printing of conducting polymer thin films from conventional rigid substrates to flexible substrates offers an alternative solution. In this work, it is reported that PEDOT:PSS thin films on glass substrates, once mixed with surfactants, can be delaminated with hydrogels and thereafter be transferred to soft substrates without any further treatments. The proposed method allows easy, fast, and reliable transferring of patterned PEDOT:PSS thin films from glass substrates onto various soft substrates, facilitating their application in soft organic bioelectronics. By taking advantage of this method, skin‐attachable tattoo‐OECTs are demonstrated, relevant for conformable, imperceptible, and wearable organic biosensing.     

On‐Body Bioelectronics: Wearable Biofuel Cells for Bioenergy Harvesting and Self‐Powered Biosensing

The growing power demands of wearable electronic devices have stimulated the development of on‐body energy‐harvesting strategies. This article reviews the recent progress on rapidly emerging wearable biofuel cells (BFCs), along with related challenges and prospects. Advanced on‐body BFCs in various wearable platforms, e.g., textiles, patches, temporary tattoo, or contact lenses, enable attractive advantages for bioenergy harnessing and self‐powered biosensing. These noninvasive BFCs open up unique opportunities for utilizing bioenergy or monitoring biomarkers present in biofluids, e.g., sweat, saliva, interstitial fluid, and tears, toward new biomedical, fitness, or defense applications. However, the realization of effective wearable BFC requires high‐quality enzyme‐electronic interface with efficient enzymatic and electrochemical processes and mechanical flexibility. Understanding the kinetics and mechanisms involved in the electron transfer process, as well as enzyme immobilization techniques, is essential for efficient and stable bioenergy harvesting under diverse mechanical strains and changing operational conditions expected in different biofluids and in a variety of outdoor activities. These key challenges of wearable BFCs are discussed along with potential solutions and future prospects. Understanding these obstacles and opportunities is crucial for transforming traditional bench‐top BFCs to effective and successful wearable BFCs.