can you explain a bit more about what you are trying to do? If you
extracted ROIs into label files it is just a list of coordinates, although
probably not voxel indices. This page (thanks Doug!) explains our various
coordinate systems and how to go from one to another:

http://freesurfer.net/fswiki/CoordinateSystems

cheers
Bruce


On Sun, 30 Dec 2018, Sadia Sheikh wrote:

>
>         External Email - Use Caution        
>
> Dear Freesurfer experts
> I am using freesurfer version 6.0. I have extracted ROI's from the aseg.mgz file. Now is it possible
> to get the cordinates of each voxel for a particular ROI?
>
> Thanks in advance
> Regards
> Research student
>
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