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We 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.
Ianniello et al. (Wed,) studied this question.