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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Augustyniak, P. |
| Copyright Year | 2013 |
| Description | Author affiliation: AGH Univ. of Sci. & Technol., Krakow, Poland (Augustyniak, P.) |
| Abstract | This paper presents a coherence-based method for estimation of spatial or temporal variability of leads quality in a multichannel ECG record. The method is dedicated to stress test or Holter analyzers and aimed at providing an objective criterion for local assessment of data reliability (e.g. ST-segment elevation or depression) in presence of variable noise. The procedure starts with heartbeat segmentation followed by Fast Fourier Transform to the frequency domain. Consequently, autospectra and cospectra for each pair of signals are determined and the resulted coherence function is normalized and weighted by the noise spectrum (NS). Finally, a triangular matrix summarizes the coherence power and the ECG sections (beats or channels) are sorted accordingly to the value of Noise Estimate. With average accuracy of noise estimate of 11.23% for regular and of 3.0% for NS-weighted coherence, the method is accurate enough for beat-to-beat noise tracking and for a reliable selection of best channel in a multichannel ECG record. |
| Sponsorship | IEEE Eng. Med. Biol. Soc. |
| Starting Page | 787 |
| Ending Page | 790 |
| File Size | 636390 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781479908844 |
| ISSN | 2325887X |
| e-ISBN | 9781479908868 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2013-09-22 |
| Publisher Place | Spain |
| Access Restriction | Subscribed |
| Rights Holder | Creative Commons Attribution License 2.5 (CCAL) |
| Subject Keyword | Reliability Abstracts Monitoring Coherence Lead Cardiology Physiology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Computer Science Cardiology and Cardiovascular Medicine |
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