I still haven't found a solution for the issue of fast not working as
expected, so I'm reposting this:
I am trying to obtain a two-class tissue segmentation of the brain
matter of an image. I have a bias-corrected full image (full.nii) and
a mask for the brain portion (excluding CSF, mask.nii). So I do
fslmaths full -mas mask masked
fast -n 2 -g -N masked
I get a grey matter probability map in masked_pve_0 as expected. But
the white matter portion, masked_pve_1, is a float-type image with
only two values, 0 and 1. I would have expected masked_pve_1 to
contain intermediate values, just as masked_pve_0 does.
I would much appreciate your help.
Regards
Rolf
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Rolf A Heckemann, MD PhD
Médecin chercheur
Fondation Neurodis
CERMEP - Imagerie du Vivant
Hôpital Neurologique Pierre Wertheimer
59 Boulevard Pinel
69003 Lyon
France
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