[Freesurfer] Creating a ROI mask

2011-07-04 Thread leonardo kay
Hi freesurfer 's Can anyone help me how to create a ROI mask. I have read the Cortical Thickness of a Volume-defined ROI tutorial but it doesn't specify how to generate that ROI.nii file. How many points are needed? What brain image must be used as a reference? Any help will be greatly appreciated

Re: [Freesurfer] Display data for Cortical thickness

2011-07-04 Thread Bruce Fischl
Hi Antonella, those regions should be compiled in the stats/aparc.annot.ctab file that should be easy to import into excel or other packages for analsys and plotting. cheers Bruce On Mon, 4 Jul 2011, Antonella Kis wrote: Good morning Bruce, I posted my message also to the list and I w

Re: [Freesurfer] Creating a ROI mask

2011-07-04 Thread Bruce Fischl
Hi Leo are you trying to create a surface-based ROI or a volume one? What do you want to do with it after it exists? cheers Bruce On Mon, 4 Jul 2011, leonardo kay wrote: > Hi freesurfer 's > Can anyone help me how to create a ROI mask. I have read the Cortical > Thickness of a Volume-defined R

[Freesurfer] PET analyses in cortical regions

2011-07-04 Thread Joao Pereira
Dear Freesurfers, My goal is to evaluate the cortical thinning patterns in some (cortical aparc) regions, and to relate that to loss of PET activation in the same regions. I would like to clarify the steps of the pipeline in Freesurfer (v5.0.0) for this purpose. >From my reading of previous

Re: [Freesurfer] Display data for Cortical thickness

2011-07-04 Thread Antonella Kis
Thank you very much Bruce! The only files that I have in stats directory after running recon-all and qcache -al are the following: lh.aparc.a2009s.stats lh.entorhinal_exvivo.stats rh.curv.stats lh.aparc.stats rh.aparc.a2009s.stats rh.entorhinal_exvivo.stats lh.BA.stats

Re: [Freesurfer] Display data for Cortical thickness

2011-07-04 Thread Bruce Fischl
Yes On Jul 4, 2011, at 2:12 PM, Antonella Kis wrote: > > > Thank you very much Bruce! > > The only files that I have in stats directory after running recon-all and > qcache -al are the following: > > > lh.aparc.a2009s.stats lh.entorhinal_exvivo.stats rh.curv.stats > lh.aparc.stats

[Freesurfer] Hippocampal subfield segmentation

2011-07-04 Thread Tricia Merkley
Hi, I understand that the models for the hippocampal subfield segmentation were created using high resolution MRI scans.  But it sounds like this procedure can be used for scans with 1mm ^3 resolution, right?  The resulting values would just need to be divided by 8 in order to get the subfield