Try mri_segstats --seg Cluster1_R.nii.gz --id 1 --sum sum.R.dat That will give you the number of voxels that have a value=1 times the size of the voxel (so the volume). It will not be in MNI space unless the nifti files you sent are in MNI space.
On 12/21/2022 5:42 PM, Beatriz Cavendish wrote:
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Hello,
I would like to know the step by step to obtain volume (mm3) from a volumetric mask in the MNI space (follow the attached nifti file). I checked the forum but the tutorials are for surface extraction and cortical thickness.
Yours sincerely,
-- Beatriz Araújo Cavendish, MSc
PhD student | Psychologist
University of São Paulo
São Paulo/SP - Brazil
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