In the 1950s, based on the theory of stimulating radiant energy published by Albert Einstein in 1916, the collaboration of physicists and electrical engineers, searching for monochromatic radiation to study the spectra of molecules, led to the invention of the first laser in 1960. Ophthalmologists and dermatologists were the first to study the biological effects […]
MODELLING AND MEASUREMENTS OF LASER-SKIN THERMAL INTERACTION
Thermal laser-skin interaction has principal role in laser dermatology, and it can be successfully modelled and measured. For modelling, the seminar covers all the steps involved, which range from determination of laser beam and skin optical properties, treatment of light propagation in the tissue, thermal diffusion of heat to thermal effects prediction. As a simple […]
LASER RADIATION PROPAGATION AND HEAT TRANSFER INTO CELLS AND TISSUES
In this paper we shall approach only the interaction of laser radiations with highly scattering and/or absorbing biological materials (i.e., opaque materials). The photon multiple scattering by cells and tissues is approached from the perspective of the general propagation theory (i.e., simple diffusion) of a particular physical magnitude, provoked by its conjugated gradient. In this […]
Results of fractional ablative facial skin resurfacing with the erbium:yttrium-aluminium-garnet laser 1 week and 2 months after one single treatment in 30 patients
The erbium:yttrium-aluminium-garnet (Er:YAG) laser has recently been used in the fractional resurfacing of photo-aged skin. Our study evaluated the results after one single session of fractional resurfacing with Er:YAG. Thirty women participated in the study, with an average age of 46 years, skin types from II to IV, and wrinkle grades I to III. The […]
One-Session Skin Resurfacing frazionale sicura ed efficace utilizzando un dispositivo laser ad anidride carbonica in Super-Pulse Mode: uno studio clinico e istologico
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 […]
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
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
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, […]