[Freesurfer] Edit the number of segments in the segmentation of the corpus callosum

Hi,

This a a "re-posting" of a question I've raised last week ; )

I would like to segment the corpus callosum into *twelve* even lenght segments instead of the five segments that freesurfer includes by default.

- First I ran a mri_cc on subject e0070:

mri_cc -aseg aseg.auto_noCCseg.mgz -o aseg.12segmentsCC.mgz -d 12 e0070

- Then I edited the ColorLUT.txt file and renamed it CColorLUT.txt (see attachment, segments 251 to 262).

- Finally I ran a mri_segstats to compute the statistics on segmented volumes.

mri_segstats seg $SUBJECTS_DIR/e0070/mri/aseg.12segmentsCC.mgz --ctab $SUBJECTS_DIR/CColorLUT.txt --nonempty --excludeid 0 sum --e0070_CC12.aseg.stats

The e0070_CC12.aseg.stats file still displays only five segments of the corpus callosum.

Any tips or clues on how I could do things differently to get 12 segments?

Thanks in advance,

Geneviève