Local grid refinement for low-frequency current computations in 3-D human anatomy models
Local grid refinement for low-frequency current computations in 3-D human anatomy models
复制标题
用于 3D 人体解剖模型中低频电流计算的局部网格细化
DOI：
10.1109/tmag.2006.871449
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发表时间：
2006
影响因子：
2.1
通讯作者：
T. Weiland
中科院分区：
文献类型：
--
作者：
A. Barchanski;T. Steiner;H. de Gersem;M. Clemens;T. Weiland
在基于体素的高分辨率解剖模型中计算电流密度，可以深入了解人体内的电流分布。人体的几何复杂性需要非常高的分辨率才能正确解析微小的器官。我们提出了一种用于低频电流计算的局部网格加密方案，允许精细地解决特别感兴趣的区域。采用拉格朗日乘子法，整个模型包括细网格和粗网格区域，只需一个代数方程组的解即可计算。通过数值算例验证了所提方法的有效性
The calculation of current densities in voxel-based high-resolution anatomy models allows insight in the current distribution inside the human body. The geometric complexity of the human body requires a very high resolution in order to properly resolve small organs. We present a local grid refinement scheme for low-frequency current calculations, allowing to finely resolve areas of particular interest. Using a Lagrange-multiplier approach, the whole model including the fine and coarse grid domains can be computed with only one solution of an algebraic system of equations. The presented approach is validated and tested on numerical examples
影响因子：
3.5
作者：
Gabriel, S;Lau, RW;Gabriel, C
通讯作者：
Gabriel, C