[Freesurfer] Extract the cortical thickness

Dear FreeSurfer expert

I wonder that whether I can use the command aparc2statstable to get the cortical thickness or is it better to get the cortical thickness of a volume defined ROI or is there the easy way to get the most accurate cortical thickness from ROI

I am following the pipeline "VolumeRoiCorticalThickness" but I do not understand how I can get ROI mask called ROI5.nii and TT_avg152T1.nii.

Sorry if this question is too obvious for me to overlook something. Any help is appreciated since I am newbie on FreeSurfer. Best regards, *--v-- Peace --v--* *Duy Nguyễn * *Biomedical Engineering Department- IU HCMC* *Cell: (+84)909999056* *Email: duy.nguyenbme@gmail.com duy.nguyenbme@gmail.com*