Hi Constantin,
When you used tkregister2 which volume was the target? Acoording to what you write it was the b0 volume. So when you apply the registration to the T1 volume, you should keep it that way.
--mov T1 --targ b0image and no -inv is necessary.
Let me know if I misunderstood what you were doing.
Lilla
On Mon, 12 Sep 2011, Constantin Anastasopoulos wrote:
Hellom
I coregistered manually a aparc+aseq.nii file to my DWI-space with tkregister2. I saved the .dat file and applied it later to the T1 image in order to apply the same spatial coregistration as to the aparc+aseg. For woth the aparc+aseg and the T1 I used the command mri_vol2vol --mov was the b0image --targ was the aparc+aseg and T1 respectively --o was the output (a .nii in both cases) --reg was the .dat file and at the and --inv.
While the aparc+aseg registration to the b0 worked, the T1-registration gave a false result (altough it had the same dimensions and was in the same space with the aparc+aseg).
What am I doing wrong? Is the mri_vol2vol command the wrong one? I want to apply the same changes as to the aparc+aseg, as they are saved in the .dat file.
Thanks a lot, Constantin
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