A method for magnetocardiography functional localization based on boundary element method and Nelder–Mead simplex algorithm

Abstract Background The magnetocardiography (MCG) functional localization can transfer the biomagnetic signal to the electrical activity information inside the heart. The electrical activity is directly related to the physiological function of the heart. Methods This study proposes a practical metho...

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Autores principales:	Zhihong Lu, Dingsong Jiang, Jianzhong Yang
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2021
Materias:	boundary element method inverse problem magnetocardiography modeling Nelder–Mead simplex algorithm single equivalent moving current dipole Diseases of the circulatory (Cardiovascular) system RC666-701
Acceso en línea:	https://doaj.org/article/8d34b4ec047b443cbfb43ac19859c957
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spelling	oai:doaj.org-article:8d34b4ec047b443cbfb43ac19859c9572021-11-12T11:40:14ZA method for magnetocardiography functional localization based on boundary element method and Nelder–Mead simplex algorithm1542-474X1082-720X10.1111/anec.12879https://doaj.org/article/8d34b4ec047b443cbfb43ac19859c9572021-11-01T00:00:00Zhttps://doi.org/10.1111/anec.12879https://doaj.org/toc/1082-720Xhttps://doaj.org/toc/1542-474XAbstract Background The magnetocardiography (MCG) functional localization can transfer the biomagnetic signal to the electrical activity information inside the heart. The electrical activity is directly related to the physiological function of the heart. Methods This study proposes a practical method for MCG functional localization based on the boundary element method (BEM) and the Nelder–Mead (NM) simplex algorithm. Single equivalent moving current dipole (SEMCD) is served as the equivalent cardiac source. The parameters of SEMCD are adapted using the NM simplex algorithm by fitting the measured MCG with the calculated MCG obtained based on BEM. The SEMCD parameters are solved in the sense that the difference between measured and calculated MCG is minimized. Results The factors affecting the localization accuracy of this BEM–NM method were first explored with synthetic signals. Then, the results with real MCG signals show a good agreement between the SEMCD location and the region where ventricle depolarization starts, demonstrating the feasibility of this idea. Conclusions This is the first three‐dimensional localization of the onset of ventricular depolarization with the BEM–NM method. The method is promising in the noninvasive localization of lesions for heart diseases.Zhihong LuDingsong JiangJianzhong YangWileyarticleboundary element methodinverse problemmagnetocardiography modelingNelder–Mead simplex algorithmsingle equivalent moving current dipoleDiseases of the circulatory (Cardiovascular) systemRC666-701ENAnnals of Noninvasive Electrocardiology, Vol 26, Iss 6, Pp n/a-n/a (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	boundary element method inverse problem magnetocardiography modeling Nelder–Mead simplex algorithm single equivalent moving current dipole Diseases of the circulatory (Cardiovascular) system RC666-701
spellingShingle	boundary element method inverse problem magnetocardiography modeling Nelder–Mead simplex algorithm single equivalent moving current dipole Diseases of the circulatory (Cardiovascular) system RC666-701 Zhihong Lu Dingsong Jiang Jianzhong Yang A method for magnetocardiography functional localization based on boundary element method and Nelder–Mead simplex algorithm
description	Abstract Background The magnetocardiography (MCG) functional localization can transfer the biomagnetic signal to the electrical activity information inside the heart. The electrical activity is directly related to the physiological function of the heart. Methods This study proposes a practical method for MCG functional localization based on the boundary element method (BEM) and the Nelder–Mead (NM) simplex algorithm. Single equivalent moving current dipole (SEMCD) is served as the equivalent cardiac source. The parameters of SEMCD are adapted using the NM simplex algorithm by fitting the measured MCG with the calculated MCG obtained based on BEM. The SEMCD parameters are solved in the sense that the difference between measured and calculated MCG is minimized. Results The factors affecting the localization accuracy of this BEM–NM method were first explored with synthetic signals. Then, the results with real MCG signals show a good agreement between the SEMCD location and the region where ventricle depolarization starts, demonstrating the feasibility of this idea. Conclusions This is the first three‐dimensional localization of the onset of ventricular depolarization with the BEM–NM method. The method is promising in the noninvasive localization of lesions for heart diseases.
format	article
author	Zhihong Lu Dingsong Jiang Jianzhong Yang
author_facet	Zhihong Lu Dingsong Jiang Jianzhong Yang
author_sort	Zhihong Lu
title	A method for magnetocardiography functional localization based on boundary element method and Nelder–Mead simplex algorithm
title_short	A method for magnetocardiography functional localization based on boundary element method and Nelder–Mead simplex algorithm
title_full	A method for magnetocardiography functional localization based on boundary element method and Nelder–Mead simplex algorithm
title_fullStr	A method for magnetocardiography functional localization based on boundary element method and Nelder–Mead simplex algorithm
title_full_unstemmed	A method for magnetocardiography functional localization based on boundary element method and Nelder–Mead simplex algorithm
title_sort	method for magnetocardiography functional localization based on boundary element method and nelder–mead simplex algorithm
publisher	Wiley
publishDate	2021
url	https://doaj.org/article/8d34b4ec047b443cbfb43ac19859c957
work_keys_str_mv	AT zhihonglu amethodformagnetocardiographyfunctionallocalizationbasedonboundaryelementmethodandneldermeadsimplexalgorithm AT dingsongjiang amethodformagnetocardiographyfunctionallocalizationbasedonboundaryelementmethodandneldermeadsimplexalgorithm AT jianzhongyang amethodformagnetocardiographyfunctionallocalizationbasedonboundaryelementmethodandneldermeadsimplexalgorithm AT zhihonglu methodformagnetocardiographyfunctionallocalizationbasedonboundaryelementmethodandneldermeadsimplexalgorithm AT dingsongjiang methodformagnetocardiographyfunctionallocalizationbasedonboundaryelementmethodandneldermeadsimplexalgorithm AT jianzhongyang methodformagnetocardiographyfunctionallocalizationbasedonboundaryelementmethodandneldermeadsimplexalgorithm
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A method for magnetocardiography functional localization based on boundary element method and Nelder–Mead simplex algorithm

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