TY - GEN
T1 - Pseudo synchronization resampling to enhance T wave alternans detection
AU - Li, Tao
AU - Xiang, Kui
AU - Sun, Jian
AU - Ge, Yunjian
PY - 2011
Y1 - 2011
N2 - T wave alternans (TWA) detection and its corresponding time alignment algorithm are often confined by the phase fluctuation caused by heart rate variability (HRV). A pseudo synchronization resampling (PSR) method was presented to enhance the TWA detection in ECG data contaminated by HRV. Two important steps, instantaneous heart rate (IHR) estimation and ECG data resampling, were designed to build the PSR method which filtered the stretch effect of HRV. Synthesized data and real ECG data were provided to test the PSR method, and the number of invalid beats in alignment was used as test standard. The invalid beats in synthesized data vanished after PSR only with the simple absolute IHR estimation, and those in real ECG data reduced from 59.3% to 31.3% if the PSR with relative IHR was used. The results proved that the PSR operation could significantly improve the beats alignment and enhance T wave alternans detection.
AB - T wave alternans (TWA) detection and its corresponding time alignment algorithm are often confined by the phase fluctuation caused by heart rate variability (HRV). A pseudo synchronization resampling (PSR) method was presented to enhance the TWA detection in ECG data contaminated by HRV. Two important steps, instantaneous heart rate (IHR) estimation and ECG data resampling, were designed to build the PSR method which filtered the stretch effect of HRV. Synthesized data and real ECG data were provided to test the PSR method, and the number of invalid beats in alignment was used as test standard. The invalid beats in synthesized data vanished after PSR only with the simple absolute IHR estimation, and those in real ECG data reduced from 59.3% to 31.3% if the PSR with relative IHR was used. The results proved that the PSR operation could significantly improve the beats alignment and enhance T wave alternans detection.
KW - Pseudo synchronization resampling
KW - T wave alternans
KW - heart rate variability
KW - time alignment
UR - http://www.scopus.com/inward/record.url?scp=84862939044&partnerID=8YFLogxK
U2 - 10.1109/BMEI.2011.6098467
DO - 10.1109/BMEI.2011.6098467
M3 - Conference contribution
AN - SCOPUS:84862939044
SN - 9781424493524
T3 - Proceedings - 2011 4th International Conference on Biomedical Engineering and Informatics, BMEI 2011
SP - 818
EP - 822
BT - Proceedings - 2011 4th International Conference on Biomedical Engineering and Informatics, BMEI 2011
T2 - 2011 4th International Conference on Biomedical Engineering and Informatics, BMEI 2011
Y2 - 15 October 2011 through 17 October 2011
ER -