[Freesurfer] Dynamic PET _ Time frame averaging

Dear Freesurfer community, Just a simple question : is there a command-line that allows averaging voxel values from different time frames, transforming dynamic 4D volume into a static 3D volume ? mri_convert allows to skip some early frames (--nskip) or drop some at the end (--ndrop), but I don

[Freesurfer] volumes per lobe

Hi FS users and developers, I need to obtain the volume per lobe (occipital, parietal, temporal, frontal) in a particular subjects and if it is possible divided by gray and white matter. I found similar topics in the mailing list, but I don't succeed to get this values. I follow the instructions f

Re: [Freesurfer] tracula question

Hola Fernando - Please send questions about tracula to the freesurfer list and not me personally, so that all users may benefit. This issue will be resolved in the next version. For now, if you're on a unix system that doesn't have the jot command, you'll just have to specify the runlist in

Re: [Freesurfer] Dynamic PET _ Time frame averaging

Hi Christopher, try mri_concat 4dvolume.nii --mean --o 3dvolume.nii doug On 10/05/2012 03:05 AM, Christopher Coello wrote: > Dear Freesurfer community, > > Just a simple question : is there a command-line that allows averaging > voxel values from different time frames, transforming dynamic 4D volu

[Freesurfer] Import/export out of curry

Has anyone used freesurfer segmentations/labels in Curry? -- Souheil Inati, PhD Staff Scientist Functional MRI Facility NIMH/NIH/DHHS souheil.in...@nih.gov ___ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/

Re: [Freesurfer] long_mris_slopes error

Hello Martin, everything works fine with the newer versions of files. Thanks for the help! Have a wonderful day ! Alex. Le 04/10/2012 8:04 PM, Martin Reuter a écrit : You need a newer version of glmfit. This is not the 5.1 I think. Best Martin Alex Hanganu wrote: Hello Martin,

[Freesurfer] Controlling for age and sex in Qdec?

Dear freesurfer experts, I'm using Qdec and I want to control for age (a continuous variable) and sex (f,m or 1,0). Do I need to center age (i.e., subtract the score from its mean) before I select it as a nuisance factor? Do I need to center sex? I found that selecting age_centered as a nuisan

[Freesurfer] transfer label from high-resolution mesh to low resolution mesh

Hi, all I am trying to transfer some labels on a high-resolution white surface mesh (~100K) to a corresponding low-resolution white mesh(~10K) that is generated using FS function "mris_decimate". Could someone tell me what is the most efficient way to realize that? Many thanks in advance! Long

[Freesurfer] I want to know a simple thing in tksurfer

I'm using 'freesurfer-Linux-centos4_x86_64-stable-pub-v5.1.0' and I have a problem. I used a command 'tksurfer fsaverage lh inflated -ov surfdata' on teminal. Then, I used 'configure overlay display' in veiw>configure>overlay to set proper threshold. I could set approximate threshold values easi