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what is roi_in_MNI152.mgz? If that is an binary ROI mask, then that will
certainly fail. Try something like
mri_coreg --mov orig.mgz --dof 12 --reg reg.mni152.lta --targ
mni152-template.nii.gz
where mni152 template is an intensity volume in voxel-for-voxel
registration with your roi volume, then
mri_vol2vol --interp nearest --mov orig.mgz --targ roi_in_MNI152.mgz
--reg reg.mni152.lta --inv
On 5/18/2023 5:33 PM, Carlos Alcocer wrote:
External Email - Use Caution
Hi,
I am trying to transform a volumetric ROI from MNI152 space to native
space. I am doing this in 2 steps. First (1) I am creating a
registration file using bb register to create a registration file and
then (2) I am using mri_vol2vol to transform volume onto my subject
using the registration file I created in step 1.
1. bbregister --s subjid --mov roi_in_MNI152.mgz --t1 --reg register.dat
2. mri_vol2vol --targ subjid/mri/T1.mgz --mov roi_in_MNI152.mgz --reg
register.dat --o roi_in_native.mgz
However, the transformed volume is not anatomically positioned where
it is supposed to be. Is there an error in my method?
Thank you,
Carlos
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