Hi,
I tried to use the following command to create a spherical mask:
fslmaths point_56_n28_52.nii.gz -kernel sphere 10 -fmean -bin sphere_r10
(point_56_n28_52.nii.gz is a single voxel located in the MNI coordinate 56/-28/52, center of the sphere)
When the radius was 6, 8, or 10, it worked well. But when the radius was 12 or 15, it looked weird:
http://imgur.com/a/O6PGs
Does anyone know why?
Mike
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