Dear FreeSurfer Experts,

 

while I'm doing my first FreeSurfer analysis with QDEC (cortical thickness in controls vs. patients) I'm having a problem with the coordinates QDEC puts out in the Terminal. I read some rather old posts about that but wondered if there has been some development since.

It was said that QDEC output (for find clusters and for MonteCarlo simulation) is in some approximate Talairach space; is that still true for version 5.3? Is there any way to get the coordinates in MNI or common Talairach space while using QDEC?

I understand that one way is to do the analysis without QDEC and add the flag --nofixmni, so there is no transformation from MNI-305 space to Talairach via Matthew Brett's non-linear transform. Is that right?

 

Thank you very much in advance,

 

Henrike