Bibliografie tematiche / Pulsed laser treatment

Letteratura scientifica selezionata sul tema "Pulsed laser treatment"

Autore: Grafiati

Pubblicato: 1 giugno 2024

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Articoli di riviste sul tema "Pulsed laser treatment":

Kazachkov, E. L., O. V. Safronov, E. A. Kazachkova, E. N. Ignatieva, I. V. Safronova e L. B. Tarasova. "Morphological substantiation of laser exposure parameters and modes for surgical treatment of intrauterine pathology". Ural Medical Journal 22, n. 2 (29 aprile 2023): 24–33. http://dx.doi.org/10.52420/2071-5943-2023-22-2-24-33.

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Introduction No data on experimentally substantiated parameters and modes of diode laser radiation allowing a minimally traumatic surgical treatment of intrauterine pathology have been found in the literature.The aim of the investigation was to substantiate experimentally the optimum parameters and modes of diode laser radiation in the treatment of intrauterine pathology based on the study of morphological changes in the endometrium.Materials and methods 48 endometrial samples were exposed to 10-40 W diode laser power in a constant mode and 15 samples - in a pulsed mode with 3 different sets of laser exposure parameters. The data were statistically processed using Microsoft Excel spreadsheets, version 16.49. The differences were considered statistically significant at р<0.05.Results Width of the ablation zone, lateral coagulation and hyperthermic exposure zone was calculated at the most optimal parameters of laser energy (20 W), achieving adequate cutting and bleeding properties of the laser. The most effective in the pulsed mode of laser operation was 30 W amplitude power of radiation, the pulse duration of 100 ms, the duration of the interval between pulses of 50 ms, the average power of 20 W.Discussion Comparative analysis of morphometric parameters in the action of laser radiation in the constant mode with a radiation power of 20 W and in the pulsed mode with an average laser power of 20 W has shown that the structural parameters have significantly lower values in the pulsed laser mode.Conclusion Optimal cutting properties of the laser are observed when constant laser irradiation with a power of 20 W is used. The best cutting and bleeding properties were demonstrated by the pulsed laser mode with an average power of 20 W, amplitude power of 30 W, pulse duration of 100 ms, and inter-pulse interval of 50 ms.

Sadykov, R. R., A. S. Mardonov e S. S. Kobilov. "Treatment Outcomes for Hemangiomas Using Pulsed Dye Laser (595 nm) and Long-Pulse Alexandrite Laser (755 nm)". Surgical practice (Russia), n. 3 (7 ottobre 2023): 32–42. http://dx.doi.org/10.38181/2223-2427-2023-3-3.

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Aim. This study aimed to evaluate the therapeutic effiacy of two laser modalities, namely a 595-nm pulsed dye laser and a 755-nm long-pulse alexandrite laser, in the treatment of hemangiomas in patients with concurrent anemia.Methods. A total of 194 patients diagnosed with infantile hemangiomas, characterized by a thickness ranging from over 2 mm to under 8 mm, were included in this study. The patients were randomly assigned to two groups: the control group received treatment with the 595-nm pulsed dye laser, while the experimental group underwent sequential therapy, beginning with the 755-nm long-pulse alexandrite laser followed by the 595-nm pulsed dye laser.Results. In the control group, the overall treatment effiacy was 36.1 %. In contrast, the experimental group exhibited a signifiantly higher effiacy of 76.3 %. Statistical analysis of the abundance data was conducted using the Chi-square (X2) test, with results deemed statistically signifiant at a signifiance level of P < .05.Conclusion. Sequential therapy, which integrates both the 755-nm pulsed dye laser and the 595-nm pulsed dye laser, demonstrates remarkable effectiveness in treating hemangiomas, particularly in cases complicated by anemia.

Chang, Yunyoung Claire, Sang Ju Lee e Hye Jin Chung. "Treatment of post-pulsed dye laser purpura with pulsed dye laser". Journal of Cosmetic and Laser Therapy 20, n. 1 (29 agosto 2017): 21–23. http://dx.doi.org/10.1080/14764172.2017.1368563.

