Re: [Freesurfer] How is Total cortical gray matter volume calculated?

2020-10-27 Thread Douglas N. Greve
Yes, based on the surfaces. We use Anderson Winkler's truncated pyramid method. On 10/22/2020 5:55 AM, Ian Hardingham wrote: > External Email - Use Caution > > Hi Freesurfers, > > Is "total cortical gray matter volume" from aseg.stats calculated based > on the recon-all Surfaces?  Or

Re: [Freesurfer] How is Total cortical gray matter volume calculated

2020-04-27 Thread Douglas N. Greve
The volume between the surfaces is calculated On 4/25/2020 2:56 AM, Ian Hardingham wrote: > External Email - Use Caution > > Morning Freesurfers. > > Can you describe how the FS stat Total cortical gray matter volume is > calculated from the files in the freesurfer subject directory?  Is

Re: [Freesurfer] How is Total cortical gray matter volume calculated

2020-04-25 Thread Xiaojiang Yang
External Email - Use Caution Ian, You can use the mris_anatomical_stats command with the -b option. E.g., mris_anatomical_stats -b subjectid lh will give you a tabular output containing the total gray matter volume in the 3rd column: 128449 86239 *243375 *2.588 0.876

[Freesurfer] How is Total cortical gray matter volume calculated

2020-04-25 Thread Ian Hardingham
External Email - Use Caution Morning Freesurfers. Can you describe how the FS stat Total cortical gray matter volume is calculated from the files in the freesurfer subject directory?  Is there an mgz file where each voxel has an estimated percentage grey matter here as the