TY - GEN
T1 - The effect of applying orthogonal projection technique in short window segments to obtain fetal magnetocardiogram
AU - Sriram, Bhargavi
AU - Wilson, James D.
AU - Govindan, Rathinaswamy B.
AU - Lowery, Curtis L.
AU - Preissl, Hubert
AU - Eswaran, Hari
PY - 2013
Y1 - 2013
N2 - Non-invasive recordings of fetal heart and brain have been possible for almost a decade with the advancement in biomagnetic sensors using the SQUID (Superconducting Quantum Interference Device) technology. Techniques such as orthogonal projection and ICA have been applied to attenuate interference from other biological sources such as maternal heart. Successful application of such techniques among other factors depend on the non-stationary characteristics of the signals. To minimize the effect of non-stationarity due to maternal and/or fetal movement in long duration datasets, we proposed to investigate the minimal time window that is needed to obtain averaging with good SNR to apply the orthogonal projection technique to attenuate maternal magnetocardiogram (MCG) and obtain fetal MCG. The quantifying measure is based on spectral power of signals from 151-channel SQUID array system.
AB - Non-invasive recordings of fetal heart and brain have been possible for almost a decade with the advancement in biomagnetic sensors using the SQUID (Superconducting Quantum Interference Device) technology. Techniques such as orthogonal projection and ICA have been applied to attenuate interference from other biological sources such as maternal heart. Successful application of such techniques among other factors depend on the non-stationary characteristics of the signals. To minimize the effect of non-stationarity due to maternal and/or fetal movement in long duration datasets, we proposed to investigate the minimal time window that is needed to obtain averaging with good SNR to apply the orthogonal projection technique to attenuate maternal magnetocardiogram (MCG) and obtain fetal MCG. The quantifying measure is based on spectral power of signals from 151-channel SQUID array system.
UR - https://www.scopus.com/pages/publications/84886549596
U2 - 10.1109/EMBC.2013.6609526
DO - 10.1109/EMBC.2013.6609526
M3 - Conference contribution
C2 - 24109713
AN - SCOPUS:84886549596
SN - 9781457702167
T3 - Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS
SP - 421
EP - 424
BT - 2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2013
T2 - 2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2013
Y2 - 3 July 2013 through 7 July 2013
ER -