Hi Gio,

did you check the output of the skull stripping? It is the most likely culprit. It's hard to tell from those images, but if the lateral cortex gets significantly darker than more medial stuff (which happens at high field) you might need to add some control points in the white matter of the region that was excluded. It would also help if you gave us some details of the acquisition. What field strength? Was it prescan normalized? Is there a body coil?

cheers
Bruce


  On Thu, 11 Jan 2018, Giovana dos Santos Cover wrote:


Dear Freesurfer Developers,

 

I am trying to segment the grey matter and pial surface using the FreeSurfer 
command recon-all with
the hires flag. But even though there is no error while executing my code, when 
I analyze the output
surfaces, the segmentation is missing some areas in the brain (I attached an 
image to show these
brain regions).

 

My command is:

 

recon-all -all -s $SUBJ -hires -i $IMAGE -expert $EXPERT_FILE

 

My expert file contains:

 

mri_em_register -p .5

mris_fix_topology -s 50

mris_inflate -n 100

 

Does anyone have any thoughts on how to troubleshoot my problem?

 

Thanks in advance,

 

Gio.

 

 1. FreeSurfer version: 
freesurfer-Linux-centos6_x86_64-stable-pub-v6.0.0-2beb96c
 2. u-name -a: Linux ubuntu 4.4.0-93-generic #116-Ubuntu SMP Fri Aug 11 
21:17:51 UTC 2017 x86_64
    x86_64 x86_64 GNU/Linux
[IMAGE]


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