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Ristic, Slavica, Suzana Polic, Bojana Radojkovic e Joakim Striber. "Analysis of ceramics surface modification induced by pulsed laser treatment". Processing and Application of Ceramics 8, n. 1 (2014): 15–23. http://dx.doi.org/10.2298/pac1401015r.

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This paper presents the effects of laser light irradiation on the surface of ceramics dating from archaeological site Stubline (Obrenovac, Belgrade), Serbia. Two different pulsed lasers: TEA CO2 (10.6 ?m wavelength, pulse duration tp = 100 ns) and Nd:YAG (wavelengths 1064 nm and 532 nm, tp = 150 ps) have been used for surfaces treatment. Laser irradiation fluence was in the range of 1-20 J/cm2. Ceramics surface modifications induced by pulsed laser treatment were examined by scanning electron microscope, SEM, and the composition with energy dispersive X-ray, EDX, analysis. The tests were performed in order to obtain as much as possible information about the appropriate choice of materials and techniques for the further conservation and restoration of these items. The second objective was to determine the surface modifications induced by pulsed laser treatment above damage threshold (a safe cleaning laser fluence), as an important parameter in the use of lasers for the cleaning of cultural ceramic items.

Kotula, Paul G., e C. Barry Carter. "Characterization of NiO thin films on α-Al2O3 before and after heat treatment". Proceedings, annual meeting, Electron Microscopy Society of America 51 (1 agosto 1993): 1120–21. http://dx.doi.org/10.1017/s042482010015143x.

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The NiO-α-Al2O3 system is of interest as a model system for the study of phase boundaries and reaction kinetics in oxide ceramics. Such a system is of new importance when one of the constituents is a thin film because the reaction kinetics and its dependence on film microstructure is not well understood. Additionally, solid-state reactions between a thin film and single-crystal substrate can be used to produce buffer layers for heterojunctions.In the present study, thin films of NiO have been grown on single-crystal α-Al2O3 substrates by pulsed-laser ablation (PLA). The PLA system used a KrF (248nm) excimer laser operating at 350 mJ per pulse with a pulse repetition rate of 10 Hz. The laser beam was focused to a spot 1×2mm on the surface of rotating NiO pellet. Films were grown at nominal substrate temperatures of 750°C and oxygen pressures of about 10 mTorr. Films were grown both on bulk substrates for which 6000 laser pulses was used to produce 1000Å films and electron-transparent substrates for which 500 laser pulses was used to produce 80Å films.

Gargoom, Ali Mohamed, e Gamal Ahmed Duweb. "Ultra-pulsed Carbon Dioxide Laser for the Treatment of Melanocytic Nevi". Dermatology and Dermatitis 4, n. 2 (30 ottobre 2019): 01–04. http://dx.doi.org/10.31579/2578-8949/054.

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Abstract: Congenital melanocytic nevi (CMN) even small-sized as well as acquired melanocytic nevi (AMN) are of common cosmetic concerns and getting rid of them remain challenging. The aim of this study is to evaluate the efficacy and safety of the ultra-pulsed CO2 laser for the treatment of melanocytic nevi. 15 male and female Libyan patients with 16 AMN and 7 CMN were treated with multiple sessions of ultra-pulsed CO2 laser at 1-month intervals. Clinical response at 6 months after final treatment was graded as poor (< 50%), moderate (50–75%), good (> 75%) and excellent where the skin of the lesion returned normal as the rest of the surrounding skin. All treated nevi showed good to excellent cosmetic outcomes after 2 or 4 treatment sessions. The post laser complication were minimal and transit except for one atrophic scar. No recurrence of pigmentation during the six months of follow-up period. Conclusion: Ultra-pulsed CO2 laser seems to be effective and associate with minimum adverse side effect in the treatment of small CMN and AMN.

Babyuk, G. F. "Treatment of plasma coatings by laser remelting". E3S Web of Conferences 515 (2024): 03001. http://dx.doi.org/10.1051/e3sconf/202451503001.

