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. Author manuscript; available in PMC: 2018 Jul 15.
Published in final edited form as: Anal Biochem. 2016 Jun 9;529:17–29. doi: 10.1016/j.ab.2016.06.003

FIGURE 9. STATIC SH WHOLE BRAIN SHIMMING.

FIGURE 9

Whole-brain B0 homogenization as a function of SH shim order (here: 4 Tesla). SH shimming is capable of removing a large part of the B0 imperfections observed in the human brain. The inclusion of higher orders allows progressively better results and a nearly perfect elimination of the widespread, shallow terms. The localized B0 terms observed in the temporal lobes and the prefrontal cortex are beyond the modeling capability of available SH shimming and can only be reduced, but not removed.