Designing transcranial magnetic stimulation systems
Designing transcranial magnetic stimulation systems
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DOI：
10.1109/tmag.2004.843326
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发表时间：
2005-03-01
影响因子：
2.1
通讯作者：
Riehl, M
中科院分区：
文献类型：
--
作者：
Davey, K;Riehl, M
我们解释了优化的经颅磁刺激系统的设计过程，并概述了一种方法，用于确定最佳的系统参数，如匝数，电容器的大小，工作电压，和刺激线圈的大小。该方法结合了场分析、线性和非线性电路分析以及神经强度-持续时间响应参数。该方法使用边界元分析来预测作为深度、频率、电流和励磁线圈尺寸的函数的电场。然后，它使用的字段分析，以确定电感作为一个功能的大小，并在一般情况下，电流时，使用饱和的核心。电路分析允许这些电场计算针对系统参数进行索引，并针对总系统能量和刺激线圈尺寸进行优化。系统优化取决于期望的刺激深度。该方法的一个显着特点是，它固有地对待激励频率作为一个未知的优化确定。
We explain the process of designing optimized transcranial magnetic stimulation systems and outline a method for identifying optimal system parameters such as the number of turns, the capacitor size, the working voltage, and the, size of the stimulation coil. The method combines field analysis, linear and nonlinear circuit analysis, and neural strength-duration response parameters. The method uses boundary-element analysis to predict the electric field as a function of depth, frequency, current, and excitation coil size. It then uses the field analysis to determine the inductance as a function of size and, in general, current when a saturable-core is used. Circuit analysis allows these electric field computations to be indexed against system parameters, and optimized for total system energy and stimulation coil size. System optimizations depend on desired stimulation depth. A distinguishing feature of the method is that it inherently treats excitation frequency as an unknown to be determined from optimization.