Thermal Relaxation Time Of Healthy and Cancerous Tissue In Pulsed Laser Using Monte Carlo Simulation

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Khaze, Mehran | 2017

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 49504 (04)
University: Sharif University of Technology
Department: Physics
Advisor(s): Amjadi, Ahmad
Abstract:
Thermal relaxation time is the time when maximum temperature of a particle get to 1/e of it’s initial value. The destruction of a tissue depends to this important parameter. This parameter has studied by Monte Carlo simulation of pulsed laser in to environment as healthy and cancerous tissue. The main goal of this method is providing proper temperature in a special area so that minimize thermal destruction around that area. In this thesis, temperature distribution of tissue that is caused by pulsed laser, has solved by new method;in this new method the pulse duration uses for Monte Carlo simulation. Also using the solution of radiation transfer equation by Discretes Ordinate Method, new relation has been proved for absorbed intensity and pulse duration
Keywords:
Monte Carlo Method ; Thermal Distribution ; Thermal Effect ; Laser Therapy ; Laser Thermal Effect ; Laser-Tissue Interaction ; Thermal Relaxation Time (TRT) ; Discretes Ordinate Method (DOM)