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ECG Electrode Placement for Magnetohydrodynamic Voltage Suppression and improving Cardiac Gating in High-field MRI

Institution:
1Department of Engineering, The University of Georgia, Athens, GA, USA.
2Department of Radiology, Emory University Hospital, Atlanta, GA, USA.
3Department of Radiology, Brigham and Women’s Hospital, Boston, MA, USA.
Publication Date:
Jan-2016
Citation:
Soc. Cardiac MRI Annual Meeting, Los Angeles, CA, 2016 Jan; P328.
Appears in Collections:
Cardiac MRI Annual Meeting
Sponsors:
P41 EB015898/EB/NIBIB NIH HHS/United States
Generated Citation:
Gregory T.S., Oshinski J., Schmidt E.J., Tse Z.T.H. ECG Electrode Placement for Magnetohydrodynamic Voltage Suppression and improving Cardiac Gating in High-field MRI. Soc. Cardiac MRI Annual Meeting, Los Angeles, CA, 2016 Jan; P328.
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The accuracy of Electrocardiogram (ECG) gating for synchronization of MR scanner image acquisition and cardiac electrical activity is of great importance for acquiring high-quality Cardiac Magnetic Resonance (CMR) images free of motion artefacts. The distortion of ECG traces by Magnetohydrodynamic Voltages (VMHD) induced by interaction between the MRI static magnetic field (B0) and rapid left-ventricular blood ejection during systole can lead to false and/or intermittent QRS complex detection and images with severe motion artefacts [1]. We hypothesized that an optimized electrode placement for the reduction of induced VMHD could be derived based on a thoracic model to increase the accuracy of QRS complex detection.