A new magneto-cardiogram study using a vector model with a virtual heart and the boundary element method  

作　　者：张琛 寿国法 陆宏 华宁 唐雪正 夏灵 马平 唐发宽 

机构地区：[1]Department of Cardiology,the 309th Hospital of PLA [2]Applied Superconductivity Research Center of Peking University,Department of Physics,State Key Laboratory for Artificial Microstructure and Mesoscopic Physics,Peking University [3]Department of Biomedical Engineering,Key Laboratory for Biomedical Engineering of the Ministry of Education,Zhejiang University

出　　处：《Chinese Physics B》2013年第9期348-352,共5页中国物理B（英文版）

基　　金：supported by the State Key Development Program for Basic Research of China (Grant No. 2011CBA00106);the National Natural Science Foundation of China (Grant Nos. 10674006, 81171421, and 61101046);the National High Technology Research and Development Program of China (Grant No. 2007AA03Z238)

摘　　要：A cardiac vector model is presented and verified, and then the forward problem for cardiac magnetic fields and electric potential are discussed based on this model and the realistic human torso volume conductor model, including lungs. A torso-cardiac vector model is used for a 12-lead electrocardiographic （ECG） and magneto-cardiogram （MCG） simulation study by using the boundary element method （BEM）. Also, we obtain the MCG wave picture using a compound four-channel HTc.SQUID system in a magnetically shielded room. By comparing the simulated results and experimental results, we verify the cardiac vector model and then do a preliminary study of the forward problem of MCG and ECG. Therefore, the results show that the vector model is reasonable in cardiac electrophysiology.A cardiac vector model is presented and verified, and then the forward problem for cardiac magnetic fields and electric potential are discussed based on this model and the realistic human torso volume conductor model, including lungs. A torso-cardiac vector model is used for a 12-lead electrocardiographic （ECG） and magneto-cardiogram （MCG） simulation study by using the boundary element method （BEM）. Also, we obtain the MCG wave picture using a compound four-channel HTc.SQUID system in a magnetically shielded room. By comparing the simulated results and experimental results, we verify the cardiac vector model and then do a preliminary study of the forward problem of MCG and ECG. Therefore, the results show that the vector model is reasonable in cardiac electrophysiology.

关 键 词：magneto-cardiogram cardiac vector model boundary element method realistic human torso 

分 类 号：O241.82[理学—计算数学] R312[理学—数学]