长脉冲1064nm Gentle YAG激光联合595nm脉冲染料激光治疗增厚型微静脉畸形回顾性分析

目的：观察长脉冲1064nm Gentle YAG激光联合595nm脉冲染料激光治疗增厚型微静脉畸形的临床疗效和不良反应。方法：使用长脉冲1064nm Gentle YAG激光和595nm脉冲染料激光对14例患者进行治疗,其中长脉冲1064nm Gentle YAG激光能量密度150～240J/cm2,光斑直径3mm,脉宽20～40ms;595nm脉冲染料激光能量密度12～15J/cm2,光斑直径7mm,脉宽6～20ms;共治疗2～7次,间隔时间4～8周。结果：痊愈6例（6/14）,显效5例（5/14）,好转3例（3/14）,无效0例。治疗后出现轻度色素沉着3例（3/14）,均在数月后恢复,遗留增生性瘢痕1例（1/14）,凹陷性瘢痕1例（1/14）。结论：长脉冲1064nm Gentle YAG激光联合595nm脉冲染料激光是目前比较安全、高效的治疗增厚型微静脉畸形的方法。     

优化强脉冲光联合长脉宽Nd∶YAG1064nm激光治疗痤疮瘢痕疗效研究

目的 观察优化强脉冲光联合长脉宽Nd：YAG1064nm激光治疗痤疮瘢痕及其伴发色素沉着、红斑、毛孔粗大临床疗效. 方法 痤疮瘢痕患者共162例,采用随机分组其中78例运用优化强脉冲光联合长脉宽Nd：YAG 1064nm激光治疗,48例运用优化强脉冲光治疗,36例运用长脉宽Nd：YAG 1064nm激光治疗.治疗参数：强脉冲光滤光片640nm,能量密度20～24J/cm2,脉宽4ms,脉冲3个,延迟时间30ms.Nd：YAG1064nm激光,9mm光斑治疗头,能量密度单脉冲58～64J/cm2,脉宽20ms.一疗程5次,每次间隔1个月. 结果 162例患者3种治疗方式ECCA评分差异有统计学意义（P＜0.05）;治疗方式中优化强脉冲光联合长脉宽Nd：YAG1064nm激光治疗组与优化强脉冲治疗组ECCA评分差异有统计学意义（P＜0.05）,优化强脉冲光联合长脉宽Nd：YAG1064nm激光治疗组与长脉宽Nd：YAG1064nm激光治疗组ECCA评分差异有统计学意义（P＜0.05）.痤疮瘢痕及其伴发色素沉着有效率71.19％（95％CI：59.40％～82.98％）,红斑有效率88.14％ （95％CI：79.91％～96.37％）,毛孔粗大有效率71％（95％CI：60.45％～81.97％）.所有患者治疗中未发现任何严重的副作用. 结论 优化强脉冲光联合长脉宽Nd：YAG1064nm激光治疗对痤疮瘢痕及伴有局部色素沉着,红斑,毛孔粗大等都有较好的疗效.     

PDL和长脉宽Nd:YAG在早期瘢痕治疗中的疗效对比

目的比较PDL和长脉宽1 064 nm Nd∶YAG两种激光在早期瘢痕治疗中的临床疗效和安全性。方法对早期瘢痕患者进行随机自身对照研究。将瘢痕等分为两组,两侧分别行PDL(Vbeam,Candela,595 nm,6~9 J/cm~2,脉宽0.45 ms,光斑7 mm,DCD 20/20 ms)和Nd∶YAG激光(Gentle YAG,Candela,150~180 J/cm~2,脉宽10 ms,光斑3 mm,DCD20/20/20 ms)治疗。每月1次,共治疗3次,随访2个月后进行VSS评分。结果本组共21例早期瘢痕患者,瘢痕时间平均3.4周。治疗前VSS评分为(4.57±1.29);治疗后,VSS评分PDL组为(3.62±1.11),Nd∶YAG组为(3.48±1.17)。两组VSS评分差异无统计学意义(P0.05),但均较治疗前显著降低(P0.05)。厚度和血流情况评分,PDL组显著优于Nd∶YAG组(P0.05);柔软度评分Nd∶YAG组显著优于PDL组(P0.05)。结论 PDL和Nd∶YAG两种激光均可改善早期瘢痕外观,但其优势各有不同。     

