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Nd:YAG water mist laser treatment for giant gestational gingival tumor: A case report
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作者 Hong-Yu Chen Jun-Ji Xu +1 位作者 Xiu-Lin Chang Pei Wu 《World Journal of Clinical Cases》 SCIE 2024年第11期1974-1979,共6页
BACKGROUND This case of gestational gingival tumor is huge and extremely rare in clinical practice.As the growth location of this gingival tumor is in the upper anterior tooth area,it seriously affects the pregnant wo... BACKGROUND This case of gestational gingival tumor is huge and extremely rare in clinical practice.As the growth location of this gingival tumor is in the upper anterior tooth area,it seriously affects the pregnant woman's speech and food,causing great pain to the patient.The use of Nd:YGA water mist laser to remove the gingival tumor resulted in minimal intraoperative bleeding,minimal adverse reactions,and good postoperative healing,which is worthy of clinical promotion and application.CASE SUMMARY The patient,a pregnant woman,reported a large lump in her mouth on the first day of postpartum treatment.Based on medical history and clinical examination,the diagnosis was diagnosed as gestational gingival tumor.Postoperative pathological biopsy also confirmed this diagnosis.The use of Nd:YAG water mist laser to remove the tumor resulted in minimal intraoperative bleeding,clear surgical field of view,short surgical time,and good postoperative healing.CONCLUSION In comparison to traditional surgery,Nd:YAG water mist laser surgery is minimally invasive,minimizes cell damage,reduces bleeding,ensures a clear field of vision,and virtually eliminates postoperative edema,carbonization,and the risk of cross infection.It has unique advantages in oral soft tissue surgery for pregnant patients.Therefore,the clinical application of Nd:YAG water mist laser for the treatment of gestational gingival tumors is an ideal choice. 展开更多
关键词 Gestational gingival tumor nd:yag water mist laser Granulomatous gingival tumor Minimally invasive dentistry Pregnancy related diseases Oral soft tissue surgery Case report
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芪参补气活血养颜汤联合Q开关Nd∶YAG激光治疗女性黄褐斑的美学效果观察
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作者 王姿 秦宗碧 蔡翔 《中国美容医学》 CAS 2024年第4期108-111,共4页
目的:探讨芪参补气活血养颜汤联合Q开关Nd∶YAG激光治疗女性黄褐斑的美学效果。方法:选取笔者医院2019年1月-2022年1月收治的80例黄褐斑女性作为研究对象,按照随机数字表法分为观察组42例(采用芪参补气活血养颜汤联合Q开关Nd∶YAG 1064... 目的:探讨芪参补气活血养颜汤联合Q开关Nd∶YAG激光治疗女性黄褐斑的美学效果。方法:选取笔者医院2019年1月-2022年1月收治的80例黄褐斑女性作为研究对象,按照随机数字表法分为观察组42例(采用芪参补气活血养颜汤联合Q开关Nd∶YAG 1064 nm激光治疗)和对照组38例(采用Q开关Nd∶YAG 1064 nm激光治疗)。观察两组的临床疗效,中医症状积分,皮肤状况,黄褐斑面积及颜色,不良反应发生率。结果:治疗后,观察组患者的总有效率为97.62%,高于对照组患者的84.21%(P<0.05)。治疗后,观察组患者情绪低落、胸胁胀痛、经行乳胀、口苦咽干等上述中医症状积分均低于对照组患者(P<0.05)。治疗后,观察组黑素指数、红斑指数及皱纹指数均低于对照组(P<0.05)。治疗后,观察组黄褐斑面积及颜色评分均低于对照组(P<0.05)。治疗后,观察组患者的总不良反应发生率与对照组患者比较差异无统计学意义(P>0.05)。结论:芪参补气活血养颜汤联合Q开关Nd∶YAG1064 nm激光能够提高黄褐斑治疗的临床疗效,改善患者临床症状,改善皮肤状况,减少黄褐斑面积及颜色,安全性较高,值得临床推广。 展开更多
关键词 芪参补气活血养颜汤 Q开关ndyag激光 黄褐斑 美学效果 皮肤状况
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Pulsed Nd:YAG laser cladding of high silicon content coating on low silicon steel 被引量:4
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作者 Danyang Dong Changsheng Liu Bin Zhang Jun Miao 《Journal of University of Science and Technology Beijing》 CSCD 2007年第4期321-326,共6页
