[Freesurfer] A question about symmetry between two hemisphere

Dear Expert,   I want to exame the symmetry property of two hemispheres,for example, symmetry of cortical thickness or lgi,  I want to know whether the same ID of the two hemispheres after resampling using the average pial surface corespond to the same anatomical region.       For example,  

Re: [Freesurfer] A question about symmetry between two hemisphere

no, the vertex index is essentially arbitrary and you can't use it to compare left and right. Doug had some tools for this, but I'm not sure whether they are ready for primetime yet. cheers, Bruce On Sun, 18 Jan 2009, Zhangyuanchao wrote: Dear Expert,   I want to exame the symmetry property

Re: [Freesurfer] mris_divide_parcellation output problem

Hi Jürgen, turns out this was a display but in tksurfer, which I fixed. It would stop displaying after the 3000th annotation unit. If you tell us what os/hardware you are running on we can send you a new version. cheers, Bruce On Sat, 17 Jan 2009, Jürgen Hänggi wrote: Dear FS experts

[Freesurfer] Grey matter volume

Hi, I was curious as to whether or not freesurfer obtains a total grey matter volume? Thanks Alexa ___ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer

Re: [Freesurfer] Grey matter volume

Hi Alexa One way is to use mris_volume to get that indirectly. grey matter volume = pial volume - white matter volume. Krish On Jan 18, 2009, at 7:02 PM, Alexa Nardelli wrote: Hi, I was curious as to whether or not freesurfer obtains a total grey matter volume? Thanks Alexa

Re: [Freesurfer] Grey matter volume

do you mean cortical and subcortical? If so, no we don't, but it would be easy enough to add it all up from the stats file. cheers, Bruce On Sun, 18 Jan 2009, Alexa Nardelli wrote: Hi, I was curious as to whether or not freesurfer obtains a total grey matter volume? Thanks Alexa

[Freesurfer] A question about symmetry between two hemisphere

hi yczhang, see also my reply on Dec 2 2008 to frederic.anders...@univ-tours.fr re similar question -- search freesurfer archives on comparing hemispheres Ultimately to look at the symmetry question properly, we will need Doug's tool. In the interim, below is one, admittedly imperfect

[Freesurfer] topo_defect_before subject

Hi all- I'm doing the online tutorial and I can't find the subject topo_defect_before as instructed in http://surfer.nmr.mgh.harvard.edu/fswiki/FsTutorial/TroubleshootingData i've downloaded all the data except for the Feat-related stuff. Am I missing something? I apologize in advance

[Freesurfer] mri_convert

Hi, I am finished to run my subjects using recon-all and I would like to know the usage of mri_convert to convert the results of FreeSurfer into the analyze format or nifti. Some of the results of FreeSurfer are volumes (e.g. brainmask.mgz) and some of them are surfaces (e.g. lh inflated).