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A method for the ECG inverse problem in the frequency domain

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Navarro, C, Turner, C, Escalona, OJ, Owens, C, Anderson, JMCC and Adgey, AAJ (2005) A method for the ECG inverse problem in the frequency domain. In: 18th IEEE Symposium on Computer-Based Medical Systems, Proceedings, Dublin, Ireland. UNSPECIFIED. 6 pp. [Conference contribution]

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Abstract

The Inverse ECG problem is ill-conditioned and its solution requires a relatively high computing effort. Additional constraints are required in order to obtain a stable solution. A method is proposed in which the solution of the inverse ECG problem is approached in the frequency domain, taking advantage of the assumption that propagation delays may be ignored and the quasi-periodicity of ECG. In this method usual Tikhonov zero-order constraints are applied to the amplitudes of the signals for a selected frequency domain. This method ensures faster solutions that are spatially and temporally well behaved. Calculation of epicardial electrograms is compared to a basic method.

Item Type:Conference contribution (Paper)
Keywords:epicardial potentials map, ECG inverse problem, ECG frequency analysis, cardiac mapping
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
Research Institutes and Groups:Engineering Research Institute
Engineering Research Institute > Nanotechnology & Integrated BioEngineering Centre (NIBEC)
ID Code:6015
Deposited By:Professor Omar Escalona
Deposited On:18 Jan 2010 10:24
Last Modified:28 Jun 2011 11:15

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