A 14-channel local array of shim coils was used to improve B0 homogeneity and reduce artifacts in quantitative susceptibility mapping at 7T. Using the local array of shim coils in addition to the standard 2nd order spherical harmonic shims, the B0 shim quality was improved by an average of 16% across all volunteers. Local inhomogeneities were significantly reduced and could be correlated to reduced artifacts in QSM.
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