北京生物医学工程2013，Vol.32Issue(4)：342-346,5.DOI:10.3969/j.issn.1002-3208.2013.04.03.
用于经颅磁刺激铁芯线圈的仿真研究
Simulation research on iron-core coils for transcranial magnetic stimulation
摘要
Abstract
Objective To investigate a simulation method for induced electric field of iron-core coils and analyze the influence of iron core with different cross-section size on the coil performance.Methods Due to iron-core coils with complex structure and nonlinear material,transient magnetic field simulation of iron-core coils was conducted by the finite element software Ansoft.The induced current distributions of the coils with different core size were simulated and inductance value was conducted by using static simulation solution.Results The electric field distribution curves of coils in the depth of 5 mm along the coordinate axis were calculated,and the ratio of the second peak value and the maximum value in the curve was counted.As the cross-section of the iron core increased,both stimulus intensity and inductance of iron-core coils increased,focusing performance first increased and then decreased.Besides,the coils with iron core whose cross-section is about 1/16 of the hollow area had the best focusing performance.Conclusions This research provided a point of reference for the design of iron-corn coils for transcranial magnetic stimulation.关键词
经颅磁刺激/铁芯线圈/有限元分析/聚焦性/刺激强度Key words
transcranial magnetic stimulation/ iron-core coils/ finite element analysis/ focusing capability / stimulus intensity分类
医药卫生引用本文复制引用
孙有为,康宜华,孙燕华,朱沁..用于经颅磁刺激铁芯线圈的仿真研究[J].北京生物医学工程,2013,32(4):342-346,5.基金项目
国家自然科学基金(51105158)资助 （51105158）
