Hello, I'm learning to use freesurfer. I would understand if the tissue that is not brain (i.e. meninges, vessel and skull), which is not automatically included in pial, must be deleted with the manual editing or not. I send you some screenshots as exemple. In this cases, I can ignore skull and vessel out of the pial surface or I have to delete them? In this page ( http://freesurfer.net/fswiki/Edits ) they wrote : "Skull, dura and blood vessels might interfere with surface formation and need to be erased". Elsewhere they wrote that, in manual editing, leaving meninges it's not a skull strip error. In the manual editing of the brainmask.mgz, I obtain different values of volumes (in the aseg.stats) if I delete skull, meninges and vessel or not. thank you, Irene
