External Email - Use Caution What form are your labels in? If in freesurfer .label format, then you can convert them to an annotation (mris_label2annot), then use annot2std to create an average annotation in fsaverage (standard) space using your subject, you can then map the annot to any subject

On 4/20/2023 12:29 PM, Carlos Alcocer wrote:

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I am basically looking for a way to create an average of the labels for the L  subcallosal cingulate cortex (SCC) and then make an average of the labels for the R SCC across all subjects  and use these 2 average labels as a mask to see if the average label L SCC and average label of R SCC aligns well with with the actual location of the L and R SCC for each individual subject. Do you know of a better way to do this?

On Thu, Apr 20, 2023 at 9:19 AM Huang, Yujing <yhuan...@mgh.harvard.edu> wrote:

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    Hi Carlos,

    mri_concat concatenates input .mgz files.

    The following command will output C.mgz with A.mgz as the first
    frame, and B.mgz as the second frame, assuming both A and B have
    only one frame.

    mri_concat --i A.mgz --i B.mgz --o C.mgz

    I’m not sure that is what you are looking for.

    Best,

    Yujing

    *From:* freesurfer-boun...@nmr.mgh.harvard.edu
    <freesurfer-boun...@nmr.mgh.harvard.edu> *On Behalf Of *Carlos Alcocer
    *Sent:* Wednesday, April 19, 2023 1:02 PM
    *To:* Freesurfer support list <freesurfer@nmr.mgh.harvard.edu>
    *Subject:* [Freesurfer] creating average labels

    *        External Email - Use Caution *

    Good afternoon,

    I would like to verify that the subcallosal cingulate cortex (SCC)
    segmentation of my subjects are correct. I want to do this by
    creating an average label of the left SCC and an average label of
    the right SCC which I can then map onto each subject.

    If I save these labels from each subject as a volume (.mgz) and
    then run mri_concat on the left SCC labels (.mgz) and then on the
    right SCC labels (.mgz), would this accomplish my desired goal?

    Tks,

    Carlos

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Carlos Alcocer
B.A. Neurobiology and Behavior, Cornell University, 2019
818-746-0302


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