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Hello Freesurfers developers,
I am very new to freesurfer. After getting the brainnetome parcellations
using freesurfer, we need to convert the BN_Atlas.annot file from surface
space into volumetric space. But the problem we have is that the converted
labels have holes inside (see attached image 1). I am aware that this
problem has been mentioned on this mailing list. But the suggested solution
to use mri_label2vol –seg aparc + aseg.mgz will not work for us as the
Brainnetome script does not output such files. We tried two different ways
(see below), which did not result in success.
1. This command successfully brings the labels from surface to
volumetric space but gives us the holes inside the labels.
Mri_label2vol --annot BN_Atlas.annot --subject 1000 --hemi
lh --o xxxx/xxx/xxxxx/xxxxx/BN_Atlas.mgz --identity --temp
xxx/xxxxxx/xxxxx/brain.mgz --proj frac 0 1 0.5
2. I emailed the Brainnetome authors and they suggested the command
below. (In the command below I am trying to convert only 9 Brainnetome
labels, just to see, if it will work).
mri_annotation2label --subject 1001_20180507_MPRAGE --hemi lh --annotation
BN_Atlas --sd /tmp/yassamri/R21/caro/Freesurfer/Freesurfer --labelbase
/tmp/yassamri/R21/caro/Freesurfer/Freesurfer/1001_20180507_MPRAGE/test/lh.BN
mri_label2vol --label lh.BN-000.label --label lh.BN-001.label --label
lh.BN-003.label --label lh.BN-005.label --label lh.BN-007.label --label
lh.BN-009.label --label lh.BN-009.label --label lh.BN-011.label --label
lh.BN-013.label --subject 1001_20180507_MPRAGE --sd
/tmp/yassamri/R21/caro/Freesurfer/Freesurfer/ --hemi lh --identity
--fill-ribbon --o final.nii.gz
This approach results in converted labels in volumetric space without
holes, but all the labels have the value 1 (see attached image 2). But we
need to keep the correct Brainnetome label values in volumetric space. What
command/options could I use to overcome the problem with the holes and
convert the file BN_Atlas.annot into volumetric space
while keeping the Brainnetome label values?
Thank you very much for your help in advance!!
Carolin
Our freesurfer version:
freesurfer-Linux-centos6_x86_64-stable-pub-v6.0.0-2beb96c
we run it on Linux, kernel version 4.15.0-46-generic, Ubuntu 18.04.1 LTS
[image: image001.png]
[image: Screen Shot 2019-04-11 at 5.46.19 PM.png]