方法：利用曲线拟合方法模拟大脑外形曲线，借助有限元方法和等位线反投影算法完成脑eit仿真成像。
A curve of a real brain shape is simulated with the curve-fitting methods and EIT in the brain is finished with finite-element methods and Equipotential Lines Back-Projection algorithm.
研究表明：改进的等位线反投影算法不但可以较准确地对场域内目标进行定位，而且具有一定的分辨率；
The research results show that back projection algorithm can not only accurately determine the location of target, but also have good resolution.
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