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Dear Douglas,



Thank you very much for the help. We could solve the problem with that
subject but now we have a similar problem with another subject. In the
previous case, we have only one problematic voxel in the skull, but now the
label 75 (it shouldn't exist either) is taking a lot of voxels in the
ventricles and the caudate. So, I think that we should use other solution
to fix it.



I know that this issue is weird. We use gtmseg command with more or less
500 subjects and we only have this type of problem with two subjects.



Best regards,

Marina.



 > Probably the easiest thing is just to edit that voxel  to be one of the
neighboring

 > segments. First, load the aseg and find that voxel. See which segment(s)
are around

 > that voxel and get the segmentation id. Then run
 > mri_binarize --replaceonly 229 YourNewSegID --i aparc+aseg.mgz --o

 > aparc+aseg.mgz

 >  then re-run gtmseg
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