Re: [Freesurfer] Sulcal depth units (Simon Vandekar)

2016-01-22 Thread Andreas Schuh
Hi, I studied the FreeSurfer code for MRISinflateBrain and came across a discrepancy in how the sulcal depth is computed. This explains why the values are much smaller than expected. My question @Bruce is if this is intentional or (as the function names below indicate) possibly a bug in the

[Freesurfer] Bug in mrisComputeOriginalVertexDistances

2015-11-14 Thread Andreas Schuh
Hi, I am just studying the FreeSurfer open source code (obtained from the read-only CVS, “dev” branch checkout instructions). It appears there is a slight mistake in mrisComputeOriginalVertexDistances. The following code computes the difference between v->y and vn->origy, where it probably

[Freesurfer] Changing labels of aseg.mgz to {BG, CSF, GM, WM}

2011-10-26 Thread Andreas Schuh
Hi FreeSurfers, The results of FreeSurfer include a subcortical segmentation and a segmentation of white matter only. However, there is no segmentation of (background), cerebrospinal fluid, gray matter, and white matter only as produced by other tools. Such segmentation is often (as in our case)

[Freesurfer] Suggested longitudinal processing stream for already skull stripped images

2011-10-14 Thread Andreas Schuh
Hi, We are attempting to use FreeSurfer in order to process a longitudinal T1 series. Our input data is partly simulated and already skull stripped. When running $ recon-all -autorecon1 on one of these images, the check of the Talairach transformation fails. Using the option -notal-check