On B₁ inhomogeneity correction of in vivo human brain glutamate chemical exchange saturation transfer contrast at 7T

The effects of radio frequency field (B(1)) inhomogeneity on measured in vivo human brain glutamate chemical exchange saturation transfer contrast maps are normally confounded with contributions from chemical exchange saturation transfer, direct saturation and magnetization transfer effects. Consequently, the chemical exchange saturation transfer effect variation with B(1) follows a complicated function and depends on the tissue types as well....