Abstract #0749

Freeing MRI from its Faraday cage with Interference Rejection

Hadrien Dyvorne¹, Todd Rearick¹, Michael Poole¹, Carole Lazarus¹, Pierre Weiss², Laura Sacolick¹, Jeremy Jordan¹, Cedric Hugon¹, William Mileski¹, Gang Chen¹, Rafael O'Halloran¹, Chris McNulty¹, Jonathan Lowthert¹, Anne Nelson¹, Aristito Lorenzo¹, Nicholas Zwart¹, Prantik Kundu¹, Scott Martin¹, Andrei Loutchouk¹, E. Brian Welch¹, Samantha By¹, Bradley Cahn³, Matthew Yuen³, Mercy Mazurek³, Anjali Pranhat³, Matthew Rosen⁴, Kevin Sheth³, and Jonathan Rothberg¹

¹Hyperfine, Guilford, CT, United States, ²ITAV, CNRS, Toulouse, France, ³Neurology, Yale University School of Medicine, New Haven, CT, United States, ⁴Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, United States

We introduce methods and hardware for rejection of high levels of interference from MR data, allowing the acquisition of MR imaging scans outside the shielded room and with no disruption to patient care. Interference cancellation relies on deriving a transfer function between “primary” sensors that detect MR signal and interference, and “reference” sensors that detect interference only. Interference rejection up to 67 dB is demonstrated, along with imaging results from scans acquired at the patient bedside in a Neuro ICU.

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