It only applies to the volume calculation. You can use mri_gtmpvc (search for PETsurfer -- applies to more than PET)

On 11/16/2022 11:00 PM, Julie Ottoy wrote:

External Email - Use Caution

Hello FS team,

If I want to calculate the average diffusion-weighted signal from a DWI image within WM regions using mri_segstats, would it be beneficial to use the --pv flag for "partial volume correction" , or would this only have an influence on the Volume calculation?

mri_segstats --seg ${whitemattermask} --i ${DTI_image} --sum ${whitematter_stats} --excludeid 0 or norm=${subject}/mri/norm.mgz mri_segstats --seg ${whitemattermask} --i ${DTI_image} --sum ${whitematter_stats} --pv ${norm} --excludeid 0 Thanks, Julie

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