Forward and inverse problem for cardiac magnetic field and electric potential using two boundary element methods

doi:10.1088/1674-1056/19/12/120601

中国物理B ›› 2010, Vol. 19 ›› Issue (12): 120601-120601.doi: 10.1088/1674-1056/19/12/120601

Forward and inverse problem for cardiac magnetic field and electric potential using two boundary element methods

唐发宽¹, 华宁¹, 唐雪正¹, 陆宏¹, 王倩², 马平³

(1)Department of Cardiology, the 309th Hospital of PLA, Beijing 100091, China; (2)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; (3)Department of Physics, State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, Peking University, Beijing 100871, China

收稿日期:2010-04-03 修回日期:2010-08-04 出版日期:2010-12-15 发布日期:2010-12-15
基金资助:
Project supported by the State Key Development Program for Basic Research of China (Grant No. 2006CB601007), the National Natural Science Foundation of China (Grant No. 10674006), and the National High Technology Research and Development Program of China (Grant No. 2007AA03Z238).

Forward and inverse problem for cardiac magnetic field and electric potential using two boundary element methods

Tang Fa-Kuan(唐发宽)^a), Wang Qian(王倩)^a)b), Hua Ning(华宁)^a), Tang Xue-Zheng(唐雪正)^a), Lu Hong(陆宏)^a), and Ma Ping(马平)^b)†

^a Department of Cardiology, the 309th Hospital of PLA, Beijing 100091, China; ^b Department of Physics, State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, Peking University, Beijing 100871, China

Received:2010-04-03 Revised:2010-08-04 Online:2010-12-15 Published:2010-12-15
Supported by:
Project supported by the State Key Development Program for Basic Research of China (Grant No. 2006CB601007), the National Natural Science Foundation of China (Grant No. 10674006), and the National High Technology Research and Development Program of China (Grant No. 2007AA03Z238).

摘要/Abstract

摘要： 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.

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.

Key words: cardiac magnetic imaging, cardiac electric imaging, boundary element method, torso-heart model

中图分类号: (Inverse problems)

02.30.Zz

87.19.Hh (Cardiac dynamics) 87.19.R- (Mechanical and electrical properties of tissues and organs) 87.57.C- (Image quality) 87.57.N- (Image analysis) 87.80.-y (Biophysical techniques (research methods))

唐发宽, 王倩, 华宁, 唐雪正, 陆宏, 马平. Forward and inverse problem for cardiac magnetic field and electric potential using two boundary element methods[J]. 中国物理B, 2010, 19(12): 120601-120601.

Tang Fa-Kuan(唐发宽), Wang Qian(王倩), Hua Ning(华宁), Tang Xue-Zheng(唐雪正), Lu Hong(陆宏), and Ma Ping(马平). Forward and inverse problem for cardiac magnetic field and electric potential using two boundary element methods[J]. Chin. Phys. B, 2010, 19(12): 120601-120601.

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Forward and inverse problem for cardiac magnetic field and electric potential using two boundary element methods

Forward and inverse problem for cardiac magnetic field and electric potential using two boundary element methods

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