【摘要】 本文利用基于脉冲响应函数的 Monte Carlo方法 ,模拟了不同分布的面光源照射条件下 ,生物组织中不同层面上的二维光场分布 ,分析了透射深度与入射光源分布对组织中光分布特点的影响 ,说明该模拟方法计算效率高且统计稳定性好 ,同时讨论了不同情况下 ,脉冲响应函数模拟量与光源离散量的选取原则更多还原

【Abstract】 In this paper,impulse response function based Monte Carlo method is used to simulate light distributions in different layers of biological tissues that is irradiated by various incident surface sources.The characteristics of light distribution in different transmitting depth and under different incident surface sources are analyzed comprehensively.The simulation results show that the impulse response function based Monte Carlo method has the potential of high computational efficiency and statistics stability.The dispersion of incident surface sources and the quantity of simulating photons in calculating impulse response functions are also discussed under different conditions.更多还原