Re: [Freesurfer] Correct for sulcuses & ventricles size

2020-12-13 Thread Greve, Douglas N.,Ph.D.
On 7/11/2018 11:37 AM, John Anderson wrote: External Email - Use Caution Dear Freesurfer experts, I have two groups of subjects (healthy and patients). The patients have different degrees of atrophy. Looking into the individual scans, the subjects are largely different in the space be

Re: [Freesurfer] Correct for sulcuses & ventricles size

2018-07-11 Thread Bruce Fischl
I suppose you could look for voxels that outside of the cortex and adjacent to it On Wed, 11 Jul 2018, John Anderson wrote: External Email - Use Caution Dear Dr Bruce, Thank you for the response. Indeed, I was completely wrong, these represent a pathology and should not corr

Re: [Freesurfer] Correct for sulcuses & ventricles size

2018-07-11 Thread John Anderson
External Email - Use Caution Dear Dr Bruce, Thank you for the response. Indeed, I was completely wrong, these represent a pathology and should not correct for! Kindly, I have one additional question not relevant to the subject of this email. Is there any way in Freesurfer to cr

Re: [Freesurfer] Correct for sulcuses & ventricles size

2018-07-11 Thread Bruce Fischl
Hi John why do you want to correct for them? They likely represent a pathological process, so correcting for them may remove whatever effects you are looking for, no? The space between the sulci and the ventricle volume won't directly affect surface-based analysis, but of course the sulcal wid