Construct Sturctural Connectome and Cortical Parcellation Volume Generation

1

Hi, Mrtrixers,

I intend to create volumes of cortical parcellation labels with streamlines assignment to parcellations. ( similar to Fig 1)

I firstly construct structural connectome with FreeSurfer’s aparc+aseg.mgz. then generate cortical labels volume with commands: mri_annotation2label and mri_label2vol. finally, I transform the label.nii.gz file to label.raw file(RW2 (Panasonic) ), so that I can render the labels.

Does the process make sense? The commands are as below.

Also, two another questions:

  1. as shown in Fig 2, It is clear that the nodes are there, but missing some cortical label surface when I mrview the connectome node image.
  2. as shown in Fig 3, lh.bankssts.labels does not show up when I choose “volume render” option.

Can anyone provide me some comments?

Thanks a lot!
Chaoqing

Fig 1 Structural Connectomics - Mrtrix3 homepage

Connectome
Connectome750×410 157 KB

Fig 2 mrview aparc+aseg_Desikan_Killany_nodes.nii

4030_example_aparc aseg_lut_02
4030_example_aparc aseg_lut_021461×1005 370 KB

4030_example_aparc aseg_lut_01
4030_example_aparc aseg_lut_01829×892 405 KB

Fig 3
(ortho view) - lh.bankssts.label.nii.gz

gz_01
gz_01748×582 32.4 KB

(volume render) - lh.bankssts.label.nii.gz
gz_02
gz_02747×584 33.4 KB

Commands:

recon-all -i T1_source.nii.gz -s T1_source_bert -all -openmp 8

labelconvert T1_source_bert/mri/aparc+aseg.mgz /usr/local/freesurfer/FreeSurferColorLUT.txt …/…/share/mrtrix3/labelconvert/fs_default.txt Connectome/aparc+aseg_Desikan_Killany_nodes.nii

tck2connectome Output_ACT/DTI_processed_ACT_5TTwmmask_seedgmwmi_0.5M.tck Connectome/aparc+aseg_Desikan_Killany_nodes.nii Connectome/connectome.csv -out_assignments Connectome/assignments.csv

mkdir Connectome/Region2Region_tck

connectome2tck Output_ACT/DTI_processed_ACT_5TTwmmask_seedgmwmi_0.5M.tck > Connectome/assignments.csv Connectome/Region2Region_tck/edge_tracks_ -nodes 1 -files per_edge

mri_annotation2label --subject T1_source_bert/ --hemi lh --outdir /Volume/CorticalLabels
mri_annotation2label --subject T1_source_bert/ --hemi rh --outdir /Volume/CorticalLabels

tkregister2 --mov T1_source_bert/mri/rawavg.mgz --noedit --s T1_source_bert/ --regheader --reg /Volume/CorticalLabels_register.dat

mri_label2vol --label /Volume/CorticalLabels/lh.bankssts.label --temp T1_source_bert/mri/rawavg.mgz --subject T1_source_bert/ --hemi lh --o /Volume/CorticalLabels_Volume/lh.bankssts.nii.gz --proj frac 0 1 .1 --fillthresh .3 --reg /Volume/CorticalLabels_register.dat

mri_label2vol --label /Volume/CorticalLabels/rh.bankssts.label --temp T1_source_bert/mri/rawavg.mgz --subject T1_source_bert/ --hemi rh --o /Volume/CorticalLabels_Volume/rh.bankssts.nii.gz --proj frac 0 1 .1 --fillthresh .3 --reg /Volume/CorticalLabels_register.dat