Wang Y, Wu D, He B
Department of Electrical Engineering and Computer Science, University of Illinois at Chicago 60607, USA.
IEEE Trans Biomed Eng. 1998 Jan;45(1):131-3. doi: 10.1109/10.650368.
In this short communication, a corrected version of algorithm for calculating the body surface Laplacian (BSL) in an inhomogeneous volume conductor of arbitrary shape is described. The present computer simulation results show that the corrected algorithm can give an accurate numerical solution. This algorithm was then applied to examine the effect of the lung inhomogeneity on the BSL's in a realistically shaped torso model. The simulation results show that the low-conductivity lungs have little effect on both topology and magnitudes of body surface Laplacian maps (BSLM's) for a single dipole source.
在这篇简短的通讯中，描述了一种用于在任意形状的非均匀体积导体中计算体表拉普拉斯算子（BSL）的算法的修正版本。目前的计算机模拟结果表明，修正后的算法能够给出精确的数值解。然后将该算法应用于在逼真形状的躯干模型中研究肺部不均匀性对体表拉普拉斯算子的影响。模拟结果表明，对于单个偶极子源，低电导率的肺部对体表拉普拉斯算子图（BSLM）的拓扑结构和幅值影响很小。
