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Purpose
Gradient‐echo echo‐planar imaging (EPI), which is typically used for blood oxygenation level‐dependent (BOLD) functional MRI (fMRI), suffers from distortions and signal loss caused by localized B0 inhomogeneities. Such artifacts cannot be effectively corrected for with the low‐order spherical harmonic (SH) shim coils available on most scanners. The integrated parallel reception, excitation,...
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