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The article analyzes the effect of reflow and thermal cycling by laser beam on the structure and properties of plasma eutectic coatings. The facts of carbon diffusion into the solid phase at a distance of 150-200 microns with a laser pulse duration of 4 ms have been established. This is due to the high deformation rates that occur in the zone of thermal influence under pulsed laser action. This effect is aimed at increasing both the surface and volumetric strength of the sprayed coatings.

GROVE, JODIE. "Treatment of thread veins with intense pulsed light". Journal of Aesthetic Nursing 10, n. 7 (2 settembre 2021): 302–9. http://dx.doi.org/10.12968/joan.2021.10.7.302.

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This article will explore the treatment of thread veins using the well-established and common modality of intense pulsed light. The diagnosis of these veins and a variety of treatment options will also be detailed, and the mechanism of action of intense pulsed light will be analysed, explaining how it delivers satisfactory clinical and cosmetic outcomes. Transdermal laser and intense pulse light will also be compared.

Puchý, Viktor, František Kováč, Ivan Petryshynets e Ladislav Falat. "Effect of Microsecond Pulse Laser Modification on Electromagnetic Properties of Grain Oriented Silicon Steel". Materials Science Forum 891 (marzo 2017): 214–18. http://dx.doi.org/10.4028/www.scientific.net/msf.891.214.

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A microsecond pulsed laser beam was used to local magnetic domain modification of electrical grain oriented silicon steel. It was carried out using three different laser pulse regimes: a single pulse laser regime, a multipulse laser regime and a multipulse laser regime with modulation of laser pulses. The laser processing variables were pulse energy and and number of pulses. The samples were tested for nanohardness and coercivity before and after laser treatment. Light optical microscopy, scanning electron microscopy and magnetic force microscopy were used to observe the cross-sectional profile, surface of the samples, and magnetic domain visualization, respectively. The local laser treatment of grain oriented silicon steel surface has been studied in terms of its influence on the magnetic domains and coercivity. It was found that laser-modified samples showed coercivity improvement in comparison to the non-treated samples. The most significant improvement in coercivity was obtained in the modulated multipulse regime and negligible improvement in the single pulse laser regime. Three main effects responsible for the observed improvement were identified, namely: magnetic domain refinement, influence of number of laser pulses and shape of laser HAZ profile. The present work highlights on differences in the magnetic domain structure, microstructure of the laser modified material and basic electromagnetic and mechanical properties. In present study, the pulse laser surface processing was presented as a useful energy efficient alternative to other techniques e.g. mechanical scribing, electrical discharge scribing, plasma jet scribing, etc. The refined magnetic domains in electrosteels are responsible for the observed low coercivity, which indicates perspective application of the investigated laser modified steels in the power transformer cores with lower core losses.

Fratila, A. A. M., G. G. Gauglitz, A. Strohbücker e D. Radu. "Selective photothermolysis of spider veins and reticular varices with the long-pulsed Nd:YAG laser". Phlebologie 49, n. 01 (7 giugno 2019): 16–22. http://dx.doi.org/10.1055/a-0865-5296.

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AbstractThe therapy of spider veins, telangiectasia and reticular veins of lower extremities can be successfully performed with sclerotherapy or by using the long pulsed (LP) Nd:YAG laser. A matter of discussion, however, is how should laser parameters – such as wavelength, fluence, pulse duration, number of pulses – be utilized for effective and selective photothermolysis treatment without any side effects. The selective photothermolysis was introduced in 1983 by Anderson and Parrish 1 as a concept in laser treatment, meaning the selective thermal destruction of the target tissue (the chromophores – the light-absorption molecule is here the blood vessel) using a specific laser light wavelength, with minimal injury to surrounding tissue (the skin). The effectiveness of the selective photothermolysis process using an LP Nd:YAG laser at 1064 nm for the treatment of leg veins telangiectasias up to 2 mm in diameter, is the result of 30-years clinical experience sustained by patient satisfaction and photo documentation. The use of double and triple pulses seems to be the key of success in treating even larger vessels and has demonstrated superior safety and efficacy. Even bigger telangiectasias, reticular veins or other dilated veins on neckline, upper abdomen or in the face can be successfully treated with the LP Nd:YAG laser.

