A Comparison of Discretization Methods for the Inverse Problem of Electrocardiography

Author: Bear, L; Cheng, L; Dubois, R; Loiselle, Denis; Smaill, Bruce

Date: 2016

Publisher: IEEE

Type: Conference item

Link to this item using this URL: http://hdl.handle.net/2292/43451

The University of Auckland Library

Abstract

Epicardial electrical activity reconstructed non-invasively from body surface potentials is currently used clinically to map electrical activity. Here, two methods for solving this problem are evaluated using in-vivo experimental data: A coupled Finite-Boundary Element Method (F-BEM) and the Method of Fundamental Solutions (MFS). Results showed similar accuracy, with a slight improvement of the MFS over the F-BEM in reconstructing ventricular electrogram magnitude, (REmean = 0.83 ?? 0.09 and 0.86 ?? 0.08 respectively; in the reconstructing activation maps (CC = 0.75??0.09 and 0.73??0.12) and localization of initial activation sites (LE = 19 ?? 22 mm and 27??22 mm), though these were still not identified reliably. No improvement was seen with the inclusion of inhomogeneous structures in the F-BEM models (p > 0.05). With the additional advantages in ease of implementation, the MFS is the preferred approach in this case.

Subjects: Science & Technology, Life Sciences & Biomedicine, Technology, Cardiac & Cardiovascular Systems, Computer Science, Interdisciplinary Applications, Engineering, Biomedical, Cardiovascular System & Cardiology, Computer Science, Engineering

Citation: ["43rd Computing in Cardiology Conference (CinC), Vancouver, CANADA, 11 Sep 2016 - 14 Sep 2016. Editors: Murray A. 2016 Computing in Cardiology Conference (CINC), VOL 43. IEEE. 43: 321-324. 01 Jan 2016"]

Copyright: https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm