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Acoustics, Speech, and Signal Processing, IEEE International Conference on (2009)
Taipei, Taiwan
Apr. 19, 2009 to Apr. 24, 2009
ISBN: 978-1-4244-2353-8
pp: 341-344
Olivier Pietquin , IADI, Nancy University, Inserm ERI 13, CHU Nancy Brabois, France
Michel Kraemer , Schiller Médical SAS, Wissembourg, France
Jacques Felblinger , IADI, Nancy University, Inserm ERI 13, CHU Nancy Brabois, France
Julien Oster , IADI, Nancy University, Inserm ERI 13, CHU Nancy Brabois, France
Roger Abacherli , Schiller AG, Baar, Switzerland
ABSTRACT
Automatic Electrocardiogram (ECG) analysis, especially QRS detection, is still a challenging task. This is even more the case when ECG is acquired during Magnetic Resonance (MR) examination. The MR environment highly distorts ECG, with Hall Effect, due to the important static magnetic field, and artifacts, caused by fast switching magnetic field gradients. Detection of QRS complexes is then affected. In this paper, a new specific MR QRS detector is presented. This method is based on the modulus maximum lines and on the Lipschitz exponent estimation they offer. The use of this regularity characterization enables to distinguish between QRS complexes and MR artifacts. This detector outperforms existing algorithms with almost 99% sensitivity and positive prediction value.
INDEX TERMS
CITATION
Olivier Pietquin, Michel Kraemer, Jacques Felblinger, Julien Oster, Roger Abacherli, "A specific QRS detector for electrocardiography during MRI: Using wavelets and local regularity characterization", Acoustics, Speech, and Signal Processing, IEEE International Conference on, vol. 00, no. , pp. 341-344, 2009, doi:10.1109/ICASSP.2009.4959590
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