I am currently trying to run PVC for my adc images using the following script.

mri_gtmpvc --i /Volumes/DANIEL/dti_freesurf/dtrecon/${subj}.${cond}./adc-masked.nii.gz --reg /Volumes/DANIEL/dti_freesurf/dtrecon/${subj}.${cond}./register.lta --psf 0 --seg /Applications/freesurfer/subjects/Freesurfer_output/${subj}.${cond}.fsoutput/mri/gtmseg.mgz --default-seg-merge --auto-mask PSF .01 --mgx .25 --o /Volumes/DANIEL/dti_freesurf/dtrecon/${subj}.${cond}./adc.gtmpvc.output --no-rescale

What would I need to change in order to accurately perform PVC on FA images? Would the --mgx flag need to be changed?

Best,