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.
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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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