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Tesi sul tema "Pulsed laser treatment":

Koster, Petra Henriette Louise. "Analysis of portwine stain disfigurement and pulsed dye laser treatment results". [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2000. http://dare.uva.nl/document/55263.

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Pfefer, Thomas David Joshua. "Pulsed laser-induced thermal damage and the treatment of port wine stains /". Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.

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Smart, J. R. "The evaluation of Port Wine Stain Haemangioma before and after treatment by pulsed dye laser". Thesis, University of Strathclyde, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.381546.

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Hsu, Tiffany H. "In vivo occlusal caries prevention by pulsed carbon dioxide laser treatment quantified by QLF". Diss., Search in ProQuest Dissertations & Theses. UC Only, 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1465481.

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Chiu, Chun-hung, e 趙俊雄. "The role of dynamic cooling in improving clinical efficacy during pulsed dye laser treatment of port wine stain in Chinese". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2003. http://hub.hku.hk/bib/B26661482.

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Bastos, Jaqueline Silva [UNESP]. "Reparo ósseo em scaffolds de TI6AL4V sinterizados pela tecnologia de sinterização direta de metais a laser (DMLS) submetidos a tratamento de superfície associado à aplicação de ultrassom de baixa intensidade (LIPUS)". Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/138130.

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Submitted by Jaqueline Bastos (keca78@yahoo.com.br) on 2016-04-26T17:00:34Z No. of bitstreams: 1 TESE JAQUELINE S BASTOS - finalizando 180316.pdf: 13526973 bytes, checksum: d40891f9f50c56b18b4ee564f6453a39 (MD5)
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
O objetivo desse estudo in vivo foi verificar a resposta óssea de scaffolds porosos revestidos processados pela técnica de Sinterização Direta de Metais a laser (DMLS) associado à terapia de ultrassom de baixa intensidade. Os scaffolds foram processados empregando a técnica DMLS e tratados termicamente a 1000°C por 24 horas. Três tipos de tratamento de superfície foram avaliados: Alcalino, biomimético e imobilização de alendronato de sódio. Para o tratamento alcalino, as amostras foram imersas na solução de NaOH (5M) a 60ºC por 24 horas. O tratamento biomimético consistiu na imersão dos scaffolds em solução SBF (SimulatedBodyFluid) enquanto a imobilização do alendronato foi realizada a partir da imersão dos scaffolds em uma solução formada por SBF e medicamento durante 5 dias. As superfícies dos scaffolds foram avaliadas para cada etapa empregando microscopia eletrônica de varredura (MEV) e análise por difração de raios-X. Os scaffolds foram implantados na tíbia direita de 85 ratos machos da raça wistar com idade média de 12 semanas. A microtomografia computadorizada (µCT) e análise histológica foram realizadas para avaliar o reparo ósseo no defeito. As micrografias das superfícies obtidas mostraram mudanças no aspecto da superfície e composição química de acordo com o tratamento. O tratamento biomimético promoveu o crescimento da apatita sobre a superfície enquanto a imobilização com alendronato suprimiu sua formação. As imagens obtidas na microtomografia mostraram elevado valor de densidade óssea para o último grupo. No entanto, análises histológicas mostraram a formação de cápsula fibrosa em torno dos scaffolds a qual foi minimizada usando ultrassom pulsado de baixa intensidade. No entanto, mais estudos precisam ser realizados para avaliar a influência da geometria dos scaffolds na incorporação de medicamentos.
The objective of this in vivo study was to verify the bone response of coated Ti6Al4V porous scaffolds processed by Direct Metal Laser Sintering (DMLS) technique associated to low intensity pulsed ultrasound therapy. Scaffolds were processed by using Direct Metal Laser Sintering technique (DMLS) and heat treated at 1000 °C for 24 hours. Three types of surface treatments were evaluated: alkaline, biomimetic and sodium alendronate immobilization. For alkaline treatment, samples were immersed in a NaOH (5M) solution at 60ºC for 24 hours. Biomimetic treatment consisted in the immersion of the scaffolds into Simulated Body Fluid solution while for sodium alendronato immobilization the scaffolds were immersed in the solution formed by SBF plus drug during 5 days. The scaffolds surfaces were evaluated after each step employing SEM (Scanning Electron Microscopy)and X-rays diffraction analysis(XRD). Scaffolds were implanted into right tibia of 85 male Wistar rats with average age of 12 weeks. X-rays micro-computed tomography (µCT) and histological analysis were carried out to evaluate the bone repair on the defect. Micrographs analysis showed that the aspect of the surfaces and chemical composition changed according treatment. Biomimetic treatment promoted the growth of the apatite on the surface; in contrast the immobilization of alendronate suppressed apatite formation. Micro CT images showed higher value of bone density for the last group. However, histological analysis showed the formation of encapsulation fibrous around the scaffolds. This formation was minimized by using low intensity pulsed ultrasound technique, however, more studies can be carried out to evaluate the influence of scaffolds geometry in the drug incorporation.

