经颅磁刺激电磁场分析系统设计  

System Design for Analyzing Magnetic Field of Transcranial Magnetic Stimulation

作　　者：周鹏[1] 贺威忠[1] 林冬冬[1] 葛家怡[1] 王明时[1] 

机构地区：[1]天津大学精密仪器与光电子工程学院,天津300072

出　　处：《天津大学学报》2010年第3期249-254,共6页Journal of Tianjin University(Science and Technology)

基　　金：教育部博士点科研基金资助项目(200800561089)

摘　　要：为了对经颅磁刺激下大脑内部磁场分布和变化规律进行准确分析,并对刺激线圈进行个性化设计,设计了经颅磁刺激电磁场分析系统.利用有限元方法,建立真实头模型,对线圈产生的脉冲磁场整个过程做全面的电路磁场混合分析,仿真不同线圈参数在脑内产生的效果.同时,根据临床磁刺激需要,结合数据库技术对磁刺激线圈参数进行自动优化选择.实验表明,该系统分析准确,为实际刺激线圈的制作和临床刺激强度的选择提供了依据.To correctly analyze distribution and changing rules of magnetic field in the brain under transcranial mag- netic stimulation, and to obtain individualized design of the coil, magnetic field analyzing system of transcranial magnetic stimulation was designed. A circuit-magnetic field coupling analysis was made to analyze the whole pulse mag- netic field progress through using finite element method and establishing a real head model, and the effect in the brain with different coil parameters was simulated. Then database technology was applied to realize automatic optimization of the coil parameters according to requirements of the clinic stimulation. This analysis is proved to be reliable and can provide foundation for making the coil stimulation and choosing the magnetic field of clinic stimulation.

关 键 词：经颅磁刺激 真实头模型 有限元分析 

分 类 号：R318[医药卫生—生物医学工程]