but you'll need to convert the COR file you saved to brainmask.mgz if you want to recover your edits (4 hours of manual editing!).
Bruce
On Wed, 28 Jun 2006, Nick Schmansky wrote:
The brainmask.mgz file is the one that should be edited (and saved), so select that filename to save. Then just continue with autorecon2 (and it will use your brainmask.mgz). It will not overwrite your brainmask.mgz unless you specify the aptly named '-clean-bm' flag to recon-all.
On Wed, 2006-06-28 at 15:00 -0400, dasoscia@buffalo.edu wrote:
I just finished my 4 hour manual editing...went to file>save volume as...then saved it to where it defaulted me, which was the mri folder of this subject. When i pull up my brainmask, it is giving me the same one that it had before i made any changes. I hope i didnt do something wrong and lost all the edits. There is 256 COR files though now in my mri folder for this subject I noticed. Maybe these are the edited slices? Just let me know how to get my final brainmask and how to proceed with running -autorecon2 on it properly. Thanks.
Quoting Bruce Fischl fischl@nmr.mgh.harvard.edu:
it helps detect cases in which the deformation is too big (e.g. when the surface deforms all the way into the cerebellum), and can thus recover from e.g. cerebellum chopping.
On Wed, 28 Jun 2006 dasoscia@buffalo.edu wrote:
I am currently in the process of manual editing...just curious
though,
what exatly does adding an atlas do to the skullstrip process?
Quoting Nick Schmansky nicks@nmr.mgh.harvard.edu:
First have a look at the troubleshooting wiki pages at:
https://surfer.nmr.mgh.harvard.edu/fswiki/FsTutorial/TroubleshootingData
In particular, Subject 1 has a skull strip problem, and the fix
info
is here:
https://surfer.nmr.mgh.harvard.edu/fswiki/FsTutorial/SkullStripFix
I'm guessing you have seen this page since you have already attempted one type of fix (adjusting the watershed parameters). The alternative fix is the slice-by-slice manual editing.
You could also try adding the wsatlas flag:
recon-all -s (subject) -skullstrip -wsatlas
which will use an atlas to help with the skull-strip.
Does the contrast of your image look good? That is, comparing
your
orig.mgz to that of the sample subject 'bert' included with freesurfer?
Nick
On Wed, 2006-06-28 at 10:09 -0400, dasoscia@buffalo.edu wrote:
I am having trouble with one of my skull strips, and getting
very
extreme results. When I re-run the skullstrip using different
watershed
values, anything at 56% or below takes 75%+ of the brain out,
and
as
soon as I jump to 57% or higher, it leaves on almost all of the
skull,
except for maybe 5% of it. Is this indicative of a more
complicated
problem, and what is my next step (other than manually taking
off
the
skull), if any? Thanks _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
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