The Brigham and Women's Hospital, Inc.

University of Georgia Research Foundation Inc

HuaLei Zhang

Ehud J Schmidt

Tsz Ho Tse

Wei Wang

Systems and methods for estimating time-dependent voltages that are induced in electrophysiological monitoring systems by magnetic field gradients generated during a magnetic resonance imaging ('MRI') scan are provided. The gradient-induced voltages are subsequently removed from signals acquired with the electrophysiological monitoring system during an MRI scan. As an example, the electrophysiological monitoring system can include an electrocardiography ('ECG') system, an electroencephalography (&#x201c;EEG&#x201d;) system, an electromyography (&#x201c;EMG&#x201d;) system, a voltage device tracking (&#x201c;VDT&#x201d;) system, and so on. The gradient-induced voltages are estimated using a two-step procedure in which a learning algorithm is used to determine fitting parameters to be used in a model of the gradient-induced voltages. The fitting parameters are then used together with the model to extract the gradient-induced voltages from signals acquired during an MRI scan. The gradient-induced voltages can then be removed from the acquired signals.

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Brookline, MA, United States of America

HuaLei Zhang