I have a LUT, a gca file for subcortical segmentation and two gcs files for parcellation available. How can I get SUVRs for both the cortical and subcortical structures?

I  tried using xcerebralseg to create a individual segmentation to replace the apas+head.mgz but when I'm using gtmseg I only managed it to get results for the cortical parcellation using a annot created from the two gcs files (--ctx-annot atlas --ctab LUT). Can someone help me with this?

Best,

Boris