Dupont, Préscillia. "Texturisation laser sélective des aciers électriques orientés et non orientés pour l'optimisation de leur perméabilité et des pertes dans les machines électriques tournantes". Electronic Thesis or Diss., Amiens, 2022. http://www.theses.fr/2022AMIE0065.

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Les matériaux ferromagnétiques doux, souvent employés sous la forme de tôles laminées fines, sont utilisés dans les stators et rotors des machines électriques tournantes. Le rendement de ces machines est réduit par des pertes dites "pertes fer", dues aux mécanismes d'aimantation et aux courants induits. La nature du matériau reflétée par sa structure magnétique couplée à la géométrie, à l'anisotropie et à la texture de la surface sont autant de facteurs qui influent sur les performances électromagnétiques finales. Ces travaux de thèse ont donc pour objectif de proposer des matériaux magnétiques sur mesure par texturisation laser sélective de surface pour des dispositifs électromagnétiques tels que les machines électriques tournantes. L'applicabilité d'un tel procédé au niveau industriel pour des matériaux à grains orientés ou à grains non orientés dans les machines électriques nécessite de contrôler davantage la technologie et les spécifications du procédé dans le but d'optimiser les propriétés électromagnétiques. En effet, l'impact déterministe de cette technique sur la structure magnétique d'un matériau et ses performances observables (perméabilité magnétique et pertes fer) reste incomplètement appréhendé, modélisé et connu. Les conditions d'industrialisation doivent être analysée et optimisée vis-à-vis des contraintes techniques et économiques. On cherche donc ici à étudier l'impact d'une texturisation de surface par laser pulsé sur la structure magnétique en surface et en volume d'un matériau pour pouvoir les contrôler. L'adaptation des procédés laser avec augmentation de la vitesse de traitement est étudiée théoriquement, puis engagée et vérifiée expérimentalement pour correspondre aux ambitions d'industrialisation. Ainsi, ce travail effectué en très grande proximité avec le projet européen H2020 ESSIAL permettra de proposer différents traitements de surface adaptés aux machines tournantes pour ajuster certaines propriétés magnétiques, de façon théorique et expérimentale
Soft ferromagnetic materials, which are often used in the form of laminated sheets, compose rotating electrical machines' stators and rotors. The efficiency of those machines is reduced by losses called "iron losses", induced by magnetization mechanisms and eddy currents. Those magnetization reversal mechanisms can only be explained with the magnetic structure coupled to the material geometry, anisotropy and surface texture, which are also deterministic factors for the final electromagnetic performances. Then, present work aims at proposing tailor-made soft ferromagnetic materials by means of selective laser texturizing for electromagnetic devices such as rotating electrical machines. To apply such a process at an industrial level for grain-oriented and non-grain-oriented materials in electrical machines, it is necessary to better control the associated technology and specify the process in order to optimize electromagnetic properties. Indeed, the deterministic impact of this technic on a material's magnetic structure and its performances (magnetic permeability and iron losses) remains partially modelled and understood. The integration of such solution at the industrial scale must be analyzed and optimized regarding technical and economical constraints. In this work, the study of the impact of laser surface texturizing on magnetic structure (regarding surface and volume) of a material with the aim to control it is performed. Future industrialization requires to adapt the pulsed laser processes at a higher speed which has been theoretically studied, initiated and experimentally verified. To finish, present work performed in parallel with the H2020 European project ESSIAL will allow to propose different surface treatments adapted to rotating machines to adjust some quantifiable electromagnetic properties with the help of both experimental and theoretical tools

