Title :
On the algorithm for computing body surface Laplacians in an inhomogeneous volume conductor of arbitrary shape
Author :
Wang, Yunhua ; Wu, Dongsheng ; He, Bin
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Illinois Univ., Chicago, IL, USA
Abstract :
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 BSLs 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 (BSLMs) for a single dipole source.
Keywords :
Laplace transforms; digital simulation; electrocardiography; lung; medical signal processing; physiological models; accurate numerical solution; arbitrary shape inhomogeneous volume conductor; body surface Laplacians computation algorithm; computer simulation results; electrodiagnostics; low-conductivity lungs; lung inhomogeneity effect; realistically shaped torso model; single dipole source; Biomedical engineering; Computational modeling; Computer simulation; Conductors; Electrocardiography; Helium; Laplace equations; Lungs; Shape; Torso; Algorithms; Computer Simulation; Electric Conductivity; Electrocardiography; Image Processing, Computer-Assisted; Lung; Models, Cardiovascular; Surface Properties;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
