Thank you very much for your quick reply. Sorry I hadn't been able to reply faster as I was trying to figure out the below mentioned issue from two days.

 I have computed surface area of left-hippocampus using the commands mri_tessellate and mris_info. However I found that in freeview by selecting Tools->show label stats, I am able to display area of any label (PFA a screenshot) but these area stats do not match with the areas obtained using mri_tessellate and mris_info. I have two queries regarding this:

1) Surface areas of labels displayed in freeview doesn't match with subcortical structures' areas obtained by running mri_tesselate and mris_info. For example the attached screenshot shows that area of left-hippocampus is 71 mm^2 where as mri_tessellate followed by mris_info found the area for left-hippocampus to be 3586 (PFA the output of mris_tessellate and mris_info). Why is there a mismatch?

2) Based on your reply I thought area stats are not calculated for subcortical structures during "recon-all". If that is the case, how is freeview displaying area stats for subcortical areas? Also which file does freeview use to display these stats? Is it stats/[l/r]h.aparc.stats? I ask because even cortical structures' areas displayed by freeview are not matching with what is stored in these files.

Please let me know. Thank you.

Regards,

Anirudh