[Freesurfer] Question about calculating hausdorff distance

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Hello experts,

I am trying to calculate Hausdorff distance between two mri volumes for cortical and subcortical structures across several subjects. I found a way to calculate hausdorff distance for mri volumes using mri_hausdorff_dist but it only seems to work if I specify one target label at a time.

My question is, so to calculate average hausdorff distance between two mri volumes across several subjects should I first calculate hausdoff distance between two mri volumes for each segmentation label for each subject and then calculate the mean hausdorff distance for each segmentation label across subjects?

Best, Julia Shin