Wavelet-based event detection in implantable cardiac rhythm management devices
Author
Summary, in English
This paper presents a novel event detector for implantable devices. The algorithm is based on a signal model which describes an event as a linear combination of basis functions. The linear combination involves two fundamental electrogram waveforms represented at different time scales. An efficient, low-complexity detector is developed using the dyadic wavelet transform with integer filter coefficients, and a generalized likelihood ratio test. The results show that reliable detection is obtained at an intermediate signal-to-noise ratio (SNR = 25 dB) for various common noise sources. In terms of probabilities of missed events and false alarms, an over-all performance of 0.7% and 0.1%, respectively, was achieved on electrograms corrupted by the different noise types at an intermediate SNR.
Publishing year
2006
Language
English
Pages
478-484
Publication/Series
IEEE Transactions on Biomedical Engineering
Volume
53
Issue
3
Document type
Journal article
Publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
Topic
- Medical Engineering
Keywords
- event detection
- implantable cardiac devices
- electrogram
- pacemakers
- wavelets
Status
Published
ISBN/ISSN/Other
- ISSN: 1558-2531