Finite element method modeling to confirm the results of comprehensive optimization of the tripolar concentric ring electrode based on its finite dimensions model
Finite element method modeling to confirm the results of comprehensive optimization of the tripolar concentric ring electrode based on its finite dimensions model
复制标题
有限元法建模验证基于有限尺寸模型的三极同心环电极综合优化结果
DOI：
10.1109/embc46164.2021.9629784
复制
发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Garcia-Casado, Javier
中科院分区：
文献类型：
--
作者：
Makeyev, Oleksandr;Ye-Lin, Yiyao;Prats-Boluda, Gema;Garcia-Casado, Javier
同心环形电极是用于电生理测量的非侵入性和可穿戴传感器，能够估计每个电极处的表面拉普拉斯（表面电位的二阶空间导数）。环间距离（电极记录表面之间的距离）的优化取得了重大进展，最大限度地提高了基于电极可忽略尺寸模型的表面拉普拉斯估计的准确性。然而，新的有限尺寸模型提供了全面的优化，包括所有的电极参数，同时包括中心盘的半径和同心环的宽度到模型中。最近，这样的综合优化问题已经解决了分析的三极电极配置。本研究首次引入了基于有限维模型的有限元模型（而不是过去使用的基于可忽略维模型的模型）来证实分析结果。具体地说，有限元方法建模结果证实，与相同尺寸的最佳三极同心环电极配置直接比较时，先前提出的三极同心环电极的线性增加环间距离和恒定环间距离配置对应于拉普拉斯估计的相对和归一化最大误差的几乎两倍和三倍以上的增加。本研究评估并确认了可最大限度地提高通过同心环电极记录的估计拉普拉斯算子准确性的电极配置。因此，它是潜在的有用的设计未来的同心环电极的诊断目的，如癫痫灶的定位。
Concentric ring electrodes are noninvasive and wearable sensors for electrophysiological measurement capable of estimating the surface Laplacian (second spatial derivative of surface potential) at each electrode. Significant progress has been made toward optimization of inter-ring distances (distances between the recording surfaces of the electrode), maximizing the accuracy of the surface Laplacian estimate based on the negligible dimensions model of the electrode. However, novel finite dimensions model offers comprehensive optimization including all of the electrode parameters simultaneously by including the radius of the central disc and the widths of the concentric rings into the model. Recently, such comprehensive optimization problem has been solved analytically for the tripolar electrode configuration. This study, for the first time, introduces a finite dimensions model based finite element method model (as opposed to the negligible dimensions model based one used in the past) to confirm the analytic results. Specifically, finite element method modeling results confirmed that previously proposed linearly increasing inter-ring distances and constant inter-ring distances configurations of tripolar concentric ring electrodes correspond to an almost two-fold and more than three-fold increases in relative and normalized maximum errors of Laplacian estimation when directly compared to the optimal tripolar concentric ring electrode configuration of the same size.Clinical Relevance— This study assesses and confirms the electrode configuration that maximizes the accuracy of the estimated Laplacian recorded via concentric ring electrodes. Therefore, it is potentially useful for designing future concentric ring electrodes for diagnostic purposes such as localization of epileptic foci.
登录
查看更多内容
影响因子：
2.6
作者：
Toole, Christopher;Martinez-Juarez, Iris E.;Besio, Walter G.
通讯作者：
Besio, Walter G.
影响因子：
10
作者：
Wang, Kaiping;Parekh, Udit;Ng, Tse Nga
通讯作者：
Ng, Tse Nga
量化生物电源的深度以实现非侵入式 3D 成像
DOI：
--
发表时间：
2005
期刊：
影响因子：
--
作者：
W. Besio;M. Fasiuddin
通讯作者：
M. Fasiuddin
基于电极有限维模型的三极同心环电极拉普拉斯估计精度综合优化
DOI：
10.3390/ecsa-7-08167
发表时间：
2020
期刊：
Proceedings of 7th International Electronic Conference on Sensors and Applications
影响因子：
--
作者：
O. Makeyev
通讯作者：
O. Makeyev
影响因子：
3.8
作者：
Garcia-Casado, J.;Zena-Gimenez, V.;Ye-Lin, Y.
通讯作者：
Ye-Lin, Y.