单用强脉冲光、长脉宽Nd:YAG激光以及低能量下两者联合使用治疗微静脉畸形的临床疗效比较

目的:观察单用强脉冲光、长脉宽1064nm Nd:YAG激光以及低能量下两者联合使用治疗微静脉畸形的临床疗效和不良反应。方法:联合应用590～1200nm强脉冲光(能量密度12～16J/cm2,脉宽3.0～5.0ms)以及长脉宽1064nm Nd:YAG激光(能量密度80～90J/cm2,脉宽10～20ms)治疗51例微静脉畸形患者;并与单独应用强脉冲光(能量密度13～20J/cm2)及长脉宽Nd:YAG激光(能量密度120～145J/cm2)治疗结果比较。结果:强脉冲光、长脉宽1064nmNd:YAG激光及低能量下联合使用治疗微静脉畸形的有效率分别为33.1%、40.3%和56.9%,瘢痕发生率分别为0%、10.7%和5.9%。结论:低能量下联合使用强脉冲光及长脉宽1064nm Nd:YAG激光提高了微静脉畸形的有效率,且不良反应小。     

Vbeam脉冲染料激光治疗皮肤葡萄酒色斑的疗效分析

目的 评价595 nm Vbeam脉冲染料激光治疗皮肤葡萄酒色斑(Pint wine stains,PWS)的临床疗效.方法 共114例PWS患者接受595 nm Vbeam脉冲染料激光治疗,脉宽3～10 ms,光斑直径7mm,能量密度10-15 J/cm2,动态冷却喷射30～40 ms,间隔10～30 ms,治疗间隔4～8周.根据皮损消退,将疗效分为4级:Ⅰ级为＞75%,Ⅱ级为50%～74%,Ⅲ级为25%～49%,Ⅳ级为＜25%.结果 114例经过1～10次治疗(平均5.9次),取得很好临床效果,其中Ⅰ级74例(64.9%),Ⅱ级29例(25.4%),Ⅲ级9例(7.9%),Ⅳ级2例(1.8%).并分析治疗次数、年龄大小、发生部位、颜色特点和疗效的关系,年龄小、发生于颈面部位、粉红型病损者疗效显著.随访6个月至2年,无复发,治疗部位无瘢痕形成.结论 595 nm波长Vbeam脉冲染料激光治疗皮肤PWS效果良好,并发症少,是目前一种很安全、较可靠的治疗方法.     

595nm/1064nm双波长激光治疗酒渣鼻的疗效观察

目的:探讨595nm/1 064nm双波长激光治疗酒渣鼻的疗效及安全性。方法:采用595nm/1 064nm双波长激光对20例红斑期、毛细血管扩张期酒渣鼻患者实施治疗。所用光斑直径为7mm,595nm激光脉宽20～40ms,能量密度7.0～8.0J/cm2;1 064nm激光脉宽20～40ms,能量密度70～80J/cm2,双光间隔100ms。根据受试者Fitzpatrick光生物学分型、皮肤耐受程度、血管粗细、血管颜色、血管深浅等选择治疗参数,治疗3～4次,每次治疗间隔时间均为4～5周。结果:治疗后即刻血管颜色加深或消失,红斑颜色加深或者出现紫癜;4次治疗后治疗部位的红斑指数均值显著下降,85%以上的受试者皮损清除率达到50%以上,75%以上的受试者对治疗满意或非常满意。不良反应为轻微疼痛,暂时性红斑和紫癜,约7～10天后自然消退。结论:595nm/1 064nm双波长可安全、有效地治疗酒渣鼻。     

