Re: [Freesurfer] ROI mask extraction from asec and apark

2019-03-14 Thread Greve, Douglas N.,Ph.D.
Look here, example #9 http://surfer.nmr.mgh.harvard.edu/fswiki/CoordinateSystems On 3/14/19 5:01 AM, Tim Hahn wrote: > External Email - Use Caution > > Dear Freesurfer experts, > > as far as I understand, Freesurfer employs the Desikan-Killiany Atlas > (by default) to compute the various

[Freesurfer] ROI mask extraction from asec and apark

2019-03-14 Thread Tim Hahn
External Email - Use Caution Dear Freesurfer experts, as far as I understand, Freesurfer employs the Desikan-Killiany Atlas (by default) to compute the various parameters based on the aseg and aparc files. For my analysis, I now need the Desikan-Killiany Atlas ROI mask(s) (cort

Re: [Freesurfer] roi mask?

2016-05-27 Thread Bruce Fischl
yes, they are based on different atlases. You can look at the original papers (Rahul Desikan's is one and Christophe Destriuex's is the other) to see the differences. Or you can load the various .annot files in freeview on the inflated surface to see them visually cheers Bruce On Fri, 27 May 2

Re: [Freesurfer] roi mask?

2016-05-27 Thread Marja Caverlé
Hi Bruce, Thanks for the fast response! I indeed found them in other stats files. What is the difference between these files? I assume they are based on different atlases? I saw that there are some slight differences between the numbers in different files for the same structures, so how do I know

Re: [Freesurfer] roi mask?

2016-05-27 Thread Bruce Fischl
it depends what they are. You can look in the other stats files to see if they are there (we include a couple of cortical parcellations). If they aren't, you can draw them yourself on fsaverage and map them to all your subjects using our spherical transform cheers Bruce On Fri, 27 May 2016, Ma

Re: [Freesurfer] roi mask?

2016-05-27 Thread Marja Caverlé
Hi Bruce, Thanks, that indeed includes most of the roi's I want to include. What if there are some area's that are not in that list? Is there a way of adding areas? Best, Marja On Fri, May 27, 2016 at 10:26 PM, Bruce Fischl wrote: > Hi Marja > > what ROI do you mean? We generate lots of them,

Re: [Freesurfer] roi mask?

2016-05-27 Thread Bruce Fischl
Hi Marja what ROI do you mean? We generate lots of them, and tabulate the thickness within each one. Look for example in id>/stats/aparc.stats cheers Bruce On Fri, 27 May 2016, Marja Caverlé wrote: Hi all, So I ran a recon-all -all on one of my subjects, and it completed without errors (acc

[Freesurfer] roi mask?

2016-05-26 Thread Marja Caverlé
Hi all, So I ran a recon-all -all on one of my subjects, and it completed without errors (according to the log). Now I would like to get cortical thickness numbers from this subject, but when I open the tutorial regarding this, it says it assumes that you already have a roi mask and a T1 in the sa

[Freesurfer] ROI mask

2011-01-27 Thread Palzes, Vanessa
Hi all, I am currently exploring anatomical ROI analysis in FreeSurfer. I would like to create ROIs based on a Brodmann Area atlas, since unfortunately FreeSurfer currently only segments a few of these regions automatically. I know I could define the ROI manually in FreeSurfer, but I would pref