Hi Bruce,

When I have a look in the recon-all script I see that it is tested if  
there
are voxels present in wm.mgz with value 1 or 255. Both indicate
wm editing. The comment in recon-all says that 1 means remove
and 255 means add.
And concerning my second question: are these edited voxels
correcly processed with the option autorecon2-wm and subsequently
with longitudinal processing?

Cheers,
ed

On 4 Feb 2014, at 14:27, Bruce Fischl wrote:

Hi Ed,

yes, although we reserve the values under 5 I think for editing  
changes,
I believe we only use 1 at the moment.

cheers
Bruce
On Tue, 4 Feb 2014, Ed Gronenschild
wrote:

Hi,

From what I can read in the wiki about wm editing, I understand
that edited wm voxels have values of either 255 (added) or
1 (removed) and no other values. These are stored in the file
wm.mgz. Is that correct?
Before processing a lot of data I want to be sure that running
recon-all with the option autorecon2-wm will recognize these
voxels, also during longitudinal processing. Can you confirm
this.

FreeSurfer v5.3.0 Mac OSX10.6

Kind regards,
Ed

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