脉冲染料激光治疗溃疡性血管瘤的临床研究

目的探讨脉冲染料激光(Pulsed dye laser,PDL)治疗溃疡性血管瘤的临床疗效和安全性。方法创面清洁的溃疡性血管瘤患儿,采用脉冲染料激光治疗(波长585 nm,脉宽0.45 ms,光斑5 mm,能量密度6.0～6.5 J/cm2),治疗间隔时间2～3周。治疗后随访观察溃疡完全再上皮化时间、疼痛缓解时间,以及溃疡创面的出血、感染等情况。结果本组共15例溃疡性血管瘤患儿,治疗前及治疗过程中均未接受其他治疗。14例(93.3%)仅接受1次PDL治疗,1～2周内溃疡创面完全再上皮化;1例(6.7%)接受2次PDL治疗后,溃疡创面再上皮化。溃疡的平均完全再上皮化时间为(1.68±0.23)周。所有患儿均在治疗后1～2 d内疼痛得到缓解。治疗后无一例出现溃疡创面扩大,未发生出血、感染等并发症。结论PDL能加快溃疡性血管瘤的创面愈合,缓解疼痛,治疗后无出血、感染及溃疡加重等并发症,可作为溃疡性血管瘤早期治疗的安全有效的方法。     

Nd：YAG 1064nm激光治疗面部毛细血管扩张的临床体会

目的：观察Nd：YAG 1064nm激光治疗面部毛细血管扩张的临床疗效和安全性。方法：应用Nd：YAG 1064nm激光治疗面部毛细血管扩张患者35例,毛细血管直径0.3～1.5mm,光斑直径1.5mm,能量密度280～420J/cm^2,脉宽20～50ms,重复频率1Hz,共治疗1～4次,治疗间隔6～8周。治疗后随访1～6个月,评价治疗效果。结果：35例患者,痊愈18例（51.4%）,显效11例（31.4%）,有效6例（17.1%）,无效0例,有效率82.9%。所有病例均无水疱,紫癜,色素沉着或减退、脱失及瘢痕形成等。结论：在调整好治疗参数的情况下,Nd：YAG1064nm激光治疗面部毛细血管扩张安全、疗效显著,可进一步临床观察应用。     

Nd:YAG激光治疗葡萄酒色斑诱发癫痫发作1例

1 病例介绍某男,16岁,因“自幼右侧颜面部出现红色斑块,影响美观”就诊。患者智力低于同龄人,继往无癫痫史。专科查体:右侧颜面部暗红色斑块,表面平坦,压之退色,面积12cm×9cm,患侧上唇较对侧明显增厚。头颅X线片未做。入院诊断:Sturge-Weber综合征?入院后对其面部葡萄酒色斑进行激光治疗。治疗方法:皮损区5%EMLA软膏表面麻醉后以Nd:YAG 532nm激光照射,参数:脉宽10ms,频率1.5Hz,光斑4mm,能量密度9.5J/cm2或光斑3mm,能量密度12J/cm2,采用边照射边冷却的方法,冷却温度4℃,100%光斑重叠率,以治疗区颜色变为粉红为治疗结束标准。第一次治…     

强脉冲光脱除移植皮肤上毛发的临床效果观察

目的 观察强脉冲光脱除移植皮肤上无需的毛发的临床效果.方法 应用ELITEplus强脉冲光脱毛系统脱除移植皮肤上无需的毛发,一般需3～5次治疗,每次间隔2个月,其治疗参数为波长610～1 000 nm,光斑面积50 mm×10 mm,分脉宽5 ms,延时2～20 ms,能量密度30～38.3J/cm2.结果 10例患者均能耐受治疗,无需麻醉.经3～5次治疗,毛发基本完全脱落.治疗后无需包扎,常规洗浴.无水泡、感染、色素沉着及瘢痕形成等并发症.随访6～12个月,只有少许毳毛再生.结论 强脉冲光脱毛系统脱除移植皮肤上无需的毛发,疗效可靠,操作简单,治疗速度快,无并发症发生,是一种比较理想的脱毛方法.     

