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Abstract #4430

A 16-channel MC and RF hybrid system for B0 shimming and B1 reception: a preliminary prototype

Carlotta Ianniello1, Sebastian Theilenberg1, Jonah Majumder1, John Thomas Vaughan1,2,3, and Christoph Juchem1,2
1Department of Biomedical Engineering, Columbia University in the City of New York, New York, NY, United States, 2Department of Radiology, Columbia University Medical Center, New York, NY, United States, 3Columbia Magnetic Resonance Research Center, Columbia University in the City of New York, New York, NY, United States

Synopsis

Keywords: Hybrid & Novel Systems Technology, RF Arrays & Systems, RF Rx array, AC/DC coil, Hybrid RF and shimmingWe explore the potential of a hybrid approach in which RF receive elements are driven with direct current for B0 shimming (RF+MC) aided with multicoil shim-only elements (MC-only) to overcome the challenging B0 inhomogeneities in the frontal brain. A proof-of-concept implementation consisting of 16 RF+MC elements and 18 MC-only elements is presented. Simulations have shown minimal SNR loss despite the proximity of MC-only elements. Furthermore, the B0 shimming performance of this preliminary setup outperformed 3rd and 5th order SH shimming despite its rudimentary design. Future work will focus on optimizing the B0 performance while minimizing the MC-to-RF coupling.

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