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. Author manuscript; available in PMC: 2016 Jan 16.
Published in final edited form as: Magn Reson Med. 2014 Dec 17;74(6):1523–1529. doi: 10.1002/mrm.25549

Table 2.

Metrics of Data Quality for GABA+ and MM-Suppressed GABA Measurements in Both Voxel Locations

GABA+ MM-suppressed
GABA
OCC
  Cr resonance FWHM (Hz) 8.9 ± 0.6 9.2 ± 0.7
  GABA resonance FWHM (Hz) 18.5 ± 0.9 16.7 ± 1.7
  Cr fit error (%) 10.0 ± 1.4 8.2 ± 1.7
  GABA fit error (%) 4.7 ± 0.7 6.6 ± 2.3
  Absolute frequency drift (Hz) 6.4 ± 5.8 3.6 ± 3.7
SM
  Cr resonance FWHM (Hz) 9.2 ± 3.0 9.8 ± 3.0
  GABA resonance FWHM (Hz) 18.9 ± 5.4 15.8 ± 2.3
  Cr fit error (%) 15.4 ± 8.7 13.1 ± 5.1
  GABA fit error (%) 7.0 ± 1.2 10.3 ± 5.4
  Absolute frequency drift (Hz) 6.8 ± 5.3 4.2 ± 3.9

Fit error is the standard deviation of the residuals normalized by the height of the resonance.