Can you try using mri_convert? Like,
mri_convert mni152.nii.gz --apply_inverse_transform xform.m3z subject.mgz
Let me know if that works

On 9/8/2020 8:28 PM, Noriana Jakopin wrote:

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Hello,
I just wanted to follow up on this and see if anyone had any suggestions, as I still have not resolved the issue.

Best,
Noriana Jakopin

On Tue, Aug 18, 2020 at 12:54 PM Noriana Jakopin <nejakop...@gmail.com <mailto:nejakop...@gmail.com>> wrote:

    Hello FreeSurfer Developers,
    I am attempting to use the inverse of the final m3z registration
    file produced by mri_cvs_register to take files in mni152 space
    back into my subject's space. I used mri_vol2vol with the
    --inv-morph flag to accomplish this. However, the resulting
    outputs produce images with abnormal warpings to the brain. Using
    mri_vol2vol to take subject files into mni152 space with the same
    m3z file works fine, it seems to be the inverse that is the
    problem. Does anyone have thoughts on how I can remedy this issue?

    FreeSurfer Version: freesurfer-linux-centos6_x86_64-7.1.1
    Platform: Windows Subsystem for Linux - Ubuntu 18.04 LTS

    Thank you!
    Noriana Jakopin


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