Dear all,

I have used probabilistic tractography methods by FSL-FDT to get probabilistic connectivity between grey-white matter interface of precentral and basal ganglia in subjects’ space. The latter one was used as classification mask. And then all of tractography maps were registered to MNI space.

Now I want to project tractography results like seed_to_BG.nii.gz to pial in Freesurfer and calculate mass center of those maps. But unfortunately I am not clear how to do that. So there is my question:

1.It is not difficult to project seed_to_BG.nii.gz to .../mri/orig.mgz. But how to project to pial after that?

2.How can I get mass center like pictures in attachment. I tried calculated mass center of seed_to_BG.nii.gz in MNI space, but the mass center point does not fall in precentral. So I want to do that in pial.

3.How to transform subjects’ pial to talairach pial?

I searched method to do that for a long time, but have no idea yet. So I hope I can get valuable suggestions here.

I will be grateful if you can help me!

Sincerely，
Jinnan Gong

Best wishes for you!
Key Laboratory for NeuroInformation of Ministry of Education, School of Life Science and Technology, University of Electronic Science and Technology of China