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Abstract #4030

In vivo human imaging on a 47.5mT open MRI system with active Electromagnetic Interference (EMI) mitigation using an electrode

Sai Abitha Srinivas1,2, Stephen Cauley3,4, Jason P Stockmann3,4, Charlotte R Sappo1,2, Christopher E Vaughn1,2, Lawrence L Wald3,4,5, William A Grissom1,2,6,7, and Clarissa Zimmermann Cooley3,4
1Vanderbilt University Institute of imaging science, Nashville, TN, United States, 2Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, United States, 3Harvard Medical School, Boston, MA, United States, 4Dept. of Radiology, Massachusetts General Hospital, Athinoula A Martinos Center for Biomedical Imaging, Boston, MA, United States, 5Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA, United States, 6Department of Electrical Engineering, Vanderbilt University, Nashville, TN, United States, 7Department of Radiology, Vanderbilt University, Nashville, TN, United States

Low-field MRI scanners can operate outside MR safe rooms, but their image quality is adversely affected due to the presence of electromagnetic interference signals which can severely obscure the images. We demonstrate a generalized dynamic model that can handle time-varying external interference sources by using simultaneously acquired data from multiple EMI detectors - specifically from an electrode, traditional RF pick up coils and the primary MR coil - in-vivo, in real world EMI settings on a 47.5mT permanent magnet open MRI system.

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