<abstract xmlns="http://www.w3.org/1999/xhtml"><p> Location of premature ectopic ventricular activity was assessed noninvasively in five patients using integral body surface potential maps and inverse solution in terms of a single dipole. Precision of the inverse solution was studied using three different torso models: homogeneous torso model, inhomogeneous torso model including lungs and heart ventricles and inhomogeneous torso model including lungs, heart ventricles and atria, aorta and pulmonary artery. More stable results were obtained using the homogeneous model. However, in some patients the location of the resulting dipole representing the focus of ectopic activity was shifted between solutions using the homogeneous and inhomogeneous models. Comparison of solutions with inhomogeneous torso models did not show significantly different dispersions, but localization of the focus was better when a torso model including atria and arteries was used. The obtained results suggest that presented noninvasive localization of the ectopic focus can be used to shorten the time needed for successful ablation and to increase its success rate.</p></abstract>

Location of premature ectopic ventricular activity was assessed noninvasively in five patients using integral body surface potential maps and inverse solution in terms of a single dipole. Precision of the inverse solution was studied using three different torso models: homogeneous torso model, inhomogeneous torso model including lungs and heart ventricles and inhomogeneous torso model including lungs, heart ventricles and atria, aorta and pulmonary artery. More stable results were obtained using the homogeneous model. However, in some patients the location of the resulting dipole representing the focus of ectopic activity was shifted between solutions using the homogeneous and inhomogeneous models. Comparison of solutions with inhomogeneous torso models did not show significantly different dispersions, but localization of the focus was better when a torso model including atria and arteries was used. The obtained results suggest that presented noninvasive localization of the ectopic focus can be used to shorten the time needed for successful ablation and to increase its success rate.

Influence of Torso Model Complexity on the Noninvasive Localization of Ectopic Ventricular Activity

Department of Biomedical Technology, Faculty of Biomedical Engineering, Czech Technical University in Prague, nám. Sítná 3105, 27201, Kladno, Czech Republic

Institute of Measurement Science Slovak Academy of Sciences, Department of Biomeasurements, Dúbravská cesta, 9, 84104, Bratislava, Slovakia

Department of Biomedical Technology, Faculty of Biomedical Engineering, Czech Technical University in Prague,nám. Sítná 3105, 27201, Kladno, Czech Republic

3rd Faculty of Medicine, Charles University and Cardiocenter, University Hospital Královské Vinohrady, Šrobárova, 50, 10034, Prague, Czech Republic

Measurement Science Review

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Location of premature ectopic ventricular activity was assessed noninvasively in five patients using integral body surface potential maps and inverse solution...

Influence of Torso Model Complexity on the Noninvasive Localization of Ectopic Ventricular Activity

Published Online: May 06, 2016

Page range: 96 - 102

Received: Jan 28, 2016

Accepted: Apr 11, 2016

DOI: https://doi.org/10.1515/msr-2016-0013

Keywords
Body surface potential mapping, ectopic activation, premature ventricular contraction, inhomogeneous torso model, inverse problem of electrocardiography

© by Olena Punshchykova

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Influence of Torso Model Complexity on the Noninvasive Localization of Ectopic Ventricular Activity

Published Online: May 06, 2016

Page range: 96 - 102

Received: Jan 28, 2016

Accepted: Apr 11, 2016

DOI: https://doi.org/10.1515/msr-2016-0013

KeywordsBody surface potential mapping, ectopic activation, premature ventricular contraction, inhomogeneous torso model, inverse problem of electrocardiography

© by Olena Punshchykova

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
Body surface potential mapping, ectopic activation, premature ventricular contraction, inhomogeneous torso model, inverse problem of electrocardiography