Dear FreeSurfer Support Team,

I am using FreeSurfer version 7.4.1 and recently ran SAMSEG on a subject’s MRI data. However, I noticed that the corpus callosum does not appear as a distinct label in the segmented structures. After reviewing the output files and label definitions, I was unable to find any explicit segmentation for the corpus callosum in the SAMSEG results.

Could you please clarify if the corpus callosum is included as a distinct structure in the default SAMSEG atlas? If not, is there a recommended approach to extract or segment the corpus callosum using SAMSEG?

Nima Taghizadeh