A pulsed Nd:YAG (yttrium aluminum garnet) laser-based technique was employed to clad low silicon steel with preplaced Si and Fe mixed powders for high Si content. The surface morphology, microstructural evolution, ... A pulsed Nd:YAG (yttrium aluminum garnet) laser-based technique was employed to clad low silicon steel with preplaced Si and Fe mixed powders for high Si content. The surface morphology, microstructural evolution, phase composition, and Si distribution, within the obtained cladding coatings, were characterized by optical microscopy (OM), field emission scanning electron microscopy (FE-SEM), with associated energy dispersive spectroscopy (EDS), transmission electron microscopy (TEM), and X-ray diffraction (XRD). The microhardness was also measured along the depth direction of the specimens, A crack- and pore-free cladding coating through excellent metallurgical bonding with the substrate was successfully prepared on low silicon steel by means of optimized single-track and multi-track laser cladding. The phases of the coating are a-Fe, T-Fe, and FeSi. The high microhardness of the lasercladding zone is considered as an increase in Si content and as the refined microstructure produced by the laser treatment. The Si contents of the cladding coatings were about 5.8wt% in the single-track cladding and 6.5wt% in the multi-track cladding, respectively. 展开更多
关键词 silicon steel pulsed nd:yag laser cladding high silicon content coating MICROSTRUCTURE MICROHARDNESS
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Experimental study of electro-optical-switched pulsed Nd:YAG laser 被引量:1
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作者 A Maleki M Kavosh Tehrani +1 位作者 H Saghafifar M H Moghtader Dindarlu 《Chinese Physics B》 SCIE EI CAS CSCD 2016年第3期210-214,共5页
We report the specification of a compact and stable side diode-pumped Q-switched pulsed Nd:YAG laser. We ex- perimentally study and compare the performance of the pulsed Nd:YAG laser in the free-running and Q-switch... We report the specification of a compact and stable side diode-pumped Q-switched pulsed Nd:YAG laser. We ex- perimentally study and compare the performance of the pulsed Nd:YAG laser in the free-running and Q-switched modes at different pulse repetition rates from 1 Hz to 100 Hz. The laser output energy is stabilized by using a special configu- ration of the optical resonator. In this laser, an unsymmetrical concave-concave resonator is used and this structure helps the mode volume to be nearly fixed when the pulse repetition rate is increased. According to the experimental results in the Q-switched operation, the laser output energy is nearly constant around 70 mJ with an FWHM pulse width of 7 ns at 100 Hz. The optical-to-optical conversion efficiency in the Q-switched regime is 17.5%. 展开更多
关键词 side diode-pumped nd:yag laser concave-concave resonator electro-optical Q-switched laser
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Controlled Laser Transformation Hardening of Martensitic Stainless Steel by Pulsed Nd:YAG Laser 被引量:2
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作者 B.Mahmoudi A.R.Sabour Aghdam M.J.Torkamany 《Journal of Electronic Science and Technology of China》 2010年第1期87-90,共4页
Laser transformation hardening (LTH) was applied to the surface of the AISI 420 martensitic stainless steel by a pulsed Nd:YAG laser to obtain optimum hardness. The influences of process parameters (laser pulse en... Laser transformation hardening (LTH) was applied to the surface of the AISI 420 martensitic stainless steel by a pulsed Nd:YAG laser to obtain optimum hardness. The influences of process parameters (laser pulse energy, duration time, and travel speed) on the depth and hardness of laser treated area were investigated. Image analysis of SEM microstructure of AISI 420 showed that plate-like carbide have almost fully and (30-40)% of globular carbide particles dissolved into the matrix after laser transformation hardening by pulsed laser and the microstructure was refined to obtain controlled tempered martensite microstructure with 450 VHN hardness. 展开更多
关键词 laser transformation hardening martensitic stainless steel martensite microstructure pulsed nd:yag laser.