Pacquentin, Wilfried. "Contribution à l'étude des propriétés physico-chimiques des surfaces modifiées par traitement laser : application à l'amélioration de la résistance à la corrosion localisée des aciers inoxydables". Phd thesis, Université de Bourgogne, 2011. http://tel.archives-ouvertes.fr/tel-00676332.

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Les matériaux métalliques sont utilisés dans des conditions de plus en plus sévères et doivent présenter une parfaite intégrité sur des périodes de plus en plus longues. L'objectif de ce travail de thèse est d'évaluer le potentiel d'un traitement de refusion laser pour améliorer la résistance à la corrosion d'un acier inoxydable de type 304L ; l'utilisation du laser dans le domaine des traitements de surface constituant un procédé en pleine évolution à cause des changements récents dans la technologie des lasers. Dans le cadre de ce travail, le choix du laser s'est porté sur un laser nano-impulsionnel à fibre dopée ytterbium dont les caractéristiques permettent la fusion quasi-instantanée sur quelques microns de la surface traitée, immédiatement suivie d'une solidification ultra-rapide avec des vitesses de refroidissement pouvant atteindre 1011 K/s. La combinaison de ces processus favorise l'élimination des défauts surfaciques, la formation de phases hors équilibre, la ségrégation d'éléments chimiques et la formation d'une nouvelle couche d'oxyde dont les propriétés sont gouvernées par les paramètres laser. Afin de les corréler avec la réactivité électrochimique de la surface, l'influence de deux paramètres laser sur les propriétés physico-chimiques de la surface a été étudiée : la puissance du laser et le taux de recouvrement des impacts laser. Pour clarifier ces relations, la résistance à la corrosion par piqûration des surfaces traitées a été déterminée par des tests électrochimiques. Pour des paramètres laser spécifiques, le potentiel de piqûration d'un acier inoxydable de type 304L augmente de plus de 500 mV traduisant ainsi une meilleure tenue à la corrosion localisée en milieu chloruré. L'interdépendance des différents phénomènes résultant du traitement laser a rendu complexe la hiérarchisation de leur effet sur la sensibilité de l'alliage testé. Cependant, il a été montré que la nature de l'oxyde thermique formé au cours de la refusion laser et ses défauts sont du premier ordre pour l'amorçage des piqûres.

NOGUEIRA, ALESSANDRO F. "Texturização em superfícies de titânio grau 2 irradiadas com laser de pulsos ultracurtos". reponame:Repositório Institucional do IPEN, 2015. http://repositorio.ipen.br:8080/xmlui/handle/123456789/23740.

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Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

SILVA, LUCIANA V. da. "Estudos dos mecanismos envolvidos em processos de endurecimento superficial a laser de ligas a base de aluminio". reponame:Repositório Institucional do IPEN, 2011. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9634.

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Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

Più fonti

Libri sul tema "Pulsed laser treatment":

Rhodes, Martha. 3,000 pulses later: A memoir of surviving depression without medication. West Redding, CT: Pushpin Press, 2013.

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Capitoli di libri sul tema "Pulsed laser treatment":

Waibel, Jill S. "Pulsed Dye Laser". In Laser Treatment of Vascular Lesions, 40–65. Basel: S. KARGER AG, 2014. http://dx.doi.org/10.1159/000355045.

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Chen, Andrea F., e Eduardo Weiss. "Intense Pulsed Light". In Laser Treatment of Vascular Lesions, 107–20. Basel: S. KARGER AG, 2014. http://dx.doi.org/10.1159/000355055.

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Jordan, R., D. Cole, J. G. Lunney, K. Mackay e D. Givord. "Pulsed Laser Ablation of Copper". In Laser Processing: Surface Treatment and Film Deposition, 823–29. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-0197-1_43.

