Hi Freesurfers,

I'm currently doing my bachelors thesis in medical engineering and I'm trying to measure the cortical thickness of scans acquired by a 7T MRT.

A colleague of mine has used Freesurfer (v4.0.5) before and mentioned that high resolution scans with a voxel size smaller than 1x1x1mm (like .7x.7x.7mm) are converted to 1x1x1mm during a processing stage of autorecon - I think during the mri_convert process.

Is it possible to keep the native size or does Freesurfer need to change the voxel size to 1mm in order to do the segmentation correctly?

Regards, Falk