I'm not sure I understand what you are asking about. Do you mean in the
aseg.mgz or the aparc+aseg.mgz? Unknown is usually just stuff outside of
the head, but sometimes can be in the head (eg, with aparc+aseg.mgz).
On 02/22/2018 08:51 AM, Daniel van de Velden wrote:
> Dear fellow colleagues,
>
>
> in my study I use volumetric source spaces. In the process of creating
> them, I decided to identify all available volumelabels FreeSurfer
> "recognized" in the given mri image.
>
> Every single subject inherits, despite all other volumelabels, a
> volumelabel called "Unknown". In an 3D representation of those "unknown"
> volumelabel coordinates I opine those points could also be part of other
> volumelabels like cerebral cortex or white matter.
>
> Would you please give me a detailed explanation of the origin of this
> 'Unknown' label? Specifically in respect to the fsaverage "subject".
>
>
> Best regards,
>
> Daniel van de Velden
>
> ___
> Freesurfer mailing list
> Freesurfer@nmr.mgh.harvard.edu
> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
>
>
--
Douglas N. Greve, Ph.D.
MGH-NMR Center
gr...@nmr.mgh.harvard.edu
Phone Number: 617-724-2358
Fax: 617-726-7422
Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting
FileDrop: https://gate.nmr.mgh.harvard.edu/filedrop2
www.nmr.mgh.harvard.edu/facility/filedrop/index.html
Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/
___
Freesurfer mailing list
Freesurfer@nmr.mgh.harvard.edu
https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
The information in this e-mail is intended only for the person to whom it is
addressed. If you believe this e-mail was sent to you in error and the e-mail
contains patient information, please contact the Partners Compliance HelpLine at
http://www.partners.org/complianceline . If the e-mail was sent to you in error
but does not contain patient information, please contact the sender and properly
dispose of the e-mail.