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LD环状侧面均匀泵浦Nd∶YAG激光振荡器
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作者 韩昌昊 穆宇 +4 位作者 罗辉 韩隆 方聪 王思博 魏磊 《激光与红外》 CAS CSCD 北大核心 2024年第2期179-184,共6页
激光二极管(Laser Diode,LD)环状侧面均匀泵浦的激光振荡器具有结构简单、光束质量高、单脉冲能量大等特点,常常在高能脉冲固体激光器中作为主振荡功率放大(MOPA)结构的振荡器,一直是国内外科研人员研究的重要方向之一。本论文通过Zema... 激光二极管(Laser Diode,LD)环状侧面均匀泵浦的激光振荡器具有结构简单、光束质量高、单脉冲能量大等特点,常常在高能脉冲固体激光器中作为主振荡功率放大(MOPA)结构的振荡器,一直是国内外科研人员研究的重要方向之一。本论文通过Zemax软件对不同激光二极管排列方式以及不同工作物质吸收系数对吸收光场的影响的进行了仿真。基于仿真结果,设计了一种20个bar条串联的环状侧面泵浦结构,以提高晶体吸收的均匀性。通过该环状侧泵结构,结合超高斯非稳腔设计,搭建了一种双棒串接激光振荡器进行实验研究。该振荡器实现了在100 Hz重复频率下,单脉冲能量为496 mJ、脉冲宽度为12.4 ns的1064 nm激光输出,光束质量优于9 mm·mrad,光-光转换效率为18.5%。并且该振荡器可以维持光轴稳定不变的同时,实现20 ns脉宽以内变档可调。实验结果证明了该环状侧面均匀泵浦结构可靠有效,为MOPA结构振荡器选取提供了一种有效的方案。 展开更多
关键词 激光二极管 环状侧面泵浦 ndyag 振荡器 大脉冲能量
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A 526 mJ Subnanosecond Pulsed Hybrid-Pumped Nd:YAG Laser
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作者 石江鹏 辛建国 +2 位作者 刘军 陈家斌 Sher Zaman 《Chinese Physics Letters》 SCIE CAS CSCD 2017年第7期105-108,共4页
A hybrid-pumped Nd:YAG pulse laser with a double-pass two-rod configuration is presented. The focal length of offset lens is particularly studied to compensate for the thermal lens effect and depolarization. For inpu... A hybrid-pumped Nd:YAG pulse laser with a double-pass two-rod configuration is presented. The focal length of offset lens is particularly studied to compensate for the thermal lens effect and depolarization. For input pulse energy of 141 μJ with pulse duration of 754ps, the pulse laser system delivers 526mJ pulse energy and 728ps pulse width output at lO Hz with pulse profile shape preservation. The energy stability of the laser pulse is less than 3%, and the beam quality factor M2 is less than 2.26. 展开更多
关键词 yag length A 526 mJ Subnanosecond pulsed Hybrid-Pumped nd:yag laser nd
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Structural and Optical Properties of Ce^(3+), Yb^(3+) Co-doped YAG Films by Pulsed Laser Deposition
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作者 王银珍 LI Ning +5 位作者 DUAN Pingping DI Juqing ZHANG Liaolin CHU Benli HE Qinyu QIU Jianrong 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2015年第4期660-664,共5页
Ce3+, Yb3+ co-doped Y3Al5O12 films were prepared by pulse laser deposition. X-ray diffraction, X-ray photoelectron spectroscopy, photoluminescence spectra were used to characterize their structural and luminescent p... Ce3+, Yb3+ co-doped Y3Al5O12 films were prepared by pulse laser deposition. X-ray diffraction, X-ray photoelectron spectroscopy, photoluminescence spectra were used to characterize their structural and luminescent properties. Near-infrared quantum cutting from the films was observed via a cooperative energy transfer from Ce3+ to Yb3+ ions. The high quantum efficiency of the films implies that Ce3+,Yb3+ co-doped Y3A15O12 films have potential application by tuning the solar spectrum to enhance the efficiency of silicon solar cells. 展开更多
