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

• Published in: Chinese physics B Vol. 19; no. 12; pp. 144 - 153
• Main Author: 唐发宽 王倩 华宁 唐雪正 陆宏 马平
• Format: Journal Article
• Language: English
• Published: IOP Publishing 01.12.2010
• Subjects: 反问题; 心脏模型; 最优化方法; 电势分布; 磁偶极子; 磁场分布; 边界元方法; 边界元法
• ISSN: 1674-1056; 2058-3834
• DOI: 10.1088/1674-1056/19/12/120601

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 triangleto-triangle BEM make little difference to magnetic and electric imaging.