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Rapid Flow Monitoring Based Magnetohydrodynamic Voltages: Case Studies in Carotidal and Aortic Flow

Institution:
1Department of Engineering, The University of Georgia, Athens, GA, USA.
2Department of Radiology, Brigham and Women’s Hospital, Boston, MA, USA.
3Department of Radiology, Emory University Hospital, Atlanta, GA, USA.
Publication Date:
Jan-2016
Citation:
Soc. Cardiac MRI Annual Meeting, Los Angeles, CA, 2016 Jan;
Appears in Collections:
Cardiac MRI Annual Meeting
Sponsors:
P41 EB015898/EB/NIBIB NIH HHS/United States
AHA 10SDG261039
R03 EB013873/EB/NIBIB NIH HHS/United States
Generated Citation:
Wu K., Gregory T.S., Schmidt E.J., Oshinski J., Tse Z.T.H. Rapid Flow Monitoring Based Magnetohydrodynamic Voltages: Case Studies in Carotidal and Aortic Flow. Soc. Cardiac MRI Annual Meeting, Los Angeles, CA, 2016 Jan;
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Advanced physiological monitoring within the bore of the MRI scanner is a technical challenge addressed through varying approaches, attempting to provide accurate patient monitoring during conventional MRI procedures and clinical interventions [1]. The Electrocardiogram (ECG) is a clinical diagnostic tool in MRI, commonly utilized to monitor high-risk patients, and in cardiac MRI synchronization to obtain images free of motion-based artifacts, despite complications that arise in acquiring high-fidelity intra-MRI ECG recordings [2]. Limitations in acquiring diagnostic quality ECGs inside the MRI are often attributed to Magnetohydrodynamic (MHD) voltages (VMHD), induced due to systolic blood flow interactions with an external magnetic field [3]. We hypothesized that VMHD extracted from varying flow source, can be used as a rapid tool for regional flow volume monitoring [1,4]. This methodology could be utilized in a stand-alone device with a portable magnetic field source, capable of real-time beat-to-beat flow estimation [5].