What does "isn't displaying the same i/j/k ras" mean? In what tool? What
is the result of running mri_info on each volume?
On 5/5/2022 4:54 AM, Zeng, Victor (BIDMC - Keshavan - Psychiatry) wrote:
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For some reason it isn't displaying the same i/j/k ras. The T1 and the
registered image (ASL) is in the same dimension/voxel sizes. The TR is
different at 7ms (T1) vs ~9000ms (ASL). When I try mri_convert -tr 7
asl.nii asl.mgz, it doesn't change the incorrect i/j/k ras matrix
Victor Zeng
Beth Israel Deaconess Medical Center
Keshavan Lab
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*From:* freesurfer-boun...@nmr.mgh.harvard.edu
<freesurfer-boun...@nmr.mgh.harvard.edu> on behalf of
falk.luesebr...@med.ovgu.de <falk.luesebr...@med.ovgu.de>
*Sent:* Thursday, May 5, 2022 4:17 AM
*To:* freesurfer@nmr.mgh.harvard.edu <freesurfer@nmr.mgh.harvard.edu>
*Subject:* [External] Re: [Freesurfer] Reversing mri_convert
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Hi Victor,
in case you used mri_convert like this only, there is no change in
orientation or spacing between orig.mgz and T1.nii. So, whatever you
registered to the T1.nii should also be in space of the orig.mgz.
Best,
Falk
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________________________________
Von: freesurfer-boun...@nmr.mgh.harvard.edu
<freesurfer-boun...@nmr.mgh.harvard.edu> im Auftrag von Zeng, Victor
(BIDMC - Keshavan - Psychiatry) <vz...@bidmc.harvard.edu>
Gesendet: Donnerstag, 5. Mai 2022 10:09:26
An: freesurfer@nmr.mgh.harvard.edu
Betreff: [Freesurfer] Reversing mri_convert
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Hi,
I convert orig.mgz -> T1.nii using mri_convert orig.mgz T1.nii
I now have something registered to the T1.nii and would like to move
it back to Freesurfer space. How would you go about doing that? I am
assuming I would do the inverse of the mri_convert, but I can't seem
to find the option to write the matrix.
Victor Zeng
Beth Israel Deaconess Medical Center
Keshavan Lab
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