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Nischwitz, Sebastian P., David B. Lumenta, Stephan Spendel e Lars-Peter Kamolz. "Minimally Invasive Technologies for Treatment of HTS and Keloids: Pulsed-Dye Laser". In Textbook on Scar Management, 263–69. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-44766-3_31.

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AbstractWe present another minimally invasive technology for the treatment of hypertrophic scars and keloids: the pulsed-dye laser. Being first introduced by two groups around Schaefer (Germany) and Sorokin & Lankard (USA) in 1966, the pulsed dye laser is a rather new technology. The first clinical use of pulsed-dye lasers was reported in 1983 for the treatment of naevus flammeus, and was the first laser used for the treatment of keloids in the mid-1990s.Its efficacy is based on the principle of selective photothermolysis, enabling a selective destruction of defined structures absorbing the respective wavelength used, as compared to other lasers working based on thermal coagulation or ablative tissue interaction. The preferred wavelengths being used are 585 or 595 nm, which makes small cutaneous vessels the main targets. Their destruction leads to a diminished blood supply of the irradiated area, thus reducing symptoms of hypertrophic scars like itching, vascularity, and redness, and secondary – probably by the induced hypoxemia – a reduction in scar height and pliability. This therapeutic approach also implies the use of pulsed-dye laser in the prevention of pathologic scars. While significant side effects are usually rare, slight signs of use like edema or scab formation can pertain for several days. Since the sensory impact of laser pulses are comparable to needle pricks, some form of analgesia during the application is highly recommended. The elusive data and still existing scarcity of high-quality studies on the use of pulsed-dye laser, however, make it hard to develop clear recommendations.

Fröhlingsdorf, J., e B. Stritzker. "Amorphous Gallium Produced by Pulsed Excimer Laser Irradiation". In Laser Surface Treatment of Metals, 133–40. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4468-8_14.

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dalle Rose, L. F. Dona. "Heat and Mass Transfer in Pulsed Laser Heating". In Laser Surface Treatment of Metals, 213–33. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4468-8_22.

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Brewin, Mark, e Kayvan Shokrollahi. "Pulsed Dye Laser Treatment for the Treatment of Hypertrophic Burns Scarring". In Laser Management of Scars, 43–46. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-52919-2_6.

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Peercy, P. S. "Measurement of Melt and Solidification Dynamics During Pulsed Laser Irradiation". In Laser Surface Treatment of Metals, 611–37. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4468-8_56.

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Peercy, P. S. "Solidification Dynamics and Microstructure of Metals in Pulsed Laser Irradiation". In Laser Surface Treatment of Metals, 57–78. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4468-8_9.

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Grangeon, F., H. Sassol, L. Lambert, Y. Mathey, M. Autric e W. Marine. "Pulsed Laser Deposition of Nb5Te4 Thin Films". In Laser Processing: Surface Treatment and Film Deposition, 727–37. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-0197-1_38.

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Atti di convegni sul tema "Pulsed laser treatment":

Dierickx, Christine C., e R. Rox Anderson. "Treatment of Vascular Lesions with a Long-Pulse Green Laser." In Lasers in Dermatology: Bio-Optics and Treatment of Human Skin. Washington, D.C.: Optica Publishing Group, 1997. http://dx.doi.org/10.1364/lid.1997.saa3.

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Following the theory of “selective photothermolysis” [1], pulsed lasers were specifically designed during the 1980’s for treatment of pediatric portwine stains (PWS) [2]. 585 nm (yellow) pulsed dye lasers, with a pulse duration of 0.45 msec, cause selective microvascular damage and are at present the standard for treatment of pediatric PWS [3-7]. However, pulsed dye laser treatment usually requires a series of treatments, and is often only partially effective. Gross purpura occurs after each treatment, posing a further cosmetic problem for patients. Adult PWS tend to respond less better presumably because of the change in vessel size and depth with aging.

Schavelzon, Diego, e Guillermo Blugerman. "Hair regrowth after treatment with pulsed light". In Laser Florence '99, a cura di Leonardo Longo, Alfons G. Hofstetter, Mihail-Lucian Pascu e Wilhelm R. Waidelich. SPIE, 2000. http://dx.doi.org/10.1117/12.389459.