不同类型皮肤激光脱毛效果与并发症的探讨

目的 探讨半导体激光和长脉冲翠绿宝石激光对不同类型皮肤脱毛的效果与并发症.方法 将1103例（1760部位）按皮肤类型随机分为两组;一组使用半导体激光治疗,波长810 nm,脉宽400 ms,方形光斑12 mm×10 mm;另一组使用长脉冲翠绿宝石激光治疗,波长755 nm,脉宽20 ms,光斑直径12.5 mm,2次治疗间隔时间均为50～60 d.结果 两种治疗方法对不同类型的皮肤进行脱毛治疗,效果无明显差异,但对深肤色者,半导体激光治疗的并发症发生率低.结论 两种激光对不同类型皮肤脱毛效果相似,但半导体激光对深色皮肤的脱毛更安全.     

双波长Cynergy激光治疗婴幼儿血管瘤疗效评估

目的探讨双波长Cynergy激光治疗婴幼儿血管瘤的临床疗效及安全性。方法应用双波长Cynergy激光治疗仪治疗婴幼儿血管瘤452例,激光参数为;闪光灯泵浦脉冲染料激光（PDL）10～12J／cm2＋钕：钇-铝-石榴石（Nd：YAG）激光35～60J／cm2,脉冲持续时间;PDL 10ms和Nd：YAG15ms。光斑直径7mm。脉冲延迟：长延迟。采用Cynosure冷风机动态冷却设备（smartcool）,2～4个疗程,间隔为1个月。结果治愈（病灶清除〉75％）326例,占72．12％;显效（病灶清除50％～75％）94例,占20．80％;有效（病灶清除25％～〈50％）32例,占7．08％,无效（病灶消除〈25％）为0。12个月内复发9例,复发率2％。出现瘢痕29例（6．42％）,色素沉着53例（11．73％）;色素脱失24例（5．31％）;色素改变均在4～6个月后自然恢复。头部血管瘤采用两种治疗模式,PDL＋Nd：YAG疗效明显优于PDL,但两种治疗模式的脱发率差异无统计学意义。结论顺序发射波长585DmPDL及1064nmNd：YAG激光的双波长Cynergy激光,是治疗婴幼儿血管瘤的有效方法,起效快、不良反应小。     

Efficacy of Pulsed Dye Laser in Facial Port-Wine Stains in Indian Patients

BACKGROUND: Facial port-wine stain (PWS) produces severe cosmetic disfigurement and pulsed dye laser (PDL) has revolutionized the treatment of PWS. OBJECTIVE: To assess the efficacy of PDL for facial PWS in Indian patients. MATERIALS AND METHODS: Twenty-seven patients of Fitzpatrick skin types IV and V in the age group of 8 to 34 years (mean 21.6 years), with lesional size 3 x 1.5 to 25 x 19 cm and color from light pink to deep red and violaceous, were recruited. Laser parameters were spot size, 7 mm; fluence, 5 to 7.5 J/cm(2); wavelength, 585 nm, pulse duration, 0.45 ms; along with continuous air cooling. Response at every session was graded from 0 to 5+(0, no improvement; 1+, up to 25%; 2+, 26% to 50%; 3+, 51% to 75%; 4 +, 76% to 99%; 5+, 100% lightening). RESULTS: In a total of 170 sessions, maximum response of 1+ was observed in 6 patients after mean of 3.5 sessions, 2+ in 8 patients after mean of 5.25 sessions, 3+ in 8 patients after mean of 7 sessions, and 4+ improvement in 5 patients after mean of 4.8 sessions. No patient showed complete clearance. Seven patients developed hyperpigmentation while 1 patient showed hypopigmentation, but none had textural change or scarring. CONCLUSION: PDL offers significant cosmetic improvement in facial PWS in Indian patients.     

