Hello Freesurfers,
  I would like to use the muscle ROI in the LUT (number 123).  Can anyone
tell me which muscles (all cranial? cervical too?) are included?  I
tried making a subject-specific label using the following command:      
  mri_cor2label --c
/cluster/ablood/1/${experimental_directory}/${recons_directory}/${identifier}_recon/mri/aseg.mgz
--id 123 --l
/cluster/ablood/1/${experimental_directory}/${recons_directory}/${identifier}_recon/label/muscle_${identifier}.label

This yielded the error "Found 0 label voxels", presumably because aseg.mgz
is skull-stripped.  When I used orig.mgz instead of aseg.mgz in the
command line above, the assigned label is a scattering of single voxels
throughout the cortex and subcortical white matter.  I am guessing that
this is because orig.mgz is not registered to the same space as aseg.mgz -
is this correct?

Any suggestions for how to use the muscle ROI would be much appreciated.

  Thanks,
   Jeff
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