摘要
经颅电刺激(TES)的头部3维有限元模型对于理解脑区的电势、电流分布及TES作用机制具有重要意义。为了给TES仿真提供更精确和真实的头部3维实体有限元模型,利用真实成人头部CT影像数据,通过3维图像重建、逆向工程计算及有限元网格划分,对包括头皮、颅骨、脑脊液和脑组织的4层人体头部组织进行有限元实体模型构建。结果表明:该建模方法构建的头部实体模型既保证了真实性,又具有较高的精确度,可以为TES脑区电势及电流分布、电极定位等分析计算提供理想的有限元模型。
The voltage potential and current distributions in the brain are related to the transcranial electric stimulation (TES) mechanism. A more accurate, realistic 3-D finite element head model is developed for TES analyses using reverse engineering to mesh a realistic adult head from CT image data. The 3-D finite element model includes the scalp, skull, cerebrospinal fluid (CSF), and brain. The head model is more realistic and accurate than previous models. The finite element model can then be used to predict potential and current distributions in the brain to identify electrode locations for TES.
出处
《清华大学学报(自然科学版)》
EI
CAS
CSCD
北大核心
2014年第9期1220-1224,共5页
Journal of Tsinghua University(Science and Technology)
基金
国家自然科学基金项目(81372412)
北京市科委资助项目(Z131100004013002)
关键词
经颅电刺激
CT数据
3维重建
有限元模型
transcranial electrical stimulation
CT data
3-D reconstruction
finite element model