Yes, you can use mris_apply_reg to map the label/annotation back to the individual, then mri_label2vol to map it into the DTI space, then use mri_segstats to extract the mean value from the ROI

On 2/1/2021 1:15 PM, Sara Lyn wrote:

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Hi Freesurfer developers,

I wanted to know if I could use an ROI obtained from cortical thickness group analysis to obtain FA values from that same ROI for each of the subjects. Appreciate any guidance, thank you.

Sincerely, Sara

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