关键词 yag Ce3+ yb3+ films pulsed laser deposition DOWNCONVERSION
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双波长LD泵浦Nd^(3+)∶YAG免温控被动调Q激光器的研究
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作者 吴航 窦飞飞 +4 位作者 陈南亦 徐欢天 杨炳德 司光芙 董潮涌 《激光与红外》 CAS CSCD 北大核心 2024年第5期679-684,共6页
传统的固体激光器体积、重量大,功耗高,限制了其在空间受限设备中的应用。被动调Q的LD泵浦免温控固体激光器省去了复杂的温度控制装置,调Q机构简单,能够满足复杂温度环境的特殊应用场景的小型化、低功耗要求。提出了基于双波长LD泵浦实... 传统的固体激光器体积、重量大,功耗高,限制了其在空间受限设备中的应用。被动调Q的LD泵浦免温控固体激光器省去了复杂的温度控制装置,调Q机构简单,能够满足复杂温度环境的特殊应用场景的小型化、低功耗要求。提出了基于双波长LD泵浦实现宽温度范围免温控阈值自适应的1.06μm激光脉冲输出方法。基于Nd∶YAG晶体设计了角锥棱镜谐振腔,仿真分析了LD泵浦源到激光棒的面心距对热负载的影响,并确定4 mm的最佳面心距。数值分析了相同泵浦功率下-40~60℃温度范围内激光静态能量输出变化,以及不同初始透过率的可饱和吸收体对激光阈值脉宽的影响。计算结果表明在-37℃~60℃范围内,阈值脉宽都在200μs以下,阈值脉宽最低点达到了29.4μs。构建主波实时探测的阈值自适应调节装置并搭建实验系统,实验结果表明,在温度范围为-35~60℃时,阈值脉宽变化范围为40~180μs。采用激光腔体一体加工成型,应用轻量化的铝合金材料,实现工程化应用,体积83.5 mm×44 mm×29.5 mm,重量约为230 g。在23.8%初始透过率的饱和吸收体条件下实现单脉冲输出能量42 mJ,脉冲宽度5.2 ns。 展开更多
关键词 被动调Q ndyag激光器 免温控 双波长泵浦 调Q阈值
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低通量Q开关Nd∶YAG激光联合微针导入氨甲环酸治疗黄褐斑
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作者 陈文文 简杏玲 +1 位作者 王洁仪 于波 《福建医科大学学报》 2024年第2期122-128,共7页
目的评估低通量Q开关Nd∶YAG(QSNY)激光单一治疗与其联合微针导入氨甲环酸治疗黄褐斑的疗效差别,并基于皮肤镜分型分析不同类型黄褐斑的最佳治疗方式。方法收集2022年1月—2023年12月就诊的黄褐斑患者的临床资料,比较QSNY激光单一治疗组... 目的评估低通量Q开关Nd∶YAG(QSNY)激光单一治疗与其联合微针导入氨甲环酸治疗黄褐斑的疗效差别,并基于皮肤镜分型分析不同类型黄褐斑的最佳治疗方式。方法收集2022年1月—2023年12月就诊的黄褐斑患者的临床资料,比较QSNY激光单一治疗组(对照组,23例)与QSNY激光联合微针导入氨甲环酸治疗组(联合组,23例)治疗3次后改良黄褐斑面积和严重程度指数(mMASI)评分、皮肤镜检查总评分(TDS)、医生临床评估(PGA)和不良反应的发生率。结果2组患者治疗后mMASI评分均降低,联合组的mMASI评分改善优于对照组(P<0.05);2组患者治疗后TDS均降低,联合组改善程度更佳,差别有统计学意义(P<0.05)。与治疗前比较,联合组治疗后毛细血管扩张明显改善,差别有统计学意义(P<0.001)。2组患者的PGA评分比较,差别无统计学意义(P>0.05)。2组患者治疗后均未发现明显的不良反应。结论QSNY激光联合微针导入氨甲环酸治疗黄褐斑的疗效优于单一激光治疗,前者对血管增生和表皮色素沉着明显的黄褐斑更有利。 展开更多
关键词 黄褐斑 Q开关ndyag激光 微针 氨甲环酸 联合治疗
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腔外旋转泵浦的Nd∶YAG固体激光器研究
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作者 张波 李月飞 +3 位作者 曹蔚琳 黄晓杰 张大伟 李建郎 《光学仪器》 2024年第3期87-94,共8页
固体激光器的热管理仍然是高功率激光系统发展的一个持续挑战。在激光系统中增益介质和泵浦光之间引入相对运动是一种高效的热管理方案。针对静止泵浦,旋转增益介质泵浦以及泵浦光旋转泵浦3种泵浦方式,借助有限元数值模拟方法分析了Nd∶... 固体激光器的热管理仍然是高功率激光系统发展的一个持续挑战。在激光系统中增益介质和泵浦光之间引入相对运动是一种高效的热管理方案。针对静止泵浦,旋转增益介质泵浦以及泵浦光旋转泵浦3种泵浦方式,借助有限元数值模拟方法分析了Nd∶YAG晶体的温度分布。泵浦光以800 r/min旋转时,在35 W泵浦功率下,使用标准的热沉冷却技术,晶体的最高温度达到约36℃,仅增加约16℃,这远低于静止泵浦时的142℃。实验设计并演示了一种腔外旋转泵浦的Nd∶YAG激光器,得到了12.2 W的1 064 nm连续输出,斜率效率为37.2%,这大于静止时的35.1%,实验结果与理论结果相符合。研究表明,腔外旋转泵浦的固体激光器拥有高效的热管理。 展开更多
关键词 腔外旋转泵浦 ndyag激光器 热效应 有限元分析
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Nd∶YAG和Er∶YAG激光联合辅助治疗伴2型糖尿病的慢性牙周炎的临床疗效分析
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作者 朱晓茹 逄键梁 +2 位作者 刘冰 吴莹莹 常晓燕 《实用口腔医学杂志》 CAS CSCD 北大核心 2024年第3期430-433,共4页
