[Freesurfer] qdec question

2016-11-24 Thread Yaakub, Siti Nurbaya
Dear Experts, I'm looking at differences in area between two groups of subjects in FreeSurfer using qdec. I've delineated an ROI based on a cluster that showed significant differences in surface area between the two groups (taking gender into account, and with age and ICV as nuisance covariates

[Freesurfer] Mean gray-white contrast for each ROI

2017-05-17 Thread Yaakub, Siti Nurbaya
Hi, I read from a previous post that the "{lh,rh}.w-g.pct.stats files in $SUBJECTS_DIR/subject/stats … will have the mean gray-white contrast for each ROI in the aparc." I've looked at the lh.w-g.pct.stats file and am not sure which values I should be looking at if I am interested in the ratio

[Freesurfer] Atlases in FreeSurfer

2018-07-30 Thread Yaakub, Siti Nurbaya
External Email - Use Caution Hello, I’m working on a comparison of atlas and segmentation methods. One of the atlas sets I’m using is the subset of Neuromorphometrics data from the MICCAI 2012 Grand Challenge and Workshop on Multi-Atlas Labeling. From what I understand, the “ge