try mri_convert --downsample 3 input.mgz downsampled.mgz

On 9/12/2022 12:54 PM, Marina Fernández wrote:

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Dear experts,

I would like to downsample the GM mask, which is at 1mm isotropic voxel size (freesurfer subject space), at 3mm isotropic. What is the most efficient way to do it with freesurfer?

Thank you in advance. Marina

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