Hi Doug

check out mri_cc and the help from it. I think you want -t and -d. Probably easiest to run it after recon-all.

cheers Bruce On Tue, 20 Feb 2018, Douglas Merkitch wrote:

Hey Bruce, Could you elaborate on what steps you would need to change the number of corpus callosum segments (and grow them laterally), and how to specify the outputs name/format/location?

Thanks,

Doug

Douglas Merkitch Neurological Sciences Rush University Medical Center

On Feb 19, 2018, at 11:11 AM, Bruce Fischl fischl@nmr.mgh.harvard.edu wrote:

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  Hi Ben

  we find the CC as the region where there is the largest left/right WM
  connection. We then orient it to be vertical and find principle directions,
  and divvy it up into however many segments you want (I think the default is
  5 but this can be changed). We then grow it out laterally as far as your
  specify

  cheers
  Bruce


  On Mon, 19 Feb
  2018, Benjamin Yeske wrote:

        Hello Freesurfer Experts,
        I was looking through your website to see if I could find any info/papers
        that explained what
        landmarks you use for segmenting the corpus callosum, but I couldn't find
        anything on the topic.
        Could you please point me to a paper or resource that explains how
        freesurfer captures the corpus
        callosum and what landmarks it use to segment it out? We'd like to be able
        to hand check this region
        for accuracy in our TBI patients brain scans.

        Thank you,
        Ben


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