用于神经元磁场刺激的圆柱形组织模型：线圈几何形状的影响。

Cylindrical tissue model for magnetic field stimulation of neurons: effects of coil geometry.

作者信息

Esselle K P, Stuchly M A

机构信息

Department of Electronics, School of Mathematics, Physics, Computing and Electronics, Macquarie University, Sydney, NSW, Australia.

出版信息

IEEE Trans Biomed Eng. 1995 Sep;42(9):934-41. doi: 10.1109/10.412660.

DOI:10.1109/10.412660

PMID:7558068

Abstract

An analytical solution for the electric field induced in a homogeneous cylindrical conductor under quasi-static conditions from current in a coil is used to model peripheral nerve stimulation with magnetic fields. A variety of coil geometries is analyzed in terms of the spatial derivative of the induced electric field along a long straight nerve, parallel to the axis, in a human-arm model. The results of these computations are found to be in general agreement with conclusions regarding the optimization of stimulating coils derived from analyses of the semi-infinite tissue model. The differences and their physical basis are pointed out.

摘要

利用准静态条件下线圈电流在均匀圆柱形导体中感应出的电场的解析解，对磁场引起的周围神经刺激进行建模。在人体手臂模型中，根据沿与轴平行的长直神经的感应电场的空间导数，分析了各种线圈几何形状。发现这些计算结果与从半无限组织模型分析得出的关于刺激线圈优化的结论总体一致。指出了差异及其物理基础。