1540nm Er：glass激光治疗痤疮临床疗效观察

目的探讨1540nmEr：glass激光对痤疮的疗效及安全性。方法应用1540nmEr：glass激光对16例中度痤疮患者进行面部治疗。光斑：4mm;脉宽：3．3ms;6次／疗程,每次间隔2-3周;活动性皮损：10J／cm^2×6pulses,其他部位：10J／cm^2×（3-4）pulses。皮肤冷却：5℃,Constans手柄冷却（QuantelMedical）：结果经6次治疗后,平均疗效指数为85．9％,随访半年后降至80％;患者满意率达90％;皮脂分泌平均减少54,2％。16例患者均无不良反应。结论1540／nm Er：glass激光治疗痤疮安全而有效.     

Treatment of Resistant Port-Wine Stains with a Variable-Pulse Pulsed Dye Laser

BACKGROUND: The conventional pulsed dye laser (PDL), operating at a wavelength of 585 nm and a pulse duration of 0.45 ms, usually does not achieve complete clearance in the majority of port-wine stains (PWSs). OBJECTIVE: In this study, we demonstrate the efficacy of a variable-pulse pulsed dye laser (VPPDL) equipped with cryogen spray cooling (CSC) in the treatment of PWS that have become resistant to PDL treatment. METHODS: Forty Asian patients with Fitzpatrick skin types III to IV were enrolled in this study. All patients had previously been treated by the PDL at least eight times (mean, 12.8+/-5.9) and had reached a treatment plateau. A VPPDL with a wavelength of 595 nm and a spot size of 7 mm was used. The patients were treated with fluences between 9 and 15 J/cm(2) and pulse durations of 1.5 to 10 ms. Four treatments were administered at 8-week intervals for each lesion. Three months after the last treatment, all patients were evaluated for the degree of improvement by two independent clinicians. RESULTS: Eight patients had excellent improvement, 9 had good improvement, 11 had fair improvement, and 12 had poor improvement. No complications were observed during the course of laser treatment. Vessels larger than 30 microm were not seen in the biopsy specimens obtained after the final treatment. CONCLUSION: The VPPDL is more effective than the PDL and the VPPDL should be used for treating PDL-resistant PWSs. Nonetheless, vessels less than 30 mum in diameter are resistant to both PDL and VPPDL treatment.     

长脉冲1064nm Nd：YAG激光治疗面部激素依赖性皮炎伴发的毛细血管扩张

目的：观察长脉冲1 064nm Nd：YAG激光治疗面部激素依赖性皮炎伴发毛细血管扩张的临床治疗效果。方法：治疗参数选用：光斑直径3mm,平均脉宽（13.5±3.4）ms,平均能量密度（267.2±3.1）J/cm2。结果：37例女性患者,平均治疗2.3次,面部毛细血管扩张平均密度由（2.76±1.03）根/cm2下降至（0.42±0.27）根/cm2,临床疗效显著。治疗后,皮肤恢复至基本正常状态,无瘢痕、色素改变,皮炎反复发作的现象消失。结论：长脉冲1 064nm Nd：YAG激光治疗面部激素依赖性皮炎伴有的毛细血管扩张具有较好临床治疗效果,方法值得进行更广泛的临床实践与深入研究。     

Evaluating the Efficacy of Treatment of Resistant Port-Wine Stains With Variable-Pulse 595-nm Pulsed Dye and 532-nm Nd:YAG Lasers

Background. Some port wine stains (PWSs), despite multiple treatments with the 585-nm 0.45-ms pulsed dye laser (PDL), fail to improve substantially.
Objective. To determine the efficacy and tolerability of variable pulse width 595-nm PDL and 532-nm Nd:YAG laser in the treatment of resistant PWS.
Methods. Twenty-two patients whose PWS failed to achieve more than 75% lightening after more than 15 treatments with the 585-nm 0.45-ms PDL were recruited. A homogenous patch of PWS was divided into five areas. Area 1 (control area) was treated with 585-nm, 0.45-ms PDL (fluence 7.5 J/cm²). Areas 2 and 3 were treated with 595-nm PDL at fluence 15 J/cm² (with cryogen spray cooling) and pulse durations of 1.5 and 10 ms, respectively. Areas 4 and 5 were treated with a 532-nm Nd:YAG laser at 2 ms, 7 J/cm² and 10 ms, 16 J/cm², respectively (with a contact cooling tip). The response was assessed by photographic evaluation.
Results. Three patients had further lightening in area 2, and two patients had further lightening in area 3. Each of three patients had further lightening in areas 4 and 5, respectively. One patient had further lightening in the control area.
Conclusion. In individual patients, it may be effective to treat resistant PWS with the variable-pulse width 595-nm PDL and the 532-nm Nd:YAG laser.     

