The forward and inverse problem of cardiac magnetic fields based on concentric ellipsoid torso-heart model

This paper constructs a concentric ellipsoid torso-heart model by boundary element method and investigates the impacts of model structures on the cardiac magnetic fields generated by both equivalent primary source--a current dipole and volume currents. Then by using the simulated magnetic fields bas...

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Bibliographic Details
Published inChinese physics B Vol. 19; no. 8; pp. 276 - 286
Main Author 王倩 华宁 唐雪正 陆宏 马平 唐发宽
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.08.2010
Subjects
Arrays
Boundaries
Construction
Dipoles
Ellipsoids
Inverse method
Magnetic fields
Reconstruction
反演问题
基础
心脏模型
椭圆形
正演
电流源
磁场
躯干
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ISSN1674-1056
2058-3834
DOI10.1088/1674-1056/19/8/080601

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Summary:This paper constructs a concentric ellipsoid torso-heart model by boundary element method and investigates the impacts of model structures on the cardiac magnetic fields generated by both equivalent primary source--a current dipole and volume currents. Then by using the simulated magnetic fields based on torso-heart model as input, the cardiac current sources--an array of current dipoles by optimal constrained linear inverse method are constructed. Next, the current dipole array reconstruction considering boundaries is compared with that in an unbounded homogeneous medium. Furthermore, the influence of random noise on reconstruction is also considered and the reconstructing effect is judged by several reconstructing parameters.
Bibliography:O241.82
TS951.73
concentric ellipsoid torso-heart model, boundary element method, current dipole array reconstruction, optimal constrained linear inverse method
11-5639/O4
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/19/8/080601