Register your average subject to each individual with mri_coreg (see below) using --s subject --dof 12, then use mri_label2vol with --seg ROI.nii.gz  to map the ROI into the individual space. If the ROI is surface-based, then you could recon-all your average, map the ROI to the surface with mri_vol2surf, then to the individual subject with mri_surf2surf

ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/mri_coreg

On 5/11/16 9:40 AM, Patrick Beukema wrote:
The average subject is the average of my own subjects (18). I registered each individual subject's functional data to the average subject with spm_register.


On Tue, May 10, 2016 at 5:43 PM, Douglas N Greve <greve@nmr.mgh.harvard.edu> wrote:
What is the average subject? How did you compute the registration
between the average subject volume and the individual?

On 05/10/2016 01:37 PM, Patrick Beukema wrote:
> Hi,
> I am trying to register a volumetric roi from an average subject that
> I created to each individual subject's functional space. I have the
> transformation matrices that I applied to the functional data to bring
> them into the average space. When I apply the inverse of those
> transforms to the roi, the results are way off so I think I must be
> missing something.
>
> 1. I created a volume from a label with mri_label2vol.
> 2. I map the volume in the average space to the native functional
> space with mri_vol2vol.
>
> I take it this is not correct and would appreciate any guidance.
> Thank you,
> pb
>
>
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Douglas N. Greve, Ph.D.
MGH-NMR Center
greve@nmr.mgh.harvard.edu
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