Hi Dorit, I would probably run recon-all on the mni152, then map the
atlas onto the surface of the mni (mri_vol2surf with --regheader), then
create an annotation of the atlas using mris_seg2annot (run with --help
for examples), then use mris_apply_reg to transfer the annot to your
individual subjects or to fsaverage. Run with --help for examples
On 3/6/18 5:53 PM, Dorit Kliemann wrote:
Hi,
I’m trying to get an atlas (Harvard/Oxford sub&cortical) into individual space
via surface registration.
Motivation is to replicate a finding in volume space (functional data) in a
normal population with that atlas in a lesion data set where transformation to
template volume space is not feasible.
I think I found a way described in principle for one region below but it seems
clumsy with a lot of steps , so I’d like to check if there is a better/more
accurate ways with less transforms?
Any feedback appreciated!
Thanks,
Dorit
1) create a registration file from FSL-MNItemplate to Freesurfer space and
fsaverage
bbregister --s fsaverage --mov MNI152_T1_1mm_brain.nii.gz --init-fsl
--init-header --reg mni2fsaverage.dat --T1 --o mni2fsaverage.nii
2) warp atlas from FSL-MNI space onto surface of fsaverage
mri_vol2surf --mov HarvardOxford-cort-maxprob-thr25-1mm.nii.gz --reg
mni2fsaverage.dat --projdist-max 0 1 .01 --interp nearest --hemi lh --out
lh.atlas.mgh
3) writing label for id = 1
mri_cor2label --i lh.atlas.mgh --surf fsaverage lh --id 1 --l
./lh.1.atlas
4) move label from fsaverage onto individual subject space
mri_label2label --srclabel lh.1.atlas --srcsubject fsaverage --trglabel
lh.1.atlas --trgsubject subject --regmethod surface --hemi lh
5) create voluem form label
mri_label2vol --label subject/label/lh.1.atlas --subject subject --hemi
lh --identity --temp subject/mri/brain.mgz --o lh.1.atlas.volume.nii --proj
frac 0 1 .01
6) fix wholes/border ribbon
mri_binarize --dilate 1 --erode 1 --i lh.1.atlas.volume.nii --o
lh.1.atlas.volumebin.nii --min 1
mris_calc -o lh.1.atlas.volumebinfixed.nii lh.1.atlas.volumebin.nii
mul subject/mri/lh.ribbon.mgz
7) bring from subject T1-FS space (1mm) into subject's functional space
bbregister --s subject --mov func.nii --init-fsl --init-header --reg
anat2func_register.dat --bold
8) warp atlas image from individual subject anat space to subject bold space
mri_label2vol --seg lh.1.atlas.volumebinfixed.nii --temp func.nii --reg
anat2func_register.dat --fillthresh .5 --o lh.atlas.func.nii
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