Monajjemi M.Alihosseini A.Kandemirli F.Mollaamin F.2023-04-112023-04-122023-04-112023-04-122022-10-15https://hdl.handle.net/20.500.12597/3769Some essential methods for overcoming the skin problem during laser therapy are Low-Level Laser Therapy and Cooling Laser Therapy in cooling the most superficial layers of the skin. Although melanin absorption will result in heat production during laser exposure, cooling the epidermis can prevent its temperature elevation from exceeding the threshold for thermal injury. L.D.C. is a technique for laser cooling of small particles. Low-Level Laser Therapy (LLLT), consisting of Low-intensity radiation in specific wavelengths, has been discussed to trigger cellular proliferation and differentiation through molecular mechanic mechanisms. This work studied the propagation of the laser beam into biological tissue such as the brain and skin by the Monte Carlo method. What is generally accepted is that the energy density required is very small, and the transmit power is less than 0.6 Watts.trueCooling Laser Therapy | Low-Level Laser Therapy | Medical engineering, photobiological & photochemicalArticle10.33263/BRIAC125.618461952-s2.0-85119347845