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. Author manuscript; available in PMC: 2015 Jan 1.
Published in final edited form as: J Magn Reson Imaging. 2013 Apr 4;39(1):10.1002/jmri.24130. doi: 10.1002/jmri.24130

Table 1.

Spectral quality in terms of fitted volume percentage, mean metabolite concentrations averaged over all voxels of white matter brain tissue in parietal lobe, and signal-to-noise ratio (SNR) for 3D EPSI reconstructed using full k-space, GRAPPA, and central k-space data.

Data Acquisition Fitted
Volume (%)
NAA Cre Cho SNR
Normal Full k-space 72.5+3.15 591±36.6 348±22.9 99±8.1 22.5±2.82
(Group1) Acq-GRAPPA 71.5+2.89 595±37.9 346±23.9 100±9.7 16.7±2.78
Sim-GRAPPA 72.0+2.97 592±38.2 341±25.4 97±9.1 17.0±2.14
Central k-space 65.7+2.66 588±39.0 347±26.0 98±9.9 21.5±3.11
Normal Full k-space 71.7+2.35 585±35.6 338±23.9 97±9.6 20.0±2.39
(Group2) Sim-GRAPPA 69.1+2.44 591±35.2 343±23.6 99±9.0 14.7±2.08
Central k-space 68.6+2.46 589±37.1 342±24.2 98±9.6 19.0±2.74
mTBI Full k-space 64.3+3.35 577±42.5 357±26.4 110±11.1 18.7±1.48
Sim-GRAPPA 65.5+2.63 585±39.4 360±28.1 111±11.7 15.1±1.39
Central k-space 65.6+2.36 584±39.6 359±25.7 110±11.0 18.5±1.71