Re: [Freesurfer] Doubts about GLM contrasts

2023-11-15 Thread Douglas N. Greve
Yes, that looks right (assuming that cortisol is your first variable) On 11/7/2023 3:49 PM, Laura Willers de Souza wrote: External Email - Use Caution Hello FreeSurfer Developers, Following the FSGD examples on the website, I built the following test: Question: Is there an

Re: [Freesurfer] Problem with brainstem overlap after BBR

2023-11-15 Thread Douglas N. Greve
Several things - don't use --init-fsl. If you don't specify, then it will use mri_coreg, which will work better. You can also try --init-header - your movable scan appears to be t2 weighted, so use --t2 instead of --t1 - look at the cost file (or send it). It is hard to say what the cost

Re: [Freesurfer] mri_cvs_register failure

2023-11-15 Thread Douglas N. Greve
You can map the curvature from fsaverage to the individual (or reverse) and then load both on the surface to see if they agree. I think that CVS will/can save intermediate registrations, so you might check those to see if the problem is cropping up at a particular step. On 11/9/2023 8:18 AM,

Re: [Freesurfer] ANTs denoising

2023-11-15 Thread Douglas N. Greve
ANTs denoising is not used by default. Ants N4 is used to crfeate nu.mgz On 11/6/2023 11:46 AM, Alexopoulos, Dimitrios wrote: External Email - Use Caution To which anatomical volume is ANTs denoising applied to for generating the orig surface? We do ANTS denoising to the input T1

Re: [Freesurfer] [WARNING: ATTACHMENT UNSCANNED]mri_label2label with Gifti file

2023-11-15 Thread P Pieperhoff
External Email - Use Caution Hi Yujing, thanks a lot for your reply. It worked perfectly. I used the following command: mri_surf2surf --sd --srcsubject fsaverage --trgsubject CON01 --hemi lh --sval-annot input_atlas.gii --tval output_atlas.gii Maybe it would be good to give

Re: [Freesurfer] Create an lta or xfm file for mri_vol2vol

2023-11-15 Thread Douglas N. Greve
You have to know the coordinate system of the matrix. See, eg, here https://surfer.nmr.mgh.harvard.edu/fswiki/CoordinateSystems Once you know the coordinate system, I would use lta_convert to generate an appropriate file, eg, lta_convert --inlta identity.nofile --src preop.mgz   --trg postop.mgz 

Re: [Freesurfer] Mapping input volume (fa.nii) to hippocampus segmentation volume

2023-11-15 Thread Douglas N. Greve
Can you run it with --debug as the first option and send the resulting terminal output? On 11/9/2023 12:54 PM, Mirsol Choi wrote: External Email - Use Caution Hello Freesurfers, I am trying to segment the hippocampus into its subfields and take the FA values from each subfield

Re: [Freesurfer] "error: MatrixReadTxT: could not scan value [1][1] ERROR: loading C Path_to_contrast"

2023-11-15 Thread Douglas N. Greve
Can you send /data/Ghana_MRI_Data_lmid/StructT1/subjDir_FS_GHANA/Contrasts/GM_FM_ONE_minus_ZERO.mtx ? How did you create this file? A lot of word processors will add special characters that can cause a read failure. On 11/9/2023 12:33 PM, Ludmila Midrigan wrote: External Email - Use

[Freesurfer] Does Synthseg include longitudinal processing?

2023-11-15 Thread STACEY M SCHAEFER
External Email - Use Caution Hello, We are in the midst of longitudinal data collection. Before diving into our first longitudinal structural processing, have a few questions: Does Synthseg include a longitudinal processing stream? If so, how does it compare to the Freesurfer