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Abstract #1269

Retrospective Electromagnetic interference mitigation in a portable low field MRI system

Sai Abitha Srinivas1, Clarissa Z Cooley1,2, Jason P Stockmann1,2, Patrick C McDaniel1,3, and Lawrence L Wald1,2,4
1Athinoula A Martinos Center for Biomedical Imaging, Charlestown, MA, United States, 2Harvard Medical School, Boston, MA, United States, 3Dept. of Electrical Engineering, Massachusetts Institute of Technology, Cambridge, MA, United States, 4Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA, United States

The performance of a low field Point of Care (POC) MRI system operating outside an RF shielded room is adversely affected by the presence of electromagnetic interference signals, which produce image artifacts, sometimes complicated enough to be confused with image noise. We demonstrate a post-processing interference suppression technique using an external reference coil and dynamically updated transfer function to detect the interference and remove it from the imaging data.

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