Hi Chris

It sounds like a topological defect, but hard to say without seeing it. Can you post some images? Or follow Doug’s instructions about visualizing the defects and see if there is one in the sulcus you mention below?

Cheers

Bruce

From: freesurfer-bounces@nmr.mgh.harvard.edu <freesurfer-bounces@nmr.mgh.harvard.edu> On Behalf Of Chris Adamson
Sent: Wednesday, March 15, 2023 12:42 AM
To: freesurfer@nmr.mgh.harvard.edu
Subject: [Freesurfer] WM edits, prevent surface from cutting sulcus

        External Email - Use Caution        

Freesurfer experts,

I have a subject where the WM surface is cutting across a sulcus despite the WM segmentation correctly labelling the GM. Is there a way of putting a “barrier” value in the wm.mgz to prevent the white matter surface from cutting across the sulcus?

Thank you.

Chris.

Dr Chris Adamson  
Research Officer, Developmental Imaging, Murdoch Childrens Research Institute 
Murdoch Childrens Research Institute 
Royal Children’s Hospital
Flemington Road, Parkville, Victoria  3052, Australia
MailScanner has detected a possible fraud attempt from "secure-web.cisco.com" claiming to be www.mcri.edu.au

E   chris.adamson@mcri.edu.au
T   03 9936 6780

This e-mail and any attachments to it (the "Communication") are, unless otherwise stated, confidential, may contain copyright material and is for the use only of the intended recipient. If you receive the Communication in error, please notify the sender immediately by return e-mail, delete the Communication and the return e-mail, and do not read, copy, retransmit or otherwise deal with it. Any views expressed in the Communication are those of the individual sender only, unless expressly stated to be those of Murdoch Children’s Research Institute (MCRI) ABN 21 006 566 972 or any of its related entities. MCRI does not accept liability in connection with the integrity of or errors in the Communication, computer virus, data corruption, interference or delay arising from or in respect of the Communication.