Caorsi S, Massa A
Interuniversity Center for the Interaction Between Electromagnetic Fields and Biosystems at DIBE, Genoa, Italy.
Bioelectromagnetics. 2000 Sep;21(6):422-31.
This paper presents an inverse scattering procedure based on a statistical cooling algorithm to predict the electromagnetic field inside a biological body. By knowing only the scattered electric field distribution in a set of observation points external to the biological model, this method seems to be able to predict the electromagnetic field distributions in the investigation domain, minimizing a suitable cost function. To this end, a numerical statistical procedure is used, which allows to treat functions with a large number of unknowns in an efficient manner and to exploit the so called a priori knowledge in the reconstruction process. Some preliminary results are reported, concerning simplified biological geometries, which clearly show the capabilities and effectiveness, and also the current limitations of the proposed approach. Finally, further advances for the proposed imaging technique are indicated and discussed.
本文提出了一种基于统计冷却算法的逆散射程序,用于预测生物体内的电磁场。仅通过了解生物模型外部一组观测点处的散射电场分布,该方法似乎就能预测研究区域内的电磁场分布,同时使一个合适的代价函数最小化。为此,使用了一种数值统计程序,该程序能够有效地处理具有大量未知数的函数,并在重建过程中利用所谓的先验知识。报告了一些关于简化生物几何形状的初步结果,这些结果清楚地展示了所提方法的能力和有效性,以及当前的局限性。最后,指出并讨论了所提成像技术的进一步进展。