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Kalmatskaya, Olesya А., Vladimir A. Karavaev, Lyudmila E. Gunar e Ekaterina I. Gunar. "Luminescent and physiological indices of bean plants under the treatment of seeds with epibrassinolide". In XV International Conference on Pulsed Lasers and Laser Applications, a cura di Victor F. Tarasenko, Anton V. Klimkin e Maxim V. Trigub. SPIE, 2021. http://dx.doi.org/10.1117/12.2614036.

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Balin, Victor N., Alexey S. Guk, Sergey P. Kropotov, Dimitry Y. Maday, Tatyana A. Kusovkova, Victor A. Serebryakov e Sergey V. Frolov. "Experimental caries treatment using the pulsed erbium laser". In Photonics West '96, a cura di Harvey A. Wigdor, John D. B. Featherstone, Joel M. White e Joseph Neev. SPIE, 1996. http://dx.doi.org/10.1117/12.238758.

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Schmauder, R., G. Dodel e G. Bilger. "Pulsed-laser deposition of boron nitride films on silicon". In Laser Methods of Surface Treatment and Modification: ALT '94 International Conference, a cura di Alexander M. Prokhorov e Vladimir I. Pustovoy. SPIE, 1995. http://dx.doi.org/10.1117/12.203637.

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Shulepov, Michail A., Elena N. Surnina, Anastasia A. Burenina e Evgeniy I. Lipatov. "Presowing treatment of wheat seeds with UV radiation of XeCl excilamps". In XIV International Conference on Pulsed Lasers and Laser Applications (AMPL-2019), a cura di Anton V. Klimkin, Victor F. Tarasenko e Maxim V. Trigub. SPIE, 2019. http://dx.doi.org/10.1117/12.2550967.

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Grupp, Michael. "Cleaning and surface treatment with pulsed high power fiber lasers". In 2014 International Conference Laser Optics. IEEE, 2014. http://dx.doi.org/10.1109/lo.2014.6886487.

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Zelickson, Brian D. "Laser Tattoo Removal". In Lasers in Dermatology: Bio-Optics and Treatment of Human Skin. Washington, D.C.: Optica Publishing Group, 1997. http://dx.doi.org/10.1364/lid.1997.saa5.

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Abstract (sommario):

Lasers have been employed in the removal of tattoos for the past three decades. During this time period, advances in the procedure allow ″lightening″ of tattoos with minimal risk of scarring. The most important development was the concept of selective phothermolysis. This concept lead investigators to examine the effects of employing very short pulsed or q-switched lasers with different wavelengths in treating small tattoo pigment particles.

Nyga, Sebastian, David Blass, Veronika Katzy, Thomas Westphalen, Bernd Jungbluth e Hans-Dieter Hoffmann. "Fiber-coupled three-micron pulsed laser source for CFRP laser treatment". In Solid State Lasers XXVII: Technology and Devices, a cura di W. Andrew Clarkson e Ramesh K. Shori. SPIE, 2018. http://dx.doi.org/10.1117/12.2288343.

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Lask, Gary, Patrick K. Lee, Manouchehr Seyfzadeh, J. Stuart Nelson, Thomas E. Milner, Bahman Anvari, Digant Dave et al. "Nonablative Laser Treatment of Facial Rhytides". In Lasers in Dermatology: Bio-Optics and Treatment of Human Skin. Washington, D.C.: Optica Publishing Group, 1997. http://dx.doi.org/10.1364/lid.1997.sab5.

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The purpose of this study is to evaluate the safety and effectiveness of nonablative laser treatment of facial rhytides (e.g., periorbital wrinkles) using the New Star Model 130 Nd:YAG laser system. Previous ablative laser skin resurfacing (LSR) using, for example, a pulsed or scanned CO2 laser has been accompanied by complications such as persistent erythema, dyspigmentation, scarring, and infection. A nonablative laser modality may be effective in reducing both the severity of wrinkles and the incidence of morbidity presently associated with LSR.