mris_expand may do what you want.

You can use it to shrink or expand the points on a surface by a fixed percentage or a fixed distance.

Regards,

Don

Don Krieger, Ph.D.

Department of Neurological Surgery

University of Pittsburgh

(412)648-9654 Office

(412)521-4431 Cell/Text

From: freesurfer-bounces@nmr.mgh.harvard.edu [mailto:freesurfer-bounces@nmr.mgh.harvard.edu] On Behalf Of Andrea Horváth
Sent: Tuesday, September 09, 2014 7:08 AM
To: freesurfer@nmr.mgh.harvard.edu
Subject: [Freesurfer] how to shrink wm surface

Dear Freesurfers,

After running recon-all, the wm surfaces are too close to the pial surface, some gray matter is segmented as white matter as seen in the attached picture (red cross: a bigger cortical part is included in the white matter).

How can I shrink the wm surface?

Thank you for your help!

Andrea