Local grid refinement for low-frequency current computations in 3-D human anatomy models

被引：16

作者：

Barchanski, A ^{[1
]}

Steiner, T

De Gersem, H

Clemens, M

Weiland, T

机构：

[1] Tech Univ Darmstadt, Fachbereich Elektrotech & Informationstech 18, Inst Theorie Elektromagnet Felder, D-64289 Darmstadt, Germany

[2] Univ Bundeswehr Hamburg, Helmut Schmidt Univ, D-22008 Hamburg, Germany

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2006年 / 42卷 / 04期

关键词：

biological effects of electromagnetic radiation; electrodynamics; finite integration technique; iterative methods;

D O I：

10.1109/TMAG.2006.871449

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

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.

引用

页码：1371 / 1374

页数：4

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