External Email - Use Caution        

Yes, I do only need cortex gray matter. Great, then I'll use the ribbon.mgz in 
order to create a gray matter mesh.

Thank you for your answer!

________________________________
Von: [email protected] 
<[email protected]> im Auftrag von Douglas N. Greve 
<[email protected]>
Gesendet: Montag, 8. Juni 2020 16:23:12
An: [email protected]
Betreff: Re: [Freesurfer] How can I create a grey matter volume in Matlab?

When you say "gray matter" do you mean all gray matter or just cortex? If just 
cortex, then you need to take all the voxels between white and pial surfaces. 
This is already done in the ribbon.mgz file

On 6/8/2020 10:05 AM, Franziska Klein wrote:

        External Email - Use Caution

Hello again,


unfortunately, nobody is responding. .


Until now I am able to create meshes from the freesurfer output files with the 
isosurface() and read_surf() functions from a  MATLAB based toolbox . However, 
I still do not know with which combinations of the outputs of recon-all I could 
create a grey matter only mask.


My goal is to get subject specific channel MNI coordinates projected onto the 
cortex (grey matter). My solution at the moment is to simply use the pial 
surfaces (rh.pial and lh.pial), however, I am not sure if this is sufficient. 
Any thoughts or ideas maybe?


Thanks,

Franziska


________________________________
Von: Franziska Klein
Gesendet: Mittwoch, 27. Mai 2020 11:05
An: [email protected]<mailto:[email protected]>
Betreff: How can I create a grey matter volume in Matlab?


Dear freesurfer user,


due to the Covid 19 situation I am working in home office with a windows 
computer and can not run any freesurfer functions (installing a virtual box is 
not really an option). For all my subjects I do already have all output files 
from recon all. In the output, I found a wm.mgz but unfortunately there is no 
gm.mgz.


Is it somehow possible to create a grey matter volume by using the recon all 
output in combination with Matlab?


Thank you and kind regards,

Franziska




------------------------------------------

Franziska Klein, M.Sc.
Neurocognition and Functional
Neurorehabilitation Group
Neuropsychology Lab
Department of Psychology

University of Oldenburg
D-26111 Oldenburg
Germany

Office: A7 0-066
Phone: +49-441-798-4947
Fax:   +49-441-798-5522








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