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The feasibility of simultaneous QSM and MRSI has been recently demonstrated using SPICE. But the resolution of QSM obtained by SPICE at 7T is limited to only 3 mm due to bandwidth requirements. To overcome the resolution limitation, this work proposes a fast acquisition sequence for high-resolution encoding, and a model-based method to reconstruct from sparse sampling. As a result, submillimeter QSM can be achieved within only 1 minute, which enables simultaneous QSM (at 0.8 mm) and MRSI (at 3.0 mm) in an 8-minute scan at 7T.
Guo et al. (Wed,) studied this question.