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    首頁> 外文期刊>IEEE Transactions on Magnetics >Improvement in Efficiency of Transcranial Magnetic Stimulator Coil by Combination of Iron Core Plates Laminated in Different Directions
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    Improvement in Efficiency of Transcranial Magnetic Stimulator Coil by Combination of Iron Core Plates Laminated in Different Directions

    機譯：通過組合不同方向的鐵芯板來提高經顱磁刺激線圈的效率

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    Recent studies have revealed that transcranial magnetic stimulation (TMS) has therapeutic effects for various neurological and psychiatric diseases, such as neuropathic pain and depression. However, since TMS requires a high voltage and a large current, the TMS coil heats quickly, and this prevents doctors from treating patients for prolonged periods with high-frequency stimulation. We have previously proposed a centered-eccentric figure-8 coil that could stimulate the motor cortex with lower current compared with conventional figure-8 coils. However, the enhancement in the efficiency of this coil was not sufficient. In this paper, to enhance the efficiency of the centered-eccentric figure-8 coil, we propose a new coil with a laminated iron core plate, and evaluate its effect on stimulation intensity based on finite-element method simulations. We performed the simulations for the following scenarios: 1) no iron core plate; 2) a non-laminated iron core plate; 3) a vertically laminated iron core plate; 4) a horizontally laminated iron core plate; and 5) a combination of vertically and horizontally laminated iron core plates. The results show that the combination of the iron core plates laminated in different directions yielded the best improvement in stimulation intensity, and the power of such a coil would be 2.8 times that of the coil with no plate. Thus, the current applied to the coil can be considerably reduced by using a combination of laminated iron core plate.
    機譯：最近的研究表明，經顱磁刺激（TMS）對各種神經和精神疾?。ɡ缟窠浶蕴弁春鸵钟舭Y）具有治療作用。但是，由于TMS需要高壓和大電流，因此TMS線圈會很快加熱，這使醫生無法通過高頻刺激長時間治療患者。以前我們已經提出了一個偏心的8字形中心線圈，與傳統的8字形線圈相比，它可以用更低的電流刺激運動皮層。但是，該線圈的效率提高還不夠。在本文中，為了提高中心偏心八字形線圈的效率，我們提出了一種新的帶有疊片鐵芯板的線圈，并基于有限元方法模擬評估了其對激勵強度的影響。我們針對以下情況進行了仿真：1）沒有鐵芯板； 2）非層壓鐵芯板； 3）垂直層壓的鐵芯板； 4）水平層壓的鐵芯板； 5）垂直和水平層壓的鐵芯板的組合。結果表明，沿不同方向層壓的鐵芯板的組合產生了最佳的刺激強度改善，并且這種線圈的功率將是沒有板的線圈的功率的2.8倍。因此，通過使用疊層鐵芯板的組合，可以顯著減小施加到線圈的電流。

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