You have to do it one hemi at a time, eg,
mri_surf2vol --hemi lh --so lh.bp.nii.gz --subject fsaverage --o
smoothed.bpnd.in.volume.nii.gz
mri_surf2vol --hemi rh --so rh.bp.nii.gz --subject fsaverage --merge
smoothed.bpnd.in.volume.nii.gz --o smoothed.bpnd.in.volume.nii.gz
On 10/16/17 12:57 PM, Elijah Mak wrote:
Got it, thanks! I have already performed smoothing on the MGX surfaces
so I’d like to proceed with mri_surf2vol.
According to the “hidden secrets of success” for mri_surf2vol, there
are 2 methods. Is the command below correct?
mri_surf2vol --so lh.bp.nii.gz (the PET surface BPNDs) --so
rh.bp.nii.gz --subject fsaverage --o smoothed.bpnd.in.volume.nii.gz
The next step is to bring the volumes into CVS-MNI152 space.
Mri_cvs_register has been done on the T1.
Thanks Doug.
Best Wishes,
Elijah
*
*
*Dr. Elijah Mak, Research Associate
*Department of Psychiatry
Old Age Psychiatry Group | Cambridge Intellectual & Developmental
Disabilities Research Group
University of Cambridge
Trinity College, CB21TQ, UK
http://www.neuroscience.cam.ac.uk/directory/profile.php?fkm24
On 16 Oct 2017, at 16:08, Douglas Greve <gr...@nmr.mgh.harvard.edu
<mailto:gr...@nmr.mgh.harvard.edu>> wrote:
it comes down to have you smooth it. If you do it in the volume, then
you need to smooth it in the volume, and that is an invalid analysis
with MG.
On 10/13/17 8:42 PM, Elijah Mak wrote:
Hi Doug,
I wonder what is the difference between this approach (mri_surf2vol)
as opposed to doing the MRTM2 modelling on the MGX GM output (58
frames), which will give us the bp.nii.gz in volume space?
Thanks.
Best Wishes,
Elijah
On 13 Oct 2017, at 16:19, Douglas Greve <gr...@nmr.mgh.harvard.edu
<mailto:gr...@nmr.mgh.harvard.edu>> wrote:
do you mean you want to map the surface-based data into the volume? If
so, you can use mri_surf2vol. If you want to analyze your pet data in
the volume you can just do that with mri_glmfit
On 10/5/17 4:59 PM, Elijah Mak wrote:
Hi Doug,
Referring to the PETSURFER tutorial for dynamic PET data, I am
wondering if it is possible to obtain a volume-based equivalent of
mrtm2.lh.sm05/bp.nii.gz? As I understand, bp.nii.gz is the
partial-volumed corrected output that has been sampled onto the
fsaverage surface.
Thanks for your time again.
Best Wishes,
Elijah
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