Hi Bruce,
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