基于三维有限元软件的经颅磁刺激仿真研究  

Simulation and Research in Transcranial Magnetic Stimulation Based on Three Dimensional Finite Element

作　　者：聂文亮[1] 刘冀成[1] 谭伟强[1] 

机构地区：[1]成都信息工程学院电子工程学院,四川成都610225

出　　处：《成都信息工程学院学报》2012年第4期349-353,共5页Journal of Chengdu University of Information Technology

基　　金：国家自然科学基金资助项目(60971043);四川省科技厅科技支撑计划资助项目(2012SZ0069)

摘　　要：为了寻求一种能够真实有效的反应经颅磁刺激下头部组织磁场分布的方法,根据经颅磁刺激的产生原理,设计了激励源仿真电路,然后利用三维有限元软件Ansoft建立了4层球头模型,仿真出此模型在单线圈和"8"字形线圈刺激下头组织内部磁场的分布,并对比分析了两种线圈下磁场的聚焦性能,头部各组织磁场随时间的变化以及刺激深度。仿真结果表明:Ansoft软件在经颅磁刺激研究工作中具有可行性,从而提出一种准确有效的经颅磁刺激研究新方法。In order to find a real and effective method to response the magnetic field distribution of the head organiza- tion under transcranial magnetic stimulation, according to the principles of transcranial magnetic stimulation, the excitation circuit was simulated. A four-layer ball head model was set up using the three-dimensional finite element soft- ware Ansoft, ;its internal magnetic field distribution was stimulated under the single coil and ＂8＂ shaped coils. The focused magnetic field, the magnetic field of the head organizations changes with time and field attenuation in depth of the two coil arrays are compared. The simulation results show that： a study of transcranial magnetic stimulation based on the Ansoft software is feasible, and an accurate and effective method of studying transcranial magnetic stim- ulation is proposed.

关 键 词：生物医学工程 经颅磁刺激Ansoft激励源电路 聚焦性 刺激深度 

分 类 号：TP18[自动化与计算机技术—控制理论与控制工程]