用于深度经颅磁刺激的线圈阵列电场仿真研究

摘要

近年来,多通道经颅磁刺激线圈阵列以其独特的优势成为了一个研究热点.以方形线圈、长直导线为基础,设计多通道线圈阵列布置方式,利用三维电磁场仿真软件建立线圈模型,研究多通道线圈不同工作模式下线圈性能参数的变化规律,探究辅助线圈对原有线圈阵列的影响,得到辅助线圈电流、相对位置与线圈性能的关系.结果表明,线圈聚焦度和刺激强度随着刺激深度的增加而降低,适当引入辅助线圈可以显著提高线圈阵列的聚焦度.%In recent years,multi-channel transcranial magnetic stimulation coil array has become a hot research topic.Based on square coil and long straight wire,design of multi-channel coil array arrangement.Using three dimensional electromagnetic field simulation software to build the coil model,study on the variation of the performance parameters of the coil under different operating modes of multi-channel coils,the relationship between the current and the relative position of the auxiliary coil and the performance of the coil is obtained.Results show that the focality and intensity of coil decreased with the increase of depth,the proper introduction of auxiliary coil can significantly improve the focality of coil array.