Atrial Fibrillation ECG Signal Processing for QRST Cancellation: Zero-Padding versus Time Alignment

S Gholinezhadasnefestani; OJ Escalona; NC Castro; K Nazarzadeh; V Kodoth; E Lau; G Manoharan

doi:10.1109/Andescon.2012.20

Atrial Fibrillation ECG Signal Processing for QRST Cancellation: Zero-Padding versus Time Alignment

S Gholinezhadasnefestani, OJ Escalona, NC Castro, K Nazarzadeh, V Kodoth, E Lau, G Manoharan

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

In non-invasive analysis of atrial fibrillation (AF), the QRST cancellation is commonly applied by using a time-aligned average over several ECG cycles. This paper proposes another technique with less illusive high frequency content into the residual signal. Firstly the QRS complexes and T-end were detected by Pan-Tompkins's technique and Zhang's algorithm respectively. Subsequently, the QRST segment was determined in eachperiod of the ECG signal. Then, two different approaches (time-aligned and zero padding) were applied to remove the QRST segments from each period and make the signalready for AF analysis. To compare the effectiveness of the QRST cancellation approaches, mean spectral power of the residual signal at high frequency bands (upper 12 Hz)was used. The results indicated a superiority of the timealigned averaging method for the application of AF analysis.

Original language	English
Title of host publication	Unknown Host Publication
Publisher	IEEE Computer Society
Pages	45-48
Number of pages	4
ISBN (Print)	978-0-7695-4882-1/12
DOIs	https://doi.org/10.1109/Andescon.2012.20
Publication status	Published (in print/issue) - 15 Dec 2012
Event	IEEE Andean Region International Conference 2012 (Andescon 2012) - Cuenca, Ecuador Duration: 15 Dec 2012 → … http://andescon2012.org/index.php/congreso2012/andesconcuenca

Conference

Conference	IEEE Andean Region International Conference 2012 (Andescon 2012)
Period	15/12/12 → …
Internet address	http://andescon2012.org/index.php/congreso2012/andesconcuenca

Keywords

QRS cancellation
ECG
cardiology
frequency analysis
signal averaging
atrial fibrillation
AF cardioversion
zero padding
power density spectrum.

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10.1109/Andescon.2012.20

Cite this

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title = "Atrial Fibrillation ECG Signal Processing for QRST Cancellation: Zero-Padding versus Time Alignment",

abstract = "In non-invasive analysis of atrial fibrillation (AF), the QRST cancellation is commonly applied by using a time-aligned average over several ECG cycles. This paper proposes another technique with less illusive high frequency content into the residual signal. Firstly the QRS complexes and T-end were detected by Pan-Tompkins's technique and Zhang's algorithm respectively. Subsequently, the QRST segment was determined in eachperiod of the ECG signal. Then, two different approaches (time-aligned and zero padding) were applied to remove the QRST segments from each period and make the signalready for AF analysis. To compare the effectiveness of the QRST cancellation approaches, mean spectral power of the residual signal at high frequency bands (upper 12 Hz)was used. The results indicated a superiority of the timealigned averaging method for the application of AF analysis.",

keywords = "QRS cancellation, ECG, cardiology, frequency analysis, signal averaging, atrial fibrillation, AF cardioversion, zero padding, power density spectrum.",

author = "S Gholinezhadasnefestani and OJ Escalona and NC Castro and K Nazarzadeh and V Kodoth and E Lau and G Manoharan",

year = "2012",

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doi = "10.1109/Andescon.2012.20",

language = "English",

isbn = "978-0-7695-4882-1/12",

pages = "45--48",

booktitle = "Unknown Host Publication",

publisher = "IEEE Computer Society",

address = "United States",

note = "IEEE Andean Region International Conference 2012 (Andescon 2012) ; Conference date: 15-12-2012",

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Gholinezhadasnefestani, S, Escalona, OJ, Castro, NC, Nazarzadeh, K, Kodoth, V, Lau, E & Manoharan, G 2012, Atrial Fibrillation ECG Signal Processing for QRST Cancellation: Zero-Padding versus Time Alignment. in Unknown Host Publication. IEEE Computer Society, pp. 45-48, IEEE Andean Region International Conference 2012 (Andescon 2012), 15/12/12. https://doi.org/10.1109/Andescon.2012.20

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AU - Gholinezhadasnefestani, S

AU - Escalona, OJ

AU - Castro, NC

AU - Nazarzadeh, K

AU - Kodoth, V

AU - Lau, E

AU - Manoharan, G

PY - 2012/12/15

Y1 - 2012/12/15

N2 - In non-invasive analysis of atrial fibrillation (AF), the QRST cancellation is commonly applied by using a time-aligned average over several ECG cycles. This paper proposes another technique with less illusive high frequency content into the residual signal. Firstly the QRS complexes and T-end were detected by Pan-Tompkins's technique and Zhang's algorithm respectively. Subsequently, the QRST segment was determined in eachperiod of the ECG signal. Then, two different approaches (time-aligned and zero padding) were applied to remove the QRST segments from each period and make the signalready for AF analysis. To compare the effectiveness of the QRST cancellation approaches, mean spectral power of the residual signal at high frequency bands (upper 12 Hz)was used. The results indicated a superiority of the timealigned averaging method for the application of AF analysis.

AB - In non-invasive analysis of atrial fibrillation (AF), the QRST cancellation is commonly applied by using a time-aligned average over several ECG cycles. This paper proposes another technique with less illusive high frequency content into the residual signal. Firstly the QRS complexes and T-end were detected by Pan-Tompkins's technique and Zhang's algorithm respectively. Subsequently, the QRST segment was determined in eachperiod of the ECG signal. Then, two different approaches (time-aligned and zero padding) were applied to remove the QRST segments from each period and make the signalready for AF analysis. To compare the effectiveness of the QRST cancellation approaches, mean spectral power of the residual signal at high frequency bands (upper 12 Hz)was used. The results indicated a superiority of the timealigned averaging method for the application of AF analysis.

KW - QRS cancellation

KW - ECG

KW - cardiology

KW - frequency analysis

KW - signal averaging

KW - atrial fibrillation

KW - AF cardioversion

KW - zero padding

KW - power density spectrum.

UR - http://www.computer.org/portal/web/cspress/home

U2 - 10.1109/Andescon.2012.20

DO - 10.1109/Andescon.2012.20

M3 - Conference contribution

SN - 978-0-7695-4882-1/12

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EP - 48

BT - Unknown Host Publication

PB - IEEE Computer Society

T2 - IEEE Andean Region International Conference 2012 (Andescon 2012)

Y2 - 15 December 2012

ER -

Atrial Fibrillation ECG Signal Processing for QRST Cancellation: Zero-Padding versus Time Alignment

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