THE FINITE-ELEMENT METHOD FOR THE PROPAGATION OF LIGHT IN SCATTERING MEDIA - BOUNDARY AND SOURCE CONDITIONS
THE FINITE-ELEMENT METHOD FOR THE PROPAGATION OF LIGHT IN SCATTERING MEDIA - BOUNDARY AND SOURCE CONDITIONS
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DOI：
10.1118/1.597634
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发表时间：
1995-11-01
期刊：
影响因子：
3.8
通讯作者：
DELPY, DT
中科院分区：
文献类型：
--
作者：
SCHWEIGER, M;ARRIDGE, SR;DELPY, DT
本文扩展了我们将有限元方法（FEM）应用于组织中光传播的工作。我们在此处解决边界条件的主题和此方法的源规范。我们证明，在辐射传递方程上规定的各种边界条件可以在FEM方法中实现，以及通过Neumann条件而不是各向同性点源对光源的规范。我们比较了FEM下边界和源条件的多种不同组合以及蒙特卡洛模型中的相应情况的结果。
This paper extends our work on applying the Finite Element Method (FEM) to the propagation of light in tissue. We address herein the topics of boundary conditions and source specification for this method. We demonstrate that a variety of boundary conditions stipulated on the Radiative Transfer Equation can be implemented in a FEM approach, as well as the specification of a light source by a Neumann condition rather than an isotropic point source. We compare results for a number of different combinations of boundary and source conditions under FEM, as well as the corresponding cases in a Monte Carlo model.