Hi Jon Clucas,
Thank you so much for replying and for your guidance.
Actually, I want to calculate the gray matter volume and cortical thickness of the ROIs defined by some atlases, like Craddock400, rather than the DKT atlas used by Freesurfer for the parcellation and processing of the anatomical images, because the preprocessed ABIDE data has already provided the mean time series of the ROIs of the Craddock400 atlas using C-PAC. Is it possible by C-PAC (or other software or codes) and how?