Dear FreeSurfer Experts,<br><div>I&#39;m so new to the FreeSurfer. I have seen the <span style="font-family:Roboto;font-size:16px;background-color:rgb(253,253,253)">CSF segmentation which is inside the ventricles in aseg.mgz  but i couldn&#39;t see the peripheral CSF (the csf outside of cortex). I&#39;m wondering how can i have it or probably its label?  </span></div><div><span style="font-family:Roboto;font-size:16px;background-color:rgb(253,253,253)">Thank you! </span></div>