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Inverse Problem of ECG for Different Equivalent Cardiac Sources

Xanthis, Christos LU ; Bonovas, P and Kyriacou, G (2007) In Progress In Electromagnetics Research Symposium p.267-271
Abstract
An improved solution of the non-linear and ill-posed inverse problem of electro-cardiography is presented. The hearts activity is modeled by three di®erent equivalent cardiac sources: 1 moving dipole, 2 and 5 fixed location rotating dipoles. For this purpose a three dimensional volume conductor model of the human body is constructed based on a classical anatomic atlas. This is excited by each one of the cardiac sources. For the inverse problem a Least Squares (LS) optimization scheme is employed, aiming at the matching of the potential distribution calculated on the torso surface to the corresponding distribution measured with the aid of multiple electrodes. The efficiency of the method stems from the employment of arbitrary shaped... (More)
An improved solution of the non-linear and ill-posed inverse problem of electro-cardiography is presented. The hearts activity is modeled by three di®erent equivalent cardiac sources: 1 moving dipole, 2 and 5 fixed location rotating dipoles. For this purpose a three dimensional volume conductor model of the human body is constructed based on a classical anatomic atlas. This is excited by each one of the cardiac sources. For the inverse problem a Least Squares (LS) optimization scheme is employed, aiming at the matching of the potential distribution calculated on the torso surface to the corresponding distribution measured with the aid of multiple electrodes. The efficiency of the method stems from the employment of arbitrary shaped hexahedral elements within the volume conductor model for the minimization of the required computational resources, while the model realistically reflects the body internal structure. Finally, the algorithm is successfully tested using measured data available online. (Less)
Please use this url to cite or link to this publication:
author
; and
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
Progress in Electromagnetics Research Symposium : PIERS2007 in Prague, Czech Republic, 27-30 August, 2007 - PIERS2007 in Prague, Czech Republic, 27-30 August, 2007
series title
Progress In Electromagnetics Research Symposium
pages
267 - 271
publisher
Electromagnetics Academy
external identifiers
  • scopus:84898822914
ISBN
978-161839052-3
language
English
LU publication?
no
id
5d3fd2e6-2335-42db-8633-af767a465b83
date added to LUP
2019-05-14 10:01:22
date last changed
2022-01-31 23:53:47
@inproceedings{5d3fd2e6-2335-42db-8633-af767a465b83,
  abstract     = {{An improved solution of the non-linear and ill-posed inverse problem of electro-cardiography is presented. The hearts activity is modeled by three di®erent equivalent cardiac sources: 1 moving dipole, 2 and 5 fixed location rotating dipoles. For this purpose a three dimensional volume conductor model of the human body is constructed based on a classical anatomic atlas. This is excited by each one of the cardiac sources. For the inverse problem a Least Squares (LS) optimization scheme is employed, aiming at the matching of the potential distribution calculated on the torso surface to the corresponding distribution measured with the aid of multiple electrodes. The efficiency of the method stems from the employment of arbitrary shaped hexahedral elements within the volume conductor model for the minimization of the required computational resources, while the model realistically reflects the body internal structure. Finally, the algorithm is successfully tested using measured data available online.}},
  author       = {{Xanthis, Christos and Bonovas, P and Kyriacou, G}},
  booktitle    = {{Progress in Electromagnetics Research Symposium : PIERS2007 in Prague, Czech Republic, 27-30 August, 2007}},
  isbn         = {{978-161839052-3}},
  language     = {{eng}},
  pages        = {{267--271}},
  publisher    = {{Electromagnetics Academy}},
  series       = {{Progress In Electromagnetics Research Symposium}},
  title        = {{Inverse Problem of ECG for Different Equivalent Cardiac Sources}},
  year         = {{2007}},
}