External Email - Use Caution Dear Freesurfer experts, I would like to know if this procedure is correct. I have cortical thickness data from aparc+aseg for every ROI in DTK atlas (i.e. output of recon-all). I need average cortical thickness in frontal, parietal, temporal, cingulate and occipital lobes. Is it correct to average thickness measurement of every sub lobe roi (e.g. average thickness in frontal lobe = average of:
- Superior Frontal - Rostral and Caudal Middle Frontal - Pars Opercularis, Pars Triangularis, and Pars Orbitalis - Lateral and Medial Orbitofrontal - Precentral - Paracentral - Frontal Pole and so on for other lobes... Do we need to correct for the number of vertices in every region when we measure the lobar average thickness? Alternatively, do I need to run these commands to generate lobes then measure thickness in every lobe? # mri_annotation2label --subject subject --hemi lh --lobesStrict lobes # mri_annotation2label --subject subject --hemi rh --lobesStrict lobes # mri_aparc2aseg --s subject --labelwm --hypo-as-wm --rip-unknown \ # --volmask --o wmparc.lobes.mgz --ctxseg aparc+aseg.mgz \ # --annot lobes --base-offset 200 [--base-offset must be last arg] Thank you James
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