Hi Judith - The files under hcp/mni/ are in the space of the actual MNI 
template. The files under hcp/syn/ are in the space of 
MGH35_HCP_FA_template.nii.gz.

Also, there is no need to use version 7.2.0-beta any more, the official 7.2.0 
is out.

Hope this helps,
Anastasia.

________________________________
From: freesurfer-boun...@nmr.mgh.harvard.edu 
<freesurfer-boun...@nmr.mgh.harvard.edu> on behalf of Schaechter, Judith D. 
<jschaech...@mgh.harvard.edu>
Sent: Monday, November 22, 2021 7:46 PM
To: freesurfer@nmr.mgh.harvard.edu <freesurfer@nmr.mgh.harvard.edu>
Subject: [Freesurfer] Converting .trk files in mini space to nifti using 
dorm_trk2trk

Hi,

I'd like to convert *trk files that are in mni space to nifti files using  
dmri_trk2trk.

The *trk files are here: 
/autofs/vast/freesurfer/centos7_x86_64/7.2.0-beta/trctrain/hcp/mni

Attempts so far (that have failed) are:
dmri_trk2trk --in TRACK_FILE.display.trk --outvol TRACK_FILE.display.mni.nii.gz 
--inref ../MGH35_HCP_FA_template.nii.gz --outref ../MGH35_HCP_FA_template.nii.gz

dmri_trk2trk --in TRACK_FILE.display.trk --outvol TRACK_FILE.display.mni.nii.gz 
--inref ../MGH35_HCP_FA_template.nii.gz --outref 
../MGH35_HCP_FA_template.nii.gz --reg MGH35_HCP_FA_template_identity.mat
 with MGH35_HCP_FA_template_identity.mat generated by:
flirt -in MGH35_HCP_FA_template.nii.gz -ref MGH35_HCP_FA_template.nii.gz -omat 
MGH35_HCP_FA_template_identity.mat

dmri_trk2trk --in TRACK_FILE.display.trk --outvol TRACK_FILE.display.mni.nii.gz 
--inref ../MGH35_HCP_FA_template.nii.gz --outref 
../MGH35_HCP_FA_template.nii.gz --reg MGH35_HCP_FA_2_MNI152_T1_2mm_brain.mat
with MGH35_HCP_FA_2_MNI152_T1_2mm_brain.mat generated by:
flirt -in MGH35_HCP_FA_template.nii.gz -ref MNI152_T1_2mm_brain.nii.gz -omat 
MGH35_HCP_FA_2_MNI152_T1_2mm_brain.mat

Thanks in advance for your help!
Judith


*******************************************************

Judith D. Schaechter, Ph.D., M.S.P.T.

Athinoula A. Martinos Center for Biomedical Imaging

Massachusetts General Hospital, Harvard Medical School

13th Street, Building 149, Room 2301

Charlestown, MA 02129

Office 617-726-5622 | Cell 781-752-6247 | Fax 617-726-7422

Email  jschaech...@mgh.harvard.edu




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