基于Matlab的四层椭圆头模型EIT正向计算研究  

Study of the forward problem of the four-layer ellipse brain model based on Matlab

作　　者：李英一[1] 刘文礼[1] 陶佰睿[1] 郭福三[1] 

机构地区：[1]齐齐哈尔大学通信与电子工程学院,黑龙江齐齐哈尔161006

出　　处：《齐齐哈尔大学学报（自然科学版）》2015年第6期9-11,共3页Journal of Qiqihar University(Natural Science Edition)

基　　金：黑龙江省自然科学基金(F201332);黑龙江省教育科学"十二五"规划课题(GBC1214089)

摘　　要：目的:探寻一种可用于头部EIT(电阻抗成像技术)正问题相对精确并且实现简单的求解方法,使得逆问题的结果能够更加接近人体头部的真实阻抗分布。方法:利用Matlab构建一种比传统圆形或同心圆更加符合人脑形状的二维四层椭圆头模型结构,并对其进行剖分和正向仿真计算。结果:实现了模型的建立、剖分、偏微分方程的求解以及解的可视化。结论:与使用其它编程语言实现正向计算相比,这一方法更加直观,程序调试以及修改都更加容易;构建的模型更加接近人头部的真实结构,为逆问题的精确求解奠定了基础。Object to find a more exact and easy method used for solving the forward problem of the EIT, and to make the impedance of the brain solved in the inverse problem more accurate. Method To design a 2D four-layer ellipse brain model using the software of matlab,and to give the mesh and solution to this model. Compared with the circle model or the concentric circles model, this structure approaches the actual shape of the human brain much more. Results The four-layer ellipse brain model is established, and the function of mesh, the solution and the visualization are also implemented.Conclusion It＇s proved that this is an easy method, and the program has the advantage of convenience to debug and modify. It is a solid foundation to solve the inverse problem accurately.

关 键 词：四层椭圆头模型 电阻抗成像技术 正问题 仿真计算 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]