Probabilistic source separation for robust fetal electrocardiography

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4 Citations (Scopus)

Abstract

Blind source separation (BSS) techniques are widely used to extract signals of interest from a mixture with other signals, such as extracting fetal electrocardiogram (ECG) signals from noninvasive recordings on the maternal abdomen. These BSS techniques, however, typically lack possibilities to incorporate any prior knowledge on the mixing of the source signals. Particularly for fetal ECG signals, knowledge on the mixing is available based on the origin and propagation properties of these signals. In this paper, a novel source separationmethod is developed that combines the strengths and accuracy of BSS techniques with the robustness of an underlying physiological model of the fetal ECG.The method is developed within a probabilistic framework and yields an iterative convergence of the separation matrix towards a maximum a posteriori estimation, where in each iteration the latest estimate of the separation matrix is corrected towards a tradeoff between the BSS technique and the physiological model. The method is evaluated by comparing its performance with that of FastICA on both simulated and real multichannel fetal ECG recordings, demonstrating that the developed method outperforms FastICA in extracting the fetal ECG source signals.
Original languageEnglish
Title of host publicationProceedings of the 4th Dutch Biomedical Engineering Conference, 24-25 January 2013, Egmond aan Zee, The Netherlands
Publication statusPublished - 2013
Event4th Dutch Bio-Medical Engineering Conference (BME 2013), January 24-25, 2013, Egmond aan Zee, The Netherlands - Hotel Zuiderduin, Egmond aan Zee, Netherlands
Duration: 24 Jan 201325 Jan 2013
http://bme2013.fyper.com/

Conference

Conference4th Dutch Bio-Medical Engineering Conference (BME 2013), January 24-25, 2013, Egmond aan Zee, The Netherlands
Abbreviated titleBME 2013
CountryNetherlands
CityEgmond aan Zee
Period24/01/1325/01/13
Other4th Biomedical Engineering conference (Egmond aan Zee)
Internet address

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