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. Author manuscript; available in PMC: 2018 Oct 1.
Published in final edited form as: Neuroimage. 2017 Jul 14;159:32–45. doi: 10.1016/j.neuroimage.2017.07.021

Fig. 2.

Fig. 2

Vendor-mean GABA-edited DIFF spectra acquired by (A) GABA+ editing and (B) MM-suppressed GABA editing. The grey patches represent ± 1 SD. The associated sample sizes are shown in parentheses. Each individual DIFF spectrum was normalized to the amplitude of an unsuppressed water signal prior to averaging. The larger SD of the residual water signal (4.68 ppm) is in part a result of inconsistent water suppression (both between individual acquisitions and shot-to-shot) during the MEGA-PRESS experiment. The use of MOIST water suppression by some Philips sites also contributed to the larger SD in the mean Philips spectra.