Carbon dioxide (CO2) laser ablative fractional resurfacing produces skin damage, with removal of the epidermis and variable portions of the dermis as well as associated residual heating, resulting in new collagen formation and skin tightening. The nonresurfaced epidermis helps tissue to heal rapidly, with short-term postoperative erythema. The results for 40 patients (8 men and […]
Neodymium concentration dependence of 0.94-, 1.06- and 1.34-μm laser emission and of heating effects under 809- and 885-nm diode laser pumping of Nd:YAG
Laser emission in the 0.94-, 1.06- and 1.34-micron ranges in diluted and concentrated Nd:YAG crystals longitudinally pumped by a 885-nm diode laser on the 4I9/2 → 4F3/2 transition is investigated. Continuous-wave operation at watt level in all these wavelength ranges is demonstrated with a 1.0-at.% Nd:YAG crystal; however, the laser performance is impeded by the […]
Propagazione della luce
Vogliamo analizzare che cosa succede quando un fronte d’onda incontra sul suo cammino una superficie estesa. Dobbiamo distinguere i caso in cui la superficie sia una superficie dielettrica o conduttrice. Analizziamo innanzitutto il caso in cui la superficie separa il mezzi dielettrico in cui l’onda si propaga, da un secondo mezzo, ancora dielettrico, omogeneo e […]
Novel Use of Erbium:YAG (2,940-nm) Laser for Fractional Ablative Photothermolysis in the Treatment of Photodamaged Facial Skin: A Pilot Study
Fractional photothermolysis is a new technique for the treatment of skin lesions in which an array of microscopic thermal wounds (microscopic treatment zones) is induced into the skin to stimulate a therapeutic response deep in the dermis. articolo completo Autori Moshe Lapidoth Marina Emiko Yagima Lilian Mayumi
Un nuovo uso del laser Erbio: YAG (2940 nm), per la fototermolisi frazionale ablativa nel trattamento della pelle del volto fotodanneggiata: uno studio pilota
La fototermolisi frazionale è una nuova tecnica per il trattamento di lesioni della pelle in cui è indotta una serie di microscopiche ferite termiche (zone trattamento microscopici) per stimolare una risposta terapeutica in profondità nel derma. articolo completo Autori Moshe Lapidoth Marina Emiko Yagima Lilian Mayumi
Manipolo Pixel CO2 Omnifit per Resurfacing frazionale ablativo microspopico della pelle – studio in vivo
I tradizionali dispositivi laser CO2, sono altamente efficaci nello skin resurfacing, ma sono associati con tempi di recupero prolungati e rilevanti effetti negativi. La modalità non ablativa offre tempi di inattività ridotti e minori effetti collaterali, ma l’efficienza è limitata. Il nuovo manipolo laser CO2 frazionato produce una matrice di ferite microtermiche a profondità personalizzabile […]
Fractional 1320 nm Nd : YAG laser in the treatment of acne vulgaris: a pilot study
Acne vulgaris is a common skin condition, affecting over 85% of people. Because of its effect on quality of life, acne vulgaris is more than a merely physiological or cosmetic entity. Acne is caused by changes in the pilosebaceous units. Patients have excess sebum production and non-inflammatory follicular papules. Proliferation of Propionibacterium acnes may lead […]
Mapping pigmentation in human skin from multi-channel visible spectrum image by inverse optical scattering technique
Mapping pigmentation in human skin is expected to give useful information in reproducing skin color and enhancing the ability to diagnose various skin disease. In this research, maps of melanin, oxyhemoglobin and deoxy-hemoglobin in skin are estimated from multichannel visible spectrum image by using an inverse optical scattering technique. In the inverse optical scattering technique, […]
Ablation and Thermal Depths in VSP Er:YAG Laser Skin Resurfacing
The list of indications for which Variable Square Pulse (VSP) Er:YAG laser systems can be used is continuously expanding. For example, ablative fractional resurfacing treatments performed with the VSP Er:YAG laser have good clinical outcomes and significantly shorter recovery times and adverse effects compared with traditional ablative laser skin resurfacing. Recently, an Er:YAG laser operating […]
Epidermal Thickness at Different Body Sites: Relationship to Age, Gender, Pigmentation, Blood Content, Skin Type and Smoking Habits
Epidermal thickness and its relationship to age, gender, skin type, pigmentation, blood content, smoking habits and body site is important in dermatologic research and was investigated in this study. Biopsies from three different body sites of 71 human volunteers were obtained, and thickness of the stratum corneum and cellular epidermis was measured microscopically using a […]