Forward and inverse problem for cardiac magnetic field and electric potential using two boundary element methods |
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| Authors: | Tang Fa-Kuan Wang Qian Hua Ning Tang Xue-Zheng Lu Hong Ma Ping |
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| Affiliation: | Department of Cardiology, the 309th Hospital of PLA, Beijing 100091, China; Department of Physics, State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, Peking University, Beijing 100871, China |
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| Abstract: | This paper discusses the forward and inverse problem for cardiac magnetic fields and electric potentials. A torso-heart model established by boundary element method (BEM) is used for studying the distributions of cardiac magnetic fields and electric potentials. Because node-to-node and triangle-to-triangle BEM can lead to discrepant field distributions, their properties and influences are compared. Then based on constructed torso-heart model and supposed current source functional model–current dipole array, the magnetic and electric imaging by optimal constrained linear inverse method are applied at the same time. Through figure and reconstructing parameter comparison, though the magnetic current dipole array imaging possesses better reconstructing effect, however node-to-node BEM and triangle-to-triangle BEM make little difference to magnetic and electric imaging. |
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| Keywords: | cardiac magnetic imaging cardiac electric imaging boundary element method torso-heart model |
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