Hi,
 
I have a question regarding how to convert a cortical thickness map (i.e. lh.thickness) to a NIFTY file.
 
I have a subject called 'subjid' and I run recon-all on it. So I got the ?h.thickness files. Does freesurfer
provide a tool to convert the surface file to a nifty file?
 
I tried using the command 'mri_surf2vol' as follows:
mri_surf2vol  --surfval lh.thickness  --hemi lh  --template orig.mgz  --volregidentity subjid    \
--outvol /path/to/lh.thickness.nii
 
The thickness values of the output lh.thickness.nii are integers between 1 and 3. But the original
thickness values are between 0~5 and not all of them are integers.
 
Could someone know what's wrong or suggest another tool?
 
Thanks in advance.
 
Best,
 
Xiaojing