纳入合并2型糖尿病的慢性牙周炎患者30例,采用分口设计法,将同患者左侧牙列设为试验组,行牙周基础治疗,以及Nd∶YAG和Er∶YAG激光联合辅助治疗,右侧牙列设为对照组,仅行牙周基础治疗。治疗前后检测牙周及CBCT影像指标,并行组间比较。治... 纳入合并2型糖尿病的慢性牙周炎患者30例,采用分口设计法,将同患者左侧牙列设为试验组,行牙周基础治疗,以及Nd∶YAG和Er∶YAG激光联合辅助治疗,右侧牙列设为对照组,仅行牙周基础治疗。治疗前后检测牙周及CBCT影像指标,并行组间比较。治疗前2组全部指标无统计学差异(P>0.05)。治疗后3个月,试验组的出血指数(BI)和探诊深度(PD)明显低于对照组(P<0.05);治疗后6个月,试验组的BI、PD以及附着丧失(AL)明显低于对照组,牙槽骨内剩余牙根表面积和牙根体积明显高于对照组(P<0.05)。Nd∶YAG和Er∶YAG激光联合辅助下的牙周基础治疗较单纯牙周基础治疗对伴2型糖尿病的慢性牙周炎疗效更为显著。 展开更多
关键词 ndyag激光 Er∶yag激光 2型糖尿病 慢性牙周炎
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后发性白内障患者行Nd∶YAG激光术后视觉质量
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作者 安通 刘颖 +1 位作者 孙红双 张白雪 《国际眼科杂志》 CAS 2024年第10期1655-1658,共4页
目的:探究角膜/屈光分析仪OPD-Scan Ⅲ评估后发性白内障患者行Nd∶YAG激光术后视觉质量。方法:回顾性研究。选取2021-05/2023-04于我院行Nd∶YAG激光后囊膜切开术治疗的后发性白内障患者98例98眼,采用角膜/屈光分析仪OPD-Scan Ⅲ获取患... 目的:探究角膜/屈光分析仪OPD-Scan Ⅲ评估后发性白内障患者行Nd∶YAG激光术后视觉质量。方法:回顾性研究。选取2021-05/2023-04于我院行Nd∶YAG激光后囊膜切开术治疗的后发性白内障患者98例98眼,采用角膜/屈光分析仪OPD-Scan Ⅲ获取患者高阶像差参数(彗差、球差和三叶草像差)和视觉质量参数[斯特列尔比(SR)和人眼调制传递函数(MTF)曲线中4 mm面积比(AR)],比较患者术前,术后1 wk,3 mo时视力、高阶像差和视觉质量。结果:纳入患者手术前后裸眼远视力(UDVA)、裸眼中视力(UIVA)、裸眼近视力(UNVA)、彗差、球差、三叶草、SR和AR比较均有差异(均P<0.001)。术后1 wk,3 mo UDVA、UIVA、UNVA、彗差、球差、三叶草、SR和AR与术前比较均有差异(均P<0.05)。术后3 mo UDVA、UIVA、UNVA、SR和AR与术后1 wk比较均有差异(均P<0.05),术后3 mo彗差、球差、三叶草与术后1 wk比较均无差异(均P>0.05),术后3 mo球差、三叶草与SR均呈负相关(r_(s)=-0.427,P=0.009;r_(s)=-0.436,P=0.010),三叶草与AR呈负相关(r_(s)=-0.406,P=0.015)。结论:后发性白内障患者Nd∶YAG激光术后视力改善,使用角膜/屈光分析仪OPD-Scan Ⅲ系统反映患者视觉质量具有较高的临床价值。 展开更多
关键词 角膜/屈光分析仪 视觉治疗 后发性白内障 ndyag激光 后囊膜切开术
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Nd∶YAG激光周边虹膜切开对PACG急性发作期眼压的影响及安全性观察
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作者 王红燕 卢艳 +1 位作者 刘小峰 刘叶 《临床和实验医学杂志》 2024年第3期317-321,共5页
目的 探究Nd∶YAG激光周边虹膜切开对原发性闭角型青光眼(PACG)急性发作期的治疗效果及安全性。方法 前瞻性选取2020年1月至2022年1月在首都医科大学附属北京世纪坛医院接受治疗的PACG急性发作期患者102例作为研究对象,按照随机数字表... 目的 探究Nd∶YAG激光周边虹膜切开对原发性闭角型青光眼(PACG)急性发作期的治疗效果及安全性。方法 前瞻性选取2020年1月至2022年1月在首都医科大学附属北京世纪坛医院接受治疗的PACG急性发作期患者102例作为研究对象,按照随机数字表法将其分为研究组和对照组,每组各51例。对照组予以传统药物进行诊治,研究组接受Nd∶YAG激光周边虹膜切开治疗。记录并比较两组患者的术前,术后1、3、6、12个月眼压变化,术前,术后1、3、6、12个月疼痛视觉模拟评分法(VAS)评分、角膜内皮细胞[平均面积(AVE)、最大面积(MAX)、最小面积(MIN)、细胞密度(CD)、面积变异系数(CV)、面积标准偏差(SD)]变化,治疗后视野、房角情况以及并发症发生情况。结果 研究组患者术后1、3、6、12个月的眼压分别为(17.55±2.09)、(17.56±2.04)、(17.89±2.16)、(18.33±2.98)mmHg,均低于对照组[(19.87±1.98)、(20.55±1.78)、(17.89±2.16)、(18.33±2.98)mmHg],差异均有统计学意义(P<0.05)。研究组患者术后1、3、6、12个月的VAS评分分别为(4.03±0.64)、(3.22±0.15)、(2.31±0.14)、(1.99±0.13)分,均低于对照组[(4.66±0.74)、(3.55±0.12)、(2.98±0.11)、(2.32±0.15)分],差异均有统计学意义(P<0.05)。术后1个月,研究组患者的CD、CV、AVE、SD均高于对照组,MAX、MIN、六角形细胞百分数均低于对照组,差异均有统计学意义(P<0.05)。研究组患者治疗后视野缺损进展、开放角度减小发生率分别为3.92%、7.84%,均低于对照组(17.65%、23.53%),房角增大、开放角度>5°发生率分别为90.20%、62.75%,均高于对照组(45.10%、13.73%),差异均有统计学意义(P<0.05)。随访期内,两组患者发生高眼压、眼角膜水肿、眼前房渗出、眼前房出血情况及总并发症发生率比较,差异均无统计学意义(P>0.05)。结论 对于PACG急性发作期的患者,Nd∶YAG激光周边虹膜切开治疗较传统药物治疗在眼压控制、疼痛缓解以及视野缺损进展和房角变化等方面具有更显著的效果,且安全性较好,是一种有效且安全的PACG急性发作期治疗手段。 展开更多
关键词 ndyag激光 周边虹膜切开 闭角型青光眼 眼压 安全性
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重组人表皮生长因子面膜联合Q开关Nd∶YAG激光对雀斑患者皮肤美观度及复发情况的影响
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作者 孙明山 骆亚辉 《中国美容医学》 CAS 2024年第10期50-53,共4页
