An Adaptive Laplacian Based Interpolation Algorithm for Noise Reduction in Body Surface Potential Maps

Body surface potential maps (BSPMs) are typically recorded from a large number of ECG leads that cover the entire thorax. This improves diagnostic accuracy and is required in Electrocardiographic imaging (ECGi). BSPMs recorded in the clinical setting may have some leads that are noisy due to poor sk...

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Vydáno v:Computing in cardiology Ročník 45; s. 1 - 4
Hlavní autoři: Rababah, Ali S, Finlay, Dewar D, Guldenring, Daniel, Bond, Raymond, McLaughlin, James D
Médium: Konferenční příspěvek
Jazyk:angličtina
Vydáno: Creative Commons Attribution 01.09.2018
Témata:
Electric potential
Electrodes
Heart
Image reconstruction
Interpolation
Laplace equations
Principal component analysis
ISSN:2325-887X
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Shrnutí:Body surface potential maps (BSPMs) are typically recorded from a large number of ECG leads that cover the entire thorax. This improves diagnostic accuracy and is required in Electrocardiographic imaging (ECGi). BSPMs recorded in the clinical setting may have some leads that are noisy due to poor skin electrode contact. We analyzed 117 lead BSPMs recorded from 360 subjects. We successively simulated the removal of ECG leads at various locations and tested the ability of our algorithm to accurately reconstruct the missing information. When seven electrodes were removed, the algorithm could reconstruct BSPM patterns from QRS segments with median RMSE of 6.24μV and 12.15μV and CC of 0.999 and 0.997 when Laplacian method and PCA based method were used respectively. This work shows that noisy BSPM leads, which often manifest in the clinical setting, can be more accurately reconstructed using our Laplacian based interpolation algorithm, when low number of missed electrodes in regions where electrodes are organised in a well distributed and tight mesh.
ISSN:2325-887X
DOI:10.22489/CinC.2018.259