I think if you convert the afni's skull stripping to .mgz format and put it in mri/brainmask.mgz we will recognize that it is different from brainmask.auto.mgz and use it instead

cheers
Bruce
On Wed, 12 Jul 2017, Michelle VanTieghem wrote:

Hi, I am just following up on my previous question.

The -gcut does not appear to make any difference on our skull stripping. I
also saw that you can change flags for watershed option. Do you recommend
this? If so, how would you implement this on freesurfer output that was
already run? 

We achieve fairly good skull stripping with this dataset using afni's
skullstrip function. Would it be possible to enter the already-skull
stripped data into freesurfer? if so, how would you set this up? Right now,
I am entering the original dicom files as input to freesurfer -- is it
possible to use other file formats as input? 

Thanks!

On Tue, Jul 4, 2017 at 12:43 PM, Michelle VanTieghem
<michelle.vantieg...@gmail.com> wrote:
      Hello, 
I am just following up on this question.

Thanks!
Michelle

On Tue, Jun 27, 2017 at 4:46 PM, Michelle VanTieghem
<michelle.vantieg...@gmail.com> wrote:
      Hi Bruce, 
The -gcut does not appear to make any difference on our skull
stripping. I also saw that you can change flags for watershed
option. Do you recommend this? If so, how would you implement
this on freesurfer output that was already run? 

We achieve fairly good skull stripping with this dataset using
afni's skullstrip function. Would it be possible to enter the
already-skull stripped data into freesurfer? if so, how would
you set this up? Right now, I am entering the original dicom
files as input to freesurfer -- is it possible to use other file
formats as input? 

Thanks!
Michelle 

On Mon, Jun 12, 2017 at 4:49 PM, Bruce Fischl
<fis...@nmr.mgh.harvard.edu> wrote:
      -gcut should do the trick

      cheers
      Bruce
      On Mon, 12 Jun 2017, Michelle VanTieghem wrote:

            Hi, 
            Thanks for your response. Maybe I am
            missing something, but I haven't been
            able to find any documentation about how
            to use graph cuts skull stripping
            in the freesurfer pipeline. can you
            please advise?

            Thanks,
            Michelle

            On Mon, Jun 12, 2017 at 2:48 PM, Bruce
            Fischl <fis...@nmr.mgh.harvard.edu>
            wrote:
                  Hi Michelle

                  you can try using the graph cuts
            skull stripping. It is more
                  aggressive and more likely to
            remove more skull/dura (and also
                  to remove some brain)

                  cheers
                  Bruce
                  On Mon, 12 Jun 2017, Michelle
            VanTieghem wrote:

                        Hello, 
                        We have assessed freesurfer
            output for 160+ brains,
                        and about 50% have poor
                        segmentation of pial matter
            that includes too much
                        skull.  Manual edits and
                        re-running does work to
            improve the problem, but is
                        very time/labor
                        intensive for so many scans.

                        I saw on the freesurfer wiki
            that you can include T2
                        or Flair images to
                        improve the segmentation for
            this problem. However,
                        we do not have these
                        extra scans. What do you
            recommend to do otherwise? 

                        Thank you!


                        --
                        Michelle VanTieghem
                        PhD student in Psychology
                        Developmental Affective
            Neuroscience Lab
                        Columbia University 
                        mrv2...@columbia.edu


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            --
            Michelle VanTieghem
            PhD student in Psychology
            Developmental Affective Neuroscience Lab
            Columbia University 
            mrv2...@columbia.edu


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The information in this e-mail is intended only for the
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contains patient information, please contact the Partners
Compliance HelpLine at
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sent to you in error
but does not contain patient information, please contact
the sender and properly
dispose of the e-mail.




--
Michelle VanTieghem
PhD student in Psychology
Developmental Affective Neuroscience Lab
Columbia University 
mrv2...@columbia.edu




--
Michelle VanTieghem
PhD student in Psychology
Developmental Affective Neuroscience Lab
Columbia University 
mrv2...@columbia.edu




--
Michelle VanTieghem
PhD student in Psychology
Developmental Affective Neuroscience Lab
Columbia University 
mrv2...@columbia.edu

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