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A boundary element approach to relate surface fields with the specific absorption rate (SAR) induced in 3-D human phantoms

机译:一种将表面场与3-D人类幻影中诱导的比吸收率(SAR)相关的边界元方法

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摘要

This paper proposes a numerical technique, based on the boundary element method, for the reconstruction of the specific absorption rate in 3-D human phantoms. The method intends to relate electric and magnetic field measurements on the surfaces of a virtual box surrounding the considered phantom with the SAR values within the body. After a description of the adopted boundary element approach, an analysis of the influence on the SAR reconstruction accuracy of several parameters, such as size and shape of the virtual box, or position and number of the measurement points, is presented. The effect of the field source and supply frequency is also investigated. Finally, an extension of the approach to non-homogeneous phantoms is discussed.
机译:本文提出了一种基于边界元方法的数值技术,用于重构3-D人体模型的比吸收率。该方法旨在将围绕所考虑的体模的虚拟盒子表面上的电场和磁场测量与体内的SAR值相关联。在描述了采用的边界元方法之后,分析了几个参数对SAR重建精度的影响,例如虚拟盒子的大小和形状,或测量点的位置和数量。还研究了场源和供电频率的影响。最后,讨论了将方法扩展到非均质体模的问题。

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