[Freesurfer] mri_surfcluster for cortical volume comparisons

Dear freesurfers,

I would like to obtain the cluster size (in mm3) and coordinates of the maxima of a cortical volume comparison using mri_surfcluster.

mri_surfcluster --in $PATH/control_cronic_dones_right_volume/rh-Diff-control-cronic-Intercept-volume/sig.mgh --hemi rh --subject fsaverage --thmin 2 --thmax 7 --sign pos --surf pial --no-adjust --o ./concro --ocn ./cluster_number --olab ./grouplabel_concro --sd $SUBJ_DIR --sum ./concro_sum

Would it be correct.

Regarding the results that I obtain, I have some questions:

- Which surface do I have to load? pial, orig? - In the summary file, the cluster size is given in mm2, is it possible to obtain it in mm3 (I am analysing cortical volume)?

Thank you for your help, Yolanda