Re: [Freesurfer] Using TRACULA ROI for image in diffusionspace

2015-02-18 Thread Barbara Kreilkamp
Merci bien :). On Wed, Feb 18, 2015 at 2:54 PM, Anastasia Yendiki < ayend...@nmr.mgh.harvard.edu> wrote: > > Hi Barbara Anne - Actually it's fine if you use the -r flag in fslstats, > because that will give you a robust maximum (i.e., if there are a couple of > voxels that are outliers with a ver

Re: [Freesurfer] Using TRACULA ROI for image in diffusionspace

2015-02-18 Thread Anastasia Yendiki
Hi Barbara Anne - Actually it's fine if you use the -r flag in fslstats, because that will give you a robust maximum (i.e., if there are a couple of voxels that are outliers with a very high value it won't take them into account, which is probably a good idea here). Then use 20% of that robust

Re: [Freesurfer] Using TRACULA ROI for image in diffusionspace

2015-02-18 Thread Barbara Kreilkamp
Thank you very much Anastasia, May I please check with you if what I am thinking of doing sounds correct? I would use fslstats in FSL with the flag -R which gives me the maximum value. For Forceps major I get a value of 200, 20% of this value would be 40, so then in the path.pd.nii.gz image I thres

Re: [Freesurfer] Using TRACULA ROI for image in diffusionspace

2015-02-17 Thread Anastasia Yendiki
Hi Barbara Anne - In each tract's directory, you'll find the tract as a volumetric probability distribution in the file path.pd.nii.gz. You can use that as an ROI to extract statistics from any other volume that's in the same space as the tracts (native DWI space). To be consistent with the F

[Freesurfer] Using TRACULA ROI for image in diffusionspace

2015-02-16 Thread Barbara Kreilkamp
Dear TRACULA experts, I wonder if you could please assist me in extracting tract values from an image I transferred to diffusion space. I ran TRACULA on my DTI dataset, however from other structural images I aim to extract values for tracts as well. I also extracted DTI derived measures from the