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Hi Douglas,

Thank you for your reply. I mean that the voxels do not change the color value 255. Is like nothing is happening to them.

What do you mean by if the surfaces are not following the gray white boundary. It is not used for anything else? If this is the case, should I discard this subject?

Kind regards, Rosie

On Fri, Jan 28, 2022 at 12:44 AM Douglas N. Greve dgreve@mgh.harvard.edu wrote:

If it works for others, then I don't know what could be going wrong. Also, it is unclear what you mean by not being able to edit it (permission? voxels don't change). Also note that you only need to change the wm.mgz if the surfaces are not following the gray white boundary. It is not used for anything else.

On 1/27/2022 8:41 AM, Rosalia Dacosta Aguayo wrote:

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Dear Freesurfer team,

I am quality-checking the segmentation work from FreeSurfer version 7.1 and I have a subject whose white matter mask I cannot edit. I wonder why is this happening?

The white matter mask has a lot of holes and the brush does not work over them. I know the brush is working because I have been editing other white matter masks but this subject is different.

Any help would be appreciated

My best regards, Rosie

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