目的:探讨重组人表皮生长因子面膜联合Q开关Nd∶YAG激光对雀斑患者皮肤美观度及复发情况的影响。方法:将80例2020年1月-2022年12月重庆三峡医药高等专科学校附属人民医院皮肤科收治的雀斑患者随机纳入对照组(40例)和试验组(40例),分组... 目的:探讨重组人表皮生长因子面膜联合Q开关Nd∶YAG激光对雀斑患者皮肤美观度及复发情况的影响。方法:将80例2020年1月-2022年12月重庆三峡医药高等专科学校附属人民医院皮肤科收治的雀斑患者随机纳入对照组(40例)和试验组(40例),分组方法选择随机数字表法。对照组给予Q开关Nd∶YAG激光进行治疗,试验组在对照组的基础上给予重组人表皮生长因子面膜进行治疗,两组均治疗3个月,并随访5个月。比较两组治疗3个月后的疗效,治疗前和治疗3个月后的皮肤特征、皮肤美观度,不良反应,随访期间的复发情况及随访5个月后的满意度。结果:试验组治疗3个月后的总有效率为95.00%,高于对照组的80.00%(P<0.05)。治疗3个月后,两组皱纹、棕色斑、毛孔、纹理、斑点及皮损评分、肤色均一性、皮肤色泽评分与治疗前比较降低,试验组低于对照组(P<0.05)。试验组治疗期间的不良反应总发生率为5.00%,与对照组(7.50%)比较,差异无统计学意义(P>0.05);随访期间的复发率为2.50%,与对照组(5.00%)比较,差异无统计学意义(P>0.05)。试验组随访5个月后的总满意率为95.00%,高于对照组的77.50%(P<0.05)。结论:重组人表皮生长因子面膜联合Q开关Nd∶YAG激光可改善雀斑患者皮肤特征及美观度,进而有利于提高患者疗效及满意度,且并未明显增加患者不良反应及复发风险。 展开更多
关键词 雀斑 重组人表皮生长因子 Q开关ndyag激光 皮肤美观度 复发
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532nm激光联合Nd∶YAG激光行虹膜周边切除术的效果分析
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作者 吴伟柯 《中外医疗》 2024年第10期59-62,共4页
目的探究对闭角型青光眼患者实施532 nm激光联合Nd∶YAG激光行虹膜周边切除术的作用。方法方便选取2020年1月—2023年12月宜兴市中医医院收治的82例闭角型青光眼患者为研究对象,采用盲摸双色球法分为观察组和参照组,各41例。参照组单独... 目的探究对闭角型青光眼患者实施532 nm激光联合Nd∶YAG激光行虹膜周边切除术的作用。方法方便选取2020年1月—2023年12月宜兴市中医医院收治的82例闭角型青光眼患者为研究对象,采用盲摸双色球法分为观察组和参照组,各41例。参照组单独用Nd∶YAG激光行虹膜周边切除术治疗,观察组先给予532 nm激光烧灼虹膜周边隐窝,再使用Nd∶YAG激光行虹膜周边切除术。比较两组手术情况、治疗效果及眼压水平。结果观察组激光总点数、激光能量及虹膜一次穿透率明显优于参照组,差异有统计学意义(P均<0.05)。观察组治疗总有效率(97.56%)高于参照组(82.93%),差异有统计学意义(χ^(2)=4.987,P<0.05)。观察组术后1 h、术后7 d眼压水平明显优于参照组,差异有统计学意义(P均<0.05)。结论532 nm激光联合Nd∶YAG激光行虹膜周边切除术能够明显改善青光眼患者的手术情况、提高治疗效果,眼压得到明显降低。 展开更多
关键词 532NM激光 nd:yag激光 虹膜周边切除术 手术情况 治疗效果 眼压水平
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Efficacy and Safety of Alexandrite and Nd:YAG Laser Combination in Permanent Hair Removal
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作者 Şule Gençoğlu 《International Journal of Clinical Medicine》 2023年第9期419-427,共9页
Background and Objective: Unwanted hair growth is a discomforting issue affecting both genders. People have tried various methods to get rid of this situation. This study aims to evaluate the efficacy and safety of a ... Background and Objective: Unwanted hair growth is a discomforting issue affecting both genders. People have tried various methods to get rid of this situation. This study aims to evaluate the efficacy and safety of a combined Alexandrite and Nd:YAG laser treatment for permanent hair removal, drawing insights from existing literature. Materials and Methods:This study included a total of 2127 patients (302 males, 1825 females) aged 18 - 65, with complete data, who underwent hair removal treatment between December 2018 and April 2021. These patients were treated using the Duetta laser system (Quanta system, Samarate, Italy), combining Alexandrite 755 nm and Nd:YAG 1064 nm wavelengths. The patients’ skin types were classified according to the Fitzpatrick classification scale. Target area/areas for laser