发明名称 |
SYSTEMS AND METHODS FOR ESTIMATING AND REMOVING MAGNETIC RESONANCE IMAGING GRADIENT FIELD-INDUCED VOLTAGES FROM ELECTROPHYSIOLOGY SIGNALS |
摘要 |
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 ("EEG") system, an electromyography ("EMG") system, a voltage device tracking ("VDT") 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. |
申请公布号 |
WO2016007816(A1) |
申请公布日期 |
2016.01.14 |
申请号 |
WO2015US39874 |
申请日期 |
2015.07.10 |
申请人 |
BRIGHAM AND WOMEN'S HOSPITAL, INC.;UNIVERSITY OF GEORGIA RESEARCH FOUNDATION, INC. |
发明人 |
WANG, WEI;ZHANG, HUALEI;SCHMIDT, EHUD, J.;TSE, TSZ, HO |
分类号 |
G01R33/565 |
主分类号 |
G01R33/565 |
代理机构 |
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地址 |
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