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. 2010 Jan 1;49(1):327–336. doi: 10.1016/j.neuroimage.2009.08.010

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© 2010 Elsevier Inc.

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Fig. 4 — Local improvement of the estimated BS and the sensitivity to a breath-holding experiment with BS-based shimming. (a) Percent increase of the BOLD sensitivity in gray matter areas estimated from the field maps using the BS-based shimming compared to the FH-based shimming. (b) Statistical maps displaying gray matter areas that show significantly higher activation using the BS-based shimming compared to the FH-based shimming. The maps are displayed over the T₁-weighted MDEFT image of each subject (#1–#4) and overlaid with the corresponding ROI (red) and WSA (green).