Estimates of endocardial potentials from non-contact intracavitary probes

Robert Throne, Lorraine Olson, John Windle, Jeff Schweitzer, Eric Voth

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

The EnSite™ intracavitary probe system developed by Endocardial Solutions, Inc (St. Jude Medical, St. Paul, MN) was used to simultaneously record geometric information, probe potentials, and selected endocardial potentials within the right atria for four patients. Tikhonov regularization was then used to estimate endocardial potentials from probe measurements for each patient at each endocardial site. The correlation coefficients and relative errors between the estimated potentials and the measured endocardial potentials were then calculated. This inverse problem was quite ill-conditioned, and first-order Tikhonov regularization performed better than zero-order or second-order Tikhonov regularization in producing stable and accurate results. In choosing the regularization parameter μ, a constant value of μ=0.3 performed as well as CRESO and Maximum Curvature, which pick a different μ for each time instant.

Original languageEnglish (US)
Title of host publication28th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS'06
Pages2560-2563
Number of pages4
DOIs
StatePublished - 2006
Event28th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS'06 - New York, NY, United States
Duration: Aug 30 2006Sep 3 2006

Publication series

NameAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
ISSN (Print)0589-1019

Conference

Conference28th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS'06
CountryUnited States
CityNew York, NY
Period8/30/069/3/06

ASJC Scopus subject areas

  • Signal Processing
  • Biomedical Engineering
  • Computer Vision and Pattern Recognition
  • Health Informatics

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  • Cite this

    Throne, R., Olson, L., Windle, J., Schweitzer, J., & Voth, E. (2006). Estimates of endocardial potentials from non-contact intracavitary probes. In 28th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS'06 (pp. 2560-2563). [4029068] (Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings). https://doi.org/10.1109/IEMBS.2006.260545