[Freesurfer] Intensity inhomogeneity messing with the wm.mgz

2020-04-25 Thread Zeng, Victor (BIDMC - Keshavan - Psychiatry)
Hi Freesurfer developers, I have a subsample of a FS dataset that have scanner-originated hyperintensities in the bilateral supramarginal/temporal lobes. I've manually removed these hyperintensities by editing the wm.mgz, yet FS seems to be unable to recognize these edits when looking at the

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