Microvascular blood flow dynamics associated with photodynamic therapy, pulsed dye laser irradiation and combined regimens

BACKGROUND AND OBJECTIVES: Previous in vitro studies demonstrated the potential utility of benzoporphyrin derivative monoacid ring A (BPD) photodynamic therapy (PDT) for vascular destruction. Moreover, the effects of PDT were enhanced when this intervention was followed immediately by pulsed dye laser (PDL) irradiation (PDT/PDL). We further evaluate vascular effects of PDT alone, PDL alone and PDT/PDL in an in vivo rodent dorsal skinfold model. STUDY DESIGN/MATERIALS AND METHODS: A dorsal skinfold window chamber was installed surgically on female Sprague-Dawley rats. One milligram per kilogram of BPD solution was administered intravenously via a jugular venous catheter. Evaluated interventions were: control (no BPD, no light), PDT alone (576 nm, 16 minutes exposure time, 15 minutes post-BPD injection, 10 mm spot), PDL alone at 7 J/cm2 (585 nm, 1.5 ms pulse duration, 7 mm spot), PDL alone at 10 J/cm2, PDT/PDL (PDL at 7 J/cm2), and PDT/PDL (PDL at 10 J/cm2). To assess changes in microvascular blood flow, laser speckle imaging was performed before, immediately after, and 18 hours post-intervention. RESULTS: Epidermal irradiation was accomplished without blistering, scabbing or ulceration. A reduction in perfusion was achieved in all intervention groups. PDT/PDL at 7 J/cm2 resulted in the greatest reduction in vascular perfusion (56%). CONCLUSIONS: BPD PDT can achieve safe and selective vascular flow reduction. PDT/PDL can enhance diminution of microvascular blood flow. Our results suggest that PDT and PDT/PDL should be evaluated as alternative therapeutic options for treatment of hypervascular skin lesions including port wine stain birthmarks.     

Treatment of Dermatofibroma with a 600 nm Pulsed Dye Laser

BACKGROUND: Dermatofibroma (DF) is one of the most basic and common dermatologic diseases treated by practicing dermatologists on a daily basis. Although benign, it can be pruritic or tender. Furthermore, it is difficult to treat effectively with optimal cosmetic outcomes. OBJECTIVE: We report a safe, effective, and cosmetically superior method of treating DF with the 600 nm pulsed dye laser (PDL). METHODS: We used a 600 nm PDL to treat 20 lesions from 18 Caucasian patients. The laser parameter was set at a fluence of 7 J/cm2, a spot size of 7 mm and a pulse duration of 1.5 ms. Each lesion was treated three times at a 6- to 8-week interval. For each treatment, the lesion was double pulsed with a 20 to 30% overlap. Clinical improvement was graded by a single examiner in evaluating three clinical parameters: color, size/volume, and symptoms. For each parameter, improvement was ranked as no improvement, partial improvement, and complete response. RESULTS: All 18 patients (17 women) completed the study. For the volume/size parameter, 15 of 20 lesions (75%) showed complete response. For improvement in color, 12 of 20 patients (60%) showed complete response. Only six lesions were symptomatic (i.e., tender and irritating), and all six lesions showed complete resolution of symptoms after the PDL treatments. After each treatment, all patients experienced blistering, crusting, and purpura that usually resolved after 10 days. CONCLUSIONS: We have demonstrated for the first time that PDL (600 nm and 1.5 ms pulse duration) is an effective and safe treatment of DF. It may provide superior cosmetic outcomes compared with other modalities such as surgical excision.