Hey Lilla,
I found the error that I made in the original command I posted; I forgot to
switch the --targ & --mov inputs in the first mri_vol2vol command. Here's the
corrected version that works for me:
mri_vol2vol --targ $FREESURFER_HOME/subjects/cvs_avg35/mri/norm.mgz \
--m3z
$SUBJECTS_DIR/$subj/cvs/combined_tocvs_avg35_elreg_afteraseg-norm.m3z \
--noDefM3zPath --inv-morph \
--mov $SUBJECTS_DIR/$subj/mri/norm.mgz \
--o temporary_volume.mgz \
--interp trilin --no-save-reg
mri_vol2vol --targ temporary_volume.mgz \
--reg $SUBJECTS_DIR/$subj/dtrecon/register.dat \
--inv \
--mov $SUBJECTS_DIR/$subj/dtrecon/lowb.nii \
--o lowb.ANAT+CVS-to-avg35.mgz \
--interp trilin --no-save-reg
Thanks again for the help!
Thanks,
Doug
Douglas Merkitch
Neurological Sciences
Rush University Medical Center
On Jan 31, 2017, at 12:14 PM, Douglas Merkitch
<douglas_merki...@rush.edu<mailto:douglas_merki...@rush.edu>> wrote:
Hello,
I'm reposting the following just in case anyone has any ideas. Any input would
be greatly appreciated!
Thank you very much for the suggestion. Here then are my attempts at putting
what you said into two sequential commands:
mri_vol2vol --targ $SUBJECTS_DIR/$subj/mri/norm.mgz \
--m3z
$SUBJECTS_DIR/$subj/cvs/combined_tocvs_avg35_elreg_afteraseg-norm.m3z \
--noDefM3zPath --inv-morph \
--mov $FREESURFER_HOME/subjects/cvs_avg35/mri/norm.mgz \
--o temporary_volume.mgz \
--interp trilin --no-save-reg
mri_vol2vol --targ temporary_volume.mgz \
--reg $SUBJECTS_DIR/$subj/dtrecon/register.dat \
--inv \
--mov $SUBJECTS_DIR/$subj/dtrecon/lowb.nii \
--o lowb.ANAT+CVS-to-avg35.mgz \
--interp trilin --no-save-reg
Do the above commands look OK? I tried these commands, but the results were not
great so I suspect that something is incorrect in the syntax and/or inputs.
Thanks,
Doug
Douglas Merkitch
Neurological Sciences
Rush University Medical Center
On Jan 26, 2017, at 2:41 PM, Douglas Merkitch
<douglas_merki...@rush.edu<mailto:douglas_merki...@rush.edu>> wrote:
Hello Lilla,
Thank you very much for the suggestion. Here then are my attempts at putting
what you said into two sequential commands:
mri_vol2vol --targ $SUBJECTS_DIR/$subj/mri/norm.mgz \
--m3z
$SUBJECTS_DIR/$subj/cvs/combined_tocvs_avg35_elreg_afteraseg-norm.m3z \
--noDefM3zPath --inv-morph \
--mov $FREESURFER_HOME/subjects/cvs_avg35/mri/norm.mgz \
--o temporary_volume.mgz \
--interp trilin --no-save-reg
mri_vol2vol --targ temporary_volume.mgz \
--reg $SUBJECTS_DIR/$subj/dtrecon/register.dat \
--inv \
--mov $SUBJECTS_DIR/$subj/dtrecon/lowb.nii \
--o lowb.ANAT+CVS-to-avg35.mgz \
--interp trilin --no-save-reg
Do the above commands look OK? I tried these commands, but the results were not
great so I suspect that something is incorrect in the syntax and/or inputs.
Thanks for your help!
Doug
Douglas Merkitch
Neurological Sciences
Rush University Medical Center
Email: douglas_merki...@rush.edu<mailto:douglas_merki...@rush.edu>
On Jan 26, 2017, at 8:42 AM, Lilla Zollei
<lzol...@nmr.mgh.harvard.edu<mailto:lzol...@nmr.mgh.harvard.edu>>
wrote:
Hi Doug,
In order to compute and apply the inverse of an m3z transform you would need to
use the --inv-morph flag instead of the --m3z and reverse your targ and mov
inputs. With the current implementation of mri_vol2vol though I do not think
that you can specify the order of the transforms (which is important here), so
you would need to apply the inverse non-linear trasform first and then the
inverse rigid.
Lilla
On Wed, 25 Jan 2017, Douglas Merkitch wrote:
Hello Freesurfer experts,
>From your wiki page, I understand how to normalize volumes in subject
>diffusion space to the CVS template:
mri_vol2vol --targ $FREESURFER_HOME/subjects/cvs_avg35/mri/norm.mgz \
--m3z
$SUBJECTS_DIR/$subj/cvs/combined_tocvs_avg35_elreg_afteraseg-norm.m3z \
--noDefM3zPath --reg $TUTORIAL_DIR/$subj/dtrecon/register.dat \
--mov fa-masked.mgz \
--o fa-masked.ANAT+CVS-to-avg35.mgz \
--interp trilin --no-save-reg
However, how would one take take a volume in CVS template space and reverse
normalize it back to subject diffusion space? Is this possible? If so, what
would that command look like and what other st
eps would be necessary to get the required inputs?
Thanks,
Doug
Douglas Merkitch
Neurological Sciences
Rush University Medical Center
Email: douglas_merki...@rush.edu<mailto:douglas_merki...@rush.edu>
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