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. Author manuscript; available in PMC: 2019 Jul 31.
Published in final edited form as: Neuroimage. 2019 Jan 25;189:601–614. doi: 10.1016/j.neuroimage.2019.01.054

Fig. 6.

Fig. 6

Visualization of the spatial distribution of tSNR averaged across subjects using the FreeSurfer CVS avg35 atlas space, shown on the inflated surface representation. (a) Normalized tSNR of the non-smoothed 3.0-mm isotropic resolution data and the 1.1-mm isotropic resolution data after smoothing with surface-based kernel IC-mid 03–07 NB=4. Regional differences in the tSNR maps are seen, however the tSNR of the smoothed 1.1 mm isotropic data is higher than the unsmoothed 3.0-mm isotropic data in nearly every region of the cortical hemispheres. (b) tSNR gain maps showing the tSNR increase, the ratio of 1.1-mm isotropic resolution data smoothed using the kernel from panel (a) by the same non-smoothed 1.1-mm data. For this example acquisition and this example kernel, some brain regions naturally benefit more from smoothing than others.