多信道经颅磁刺激线圈阵列设计及场强分布计算

摘要

Objective: Distribution of magnetic and electric fields induced inside a spherical volume conductor by coil array of transcranial brain multichannel magnetic stimulation are shown. Methods: The coil array of transcranial brain multichannel magnetic stimulation is designed and the theoretical field model is built in this paper. Results: All kinds of distribution of magnetic and electric fields induced inside a spherical volume conductor by different driving current are calculated. Three kinds of field distribution are shown as contour lines and 3-Dmesh charts of the magnitude of B and E. Conclusion: The magnetic and electric fields produced by transcranial brain multichannel magnetic stimulation are easy to focus and control,and they can focus on two or more targets simultaneously.%目的：显示多元线圈阵列在球形头模中产生的电磁场分布。方法：设计了一种新型经颅磁刺激仪的线圈阵列，建立在人体头部产生的电磁场模型。结果：计算出不同线圈电流组态下，合成刺激磁场及感应电场在人体头部的分布，并作图显示几种电流组态下，三维图形和二维等高线图。结论：多信道经颅磁刺激线圈阵列在人体头部产生的电磁场可控性强，聚焦性能强，而且可同时刺激不同的靶目标。