[Freesurfer] (no subject)

2012-05-29 Thread Kathryn I. Alpert
Dear Freesufer experts, I am wondering if it is possible to tell mri_vol2surf to ignore certain voxels in the src volume, for instance, by setting their intensity to -999. I'm trying to project only gray matter voxels from a PET scan onto the fsaverage surface, but when I use an only-GM PET image

Re: [Freesurfer] read_surf - update

2012-05-29 Thread Bruce Fischl
Sorry, I guess it got out of date. We don't it much Bruce On May 29, 2012, at 9:12 PM, Shay Ohayon wrote: > Hi again, > > OK. I managed to reverse engineer things back from mri_tessalate.c > Here is the code snippet that should be added to read_surf to parse these new > files: > NEW_QUAD_FIL

[Freesurfer] read_surf - update

2012-05-29 Thread Shay Ohayon
Hi again, OK. I managed to reverse engineer things back from mri_tessalate.c Here is the code snippet that should be added to read_surf to parse these new files: NEW_QUAD_FILE_MAGIC_NUMBER =16777213; elseif (magic == NEW_QUAD_FILE_MAGIC_NUMBER) vnum = fread3(fid); fnum = fread3(fid); vertex

[Freesurfer] read_surf and free surfer 5.0

2012-05-29 Thread Shay Ohayon
Hi, I am trying to read a surface generated by mri_tessellate using matlab's API (read_surf.m) However, it seems like the function is not up-to-date, because the magic number in the surface file is 16777213, and the two magic-numbers recognized by read_surf are 16777214 and 16777215. Is there a n

Re: [Freesurfer] fMRI time series in surface space

2012-05-29 Thread Douglas Greve
It's no longer in the volume, it is on the surface. It should have as many voxels as there are vertices in the surface On 5/29/12 5:55 PM, Kushal Kapse wrote: > hi doug/freesurfer users > > > after doing mri_vol2surf.i went and imported the files in matlab by using > f=MRIread ('filename.mgh

Re: [Freesurfer] fMRI time series in surface space

2012-05-29 Thread Kushal Kapse
hi doug/freesurfer users after doing mri_vol2surf.i went and imported the files in matlab by using f=MRIread ('filename.mgh') for the original functional (func.nii) file and spm001lh.mgh file...it seems the original func files has nvoxels=204800 and spm001lh file has nvolxels=118234.fo

Re: [Freesurfer] [martinos-tech] checking talairach registration

2012-05-29 Thread Douglas N Greve
Hi Suzanne, it does not mean that there is anything wrong with your data. I've seen this before on some data sets. I have a work-around that might work. How many data sets do you have to run? doug On 05/29/2012 02:35 PM, suzanne oosterwijk wrote: > > Hi, > > Recently I ran recon1 for several par

[Freesurfer] wmparc

2012-05-29 Thread Christopher Bell
How much is the dilation (perpendicular to the cortical surface) for the creation of the white matter ROIs? Is there a citation for this? Chris Bell ___ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listi

Re: [Freesurfer] fMRI time series in surface space

2012-05-29 Thread Kushal Kapse
hi doug, now it works finei can check the activations of a particular condition on surfacethanks for all you help kk - Original Message - From: "Douglas Greve" To: "Kushal Kapse" Cc: freesurfer@nmr.mgh.harvard.edu Sent: Tuesday, May 29, 2012 9:29:50 AM Subject: Re: [Freesurfer

Re: [Freesurfer] fMRI time series in surface space

2012-05-29 Thread Douglas Greve
tksurfer subjectname lh inflated -overlay spm001.mgh You can then scroll through the different time points with the overlay configuration On 5/29/12 9:35 AM, Kushal Kapse wrote: > so if i have output as .mgh filehow can i check the output on surface...i > try tksurfer and it just shows in

Re: [Freesurfer] fMRI time series in surface space

2012-05-29 Thread Kushal Kapse
so if i have output as .mgh filehow can i check the output on surface...i try tksurfer and it just shows inflated surfacethe qsurfer doesnt load coz it keeps looking for .w file format...is there any change in commands to make so that i can visualize the output of functionaltosurface

Re: [Freesurfer] fMRI time series in surface space

2012-05-29 Thread Douglas Greve
it does not produce a .w file the output is spm001.mgh On 5/29/12 9:00 AM, Kushal Kapse wrote: > hi doug/bruce: > > it still says it cannot find .w fileplease check at the bottom > > [kkapse@dendrite 15546_03908]$ /home/kkapse/mri_vol2surf.linux --src > func.nii.gz --reg register.dat --h

Re: [Freesurfer] fMRI time series in surface space

2012-05-29 Thread Kushal Kapse
hi doug/bruce: it still says it cannot find .w fileplease check at the bottom [kkapse@dendrite 15546_03908]$ /home/kkapse/mri_vol2surf.linux --src func.nii.gz --reg register.dat --hemi rh --out spm001.mgh srcvol = func.nii.gz srcreg = register.dat srcregold = 0 srcwarp unspecified surf

Re: [Freesurfer] fMRI time series in surface space

2012-05-29 Thread Douglas Greve
Hi Kushal, you cannot use .w file for 4D outputs. Use this cmd: mri_vol2surf.linux --src func.nii.gz --reg register.dat --hemi lh --out spm001.mgh doug On 5/29/12 8:46 AM, Kushal Kapse wrote: > hi doug, > > as per our last conversation of 4d time series on surface, i did mri_vol2surf > as p

Re: [Freesurfer] fMRI time