There is not a way to do this automatically as part of recon-all. You
would need to build a new gca by labeling a set of subjects then
building the gca with gcatrain.
On 7/12/2022 1:00 PM, Ramtilak Gattu wrote:
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Hello all,
We built a CC mask with 3 segments ( Genu, body and Splenium) and made
it a part of the existing ASEG.mgz in "fsaverage" folder.
Would like to incorporate this shown Corpus Callosum (CC) mask into
aseg calculations replacing the existing inbuilt CC 5 segments. What
is the best way to do it?
We replaced the original aseg.mgz in fsaverage folder with our
aseg.mgz that has whole CC with 3 segments and re-ran the recon-all
but still we got the same old results.
We even tried the mri_cc (mri_cc -aseg aseg.mgz -o aseg.auto_CCseg.mgz
sub_01) where aseg.mgz is the aseg.mgz with new CC but still we got
the same old results.
Does this new aseg.mgz should be a part of labels file in
"rb_xxx_xx.gca" ?
If so can it be done by extracting the old "rb_xxx_xx.gca" file with
mriconvert and add this aseg_CC and rebuild a new .gca file? Can
mriconvert create a gca file?
Please advice.
Thanks
Regards
Tilak
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