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Extraction of the magnetohydrodynamic blood flow potential from the surface electrocardiogram in magnetic resonance imaging

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Abstract

The magnetohydrodynamic effect generates voltages related to blood flow, which are superimposed on the electrocardiogram (ECG) used for gating during cardiac magnetic resonance imaging (MRI). A method is presented for extracting the magnetohydrodynamic signal from the ECG. The extracted magnetohydrodynamic blood flow potential may be physiologically meaningful due to its relationship to blood flow. Removal of the magnetohydrodynamic voltages from the ECG can potentially lead to improved gating and diagnostically useful ECGs.

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Abbreviations

MHD:

Magnetohydrodynamic

MRI:

Magnetic resonance imaging

ECG:

Electrocardiogram

PC:

Phase contrast

GRE:

Gradient echo

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Acknowledgments

This material is based upon work supported under a National Science Foundation Graduate Research Fellowship, NIH HL079148, and a grant from the Dr. Scholl Foundation.

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Authors and Affiliations

  1. Department of Electrical Engineering and Computer Science, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208, USA

    Grace M. Nijm, Steven Swiryn, Andrew C. Larson & Alan V. Sahakian

  2. HeartCare Midwest, Peoria, IL, USA

    Steven Swiryn

  3. Department of Radiology, Northwestern University Medical School, Chicago, IL, USA

    Andrew C. Larson

  4. Department of Biomedical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208, USA

    Andrew C. Larson & Alan V. Sahakian

Authors
  1. Grace M. Nijm
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  2. Steven Swiryn
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  3. Andrew C. Larson
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  4. Alan V. Sahakian
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Corresponding author

Correspondence to Alan V. Sahakian.

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Nijm, G.M., Swiryn, S., Larson, A.C. et al. Extraction of the magnetohydrodynamic blood flow potential from the surface electrocardiogram in magnetic resonance imaging. Med Biol Eng Comput 46, 729–733 (2008). https://doi.org/10.1007/s11517-008-0307-1

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  • DOI: https://doi.org/10.1007/s11517-008-0307-1

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