Enhancement of Penetration Depth and Focality in Transcranial Magnetic Stimulation Using Combined X-halo and Annulus Sector Coils

IF 3.4 3区计算机科学 Q2 COMPUTER SCIENCE, INFORMATION SYSTEMS

IEEE Access Pub Date : 2024-10-04 DOI:10.1109/ACCESS.2024.3473994

Hongjoon Cho;Changil Choi;Jinho Jeong

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Abstract

Transcranial magnetic stimulation (TMS), a non-invasive therapeutic method, has attracted considerable interest for its potential in addressing diverse neurological disorders. Several types of TMS coils have been proposed to enhance the stimulating characteristics such as penetration depth and focality of the induced electric field. In this study, the X-halo and annulus sector coils are proposed to address the trade-off between penetration depth and focality of electric field. The stimulating characteristics of the proposed coils are simulated using a finite element method for the conductive head model. It is demonstrated that penetration depth and focality can be controlled by the relative position of the annulus sector coils and adjusting the current ratio between the two coils. A comparison with previously reported coils indicates that the proposed coils can achieve deeper penetration depth for the same stimulating area, suggesting an improvement in the trade-off between penetration depth and focality. The simulation results were validated by the measurement of the magnetic and electric field distribution in air generated by the fabricated coils.

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使用 X 光环和环形扇形线圈增强经颅磁刺激的穿透深度和聚焦效果

经颅磁刺激（TMS）是一种非侵入性治疗方法，因其在治疗各种神经系统疾病方面的潜力而备受关注。目前已提出了多种类型的 TMS 线圈，以增强刺激特性，如感应电场的穿透深度和聚焦性。本研究提出了 X 光环和环形扇形线圈，以解决穿透深度和电场聚焦之间的权衡问题。使用有限元法对导电头部模型模拟了拟议线圈的刺激特性。结果表明，穿透深度和聚焦度可通过环形扇形线圈的相对位置和调整两个线圈之间的电流比来控制。与之前报道的线圈进行比较后发现，在相同的刺激面积下，所提出的线圈能达到更深的穿透深度，这表明在穿透深度和聚焦度之间的权衡有所改进。通过测量制造的线圈在空气中产生的磁场和电场分布，对模拟结果进行了验证。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Access COMPUTER SCIENCE, INFORMATION SYSTEMSENGIN-ENGINEERING, ELECTRICAL & ELECTRONIC

CiteScore

9.80

自引率

7.70%

发文量

6673

审稿时长

6 weeks

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