Time-variant auto regressive spectral analysis for the detection of ventricular late potentials

A. M. Bianchi, L. T. Mainardi, D. Castiglioni, L. Dalla Vecchia, F. Lomabardi, S. Cerutti

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

Abstract

A procedure of frequency domain analysis of Ventricular Late Potentials (VLP's) is proposed and tested on simulated signals and real recordings of high-resolution vectorcardiogram (VCG). The analysis is focused on the ending part of the QRS complex and on the ST segment of the averaged VCG. Firstly a Tchebytcheff polynomial interpolation is used in order to eliminate the QRS low frequency influence, and then the 'filtered' signal is analyzed by means of a time-variant autoregressive model that allows to evaluate a power spectral density (PSD) in correspondence of each sample and thus to track, in the frequency domain, the dynamical modification of the signal. A joint time-frequency representation is obtained that qualitatively enhances the differences between patients with and without VLP's. In addition some indices are introduced in order to give a quantitative description of the phenomenon.

Original languageEnglish
Title of host publicationProceedings of the Annual Conference on Engineering in Medicine and Biology
EditorsAndrew Y.J. Szeto, Rangaraj M. Rangayyan
PublisherPubl by IEEE
Pages719-720
Number of pages2
Volume15
Editionpt 2
ISBN (Print)0780313771
Publication statusPublished - 1993
EventProceedings of the 15th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Part 2 (of 3) - San Diego, CA, USA
Duration: Oct 28 1993Oct 31 1993

Other

OtherProceedings of the 15th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Part 2 (of 3)
CitySan Diego, CA, USA
Period10/28/9310/31/93

Fingerprint

Frequency domain analysis
Power spectral density
Spectrum analysis
Interpolation
Polynomials

ASJC Scopus subject areas

  • Bioengineering

Cite this

Bianchi, A. M., Mainardi, L. T., Castiglioni, D., Vecchia, L. D., Lomabardi, F., & Cerutti, S. (1993). Time-variant auto regressive spectral analysis for the detection of ventricular late potentials. In A. Y. J. Szeto, & R. M. Rangayyan (Eds.), Proceedings of the Annual Conference on Engineering in Medicine and Biology (pt 2 ed., Vol. 15, pp. 719-720). Publ by IEEE.

Time-variant auto regressive spectral analysis for the detection of ventricular late potentials. / Bianchi, A. M.; Mainardi, L. T.; Castiglioni, D.; Vecchia, L. Dalla; Lomabardi, F.; Cerutti, S.

Proceedings of the Annual Conference on Engineering in Medicine and Biology. ed. / Andrew Y.J. Szeto; Rangaraj M. Rangayyan. Vol. 15 pt 2. ed. Publ by IEEE, 1993. p. 719-720.

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

Bianchi, AM, Mainardi, LT, Castiglioni, D, Vecchia, LD, Lomabardi, F & Cerutti, S 1993, Time-variant auto regressive spectral analysis for the detection of ventricular late potentials. in AYJ Szeto & RM Rangayyan (eds), Proceedings of the Annual Conference on Engineering in Medicine and Biology. pt 2 edn, vol. 15, Publ by IEEE, pp. 719-720, Proceedings of the 15th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Part 2 (of 3), San Diego, CA, USA, 10/28/93.
Bianchi AM, Mainardi LT, Castiglioni D, Vecchia LD, Lomabardi F, Cerutti S. Time-variant auto regressive spectral analysis for the detection of ventricular late potentials. In Szeto AYJ, Rangayyan RM, editors, Proceedings of the Annual Conference on Engineering in Medicine and Biology. pt 2 ed. Vol. 15. Publ by IEEE. 1993. p. 719-720
Bianchi, A. M. ; Mainardi, L. T. ; Castiglioni, D. ; Vecchia, L. Dalla ; Lomabardi, F. ; Cerutti, S. / Time-variant auto regressive spectral analysis for the detection of ventricular late potentials. Proceedings of the Annual Conference on Engineering in Medicine and Biology. editor / Andrew Y.J. Szeto ; Rangaraj M. Rangayyan. Vol. 15 pt 2. ed. Publ by IEEE, 1993. pp. 719-720
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