Dear,
There are two terms called grid and grid spacing, which makes me confused. I found it when using adwarp command with -dxyz option. Here are the situation:
anat+tlrc: voxel size=2x2x2, grid=91x109x91
epi+orig: voxel size=3.312x3.312x3.312, grid=64x64x48
epi+tlrc: voxel size=3.312x3.312x3.312, grid=64x64x48
As far as i know, grid spacing should be the spacing between grid lines in voxels, am i right?
However, it makes no difference on the grid of epi after using -dxyz=3 in adwarp command, would you mind giving me some idea?
Yours,
Peng