hair removal was/were determined. Laser parameters, pulse counts, pain levels assessed through the Visual Pain Scale (VPS), and patient satisfaction were documented based on skin types. Findings: Across various skin types, Types I - II exhibited the highest treatment success rates (87%), with the axillary region achieving the highest rate (83%) and the face region achieving the lowest rate (75%). Pain scale analysis indicated that 98% of patients tolerated the procedure well. Patient satisfaction levels exceeded 90%. Evaluation of complication rates revealed minimal occurrences. Conclusion: The combined Alexandrite and Nd:YAG laser system demonstrates both efficacy and safety across diverse skin types, attributed to its notable success rates, minimal adverse effects, and high patient tolerance. 展开更多
关键词 laser Hair Removal Alexandrite laser nd:yag laser
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Clinical usefulness of transpapillary removal of common bile duct stones by frequency doubled double pulse Nd:YAG laser 被引量:20
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作者 Tae Hyeon Kim Hyo Jeong Oh +2 位作者 Chang-Soo Choi Dong Han Yeom Suck Chei Choi 《World Journal of Gastroenterology》 SCIE CAS CSCD 2008年第18期2863-2866,共4页
AIM: To study the efficacy and the safety of laser lithotripsy without direct visual control by using a balloon catheter in patients with bile duct stones that could not be extracted by standard technique. METHODS: Th... AIM: To study the efficacy and the safety of laser lithotripsy without direct visual control by using a balloon catheter in patients with bile duct stones that could not be extracted by standard technique. METHODS: The seventeen patients (7 male and 10 female; mean age 67.8 years) with difficult common bile duct (CBD) stones were not amenable for conventional endoscopic maneuvers such as sphincterotomy and mechanical lithotripsy were included in this study. Laser wavelengths of 532 nm and 1064 nm as a double pulse were applied with pulse energy of 120 mJ. The laser fiber was advanced under fluoroscopic control through the ERCP balloon catheter. Laser lithotripsy was continued until the fragment size seemed to be less than 10 mm. Endoscopic extraction of the stones and fragments was performed with the use of the Dormia basket and balloon catheter. RESULTS: Bile duct clearance was achieved in 15 of 17 patients (88%). The mean number of treatment sessions was 1.7 ± 0.6. Endoscopic stone removal could not be achieved in 2 patients (7%). Adverse effects were noted in three patients (hemobilia, pancreatitis, and cholangitis). CONCLUSION: The Frequency Doubled Double Pulse Nd:YAG (FREDDY) laser may be an effective and safe technique in treatment of difficult bile duct stones. 展开更多
关键词 Bile duct stones Frequency doubled double pulse nd:yag laser Transpapillary removal Mechanical lithotripsy Balloon catheter
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Influence of Ambient Gas and Oxygen Pressure on Nd∶LuVO_4 Films Grown by Pulsed Laser Deposition
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作者 Wang Xiaoxia Li Hongxia +3 位作者 Zhang Huaijin Wang Jiyang Shen Mingrong Fang Liang 《Journal of Rare Earths》 SCIE EI CAS CSCD 2005年第4期454-454,共1页
The ( 200 ) dominated Nd: LuVO4 films were fabricated successfully on polished SlOE under different ambient gases and different oxygen pressures. By XRD, it is shown that a film with good crystallization is deposit... The ( 200 ) dominated Nd: LuVO4 films were fabricated successfully on polished SlOE under different ambient gases and different oxygen pressures. By XRD, it is shown that a film with good crystallization is deposited under oxygen and the optimal pressure is 20 Pa. The surface morphology of Nd:LuVO4 films was observed by AFM, and it is found that oxygen pressure influences the surface morphology of Nd :LuVO4 films. The ratio of content of Nd:LuVO4 films was estimated according to the yields of Lu and V by using RBS spectra, this ratio is in good agreement with the target composition. The effective index refractive of every mode is 2.0044, 1.7098, measured by prism coupler method. 展开更多
关键词 pulsed laser deposition nd LuVO4 films oxygen pressure rare earths
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Pump pulse characteristics of quasi-continuous-wave diode-side-pumped Nd:YAG laser
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作者 Zexin Song Qi Bian +5 位作者 Yu Shen Keling Gong Nan Zong Qingshuang Zong Yong Bo Qinjun Peng 《Chinese Physics B》 SCIE EI CAS CSCD 2022年第5期355-359,共5页
The influence of pumping laser pulse on the property of quasi-continuous-wave(QCW)diode-side-pumped Nd:YAG laser is investigated theoretically and experimentally.Under remaining a fixed duty cycle,the average output p... The influence of pumping laser pulse on the property of quasi-continuous-wave(QCW)diode-side-pumped Nd:YAG laser is investigated theoretically and experimentally.Under remaining a fixed duty cycle,the average output power increases,and the corresponding thermal focal length shorten with the increase of the pump pulse duration,which attributes to the decrease of the ratio of pulse buildup time to the pulse duration.At a pump power of 146 W,the laser output power changes from 65.1 W to 81.2 W when the pulse duration is adjusted from 150μs to 1000μs,confirming a significant enhancement of 24.7%.A laser rate equation model incorporating the amplified spontaneous emission is also utilized and numerically solved,and the simulated results agree well with the experimental data. 展开更多
关键词 pump pulse duration DIODE-SIDE-PUMPED pulsed nd:yag laser laser rate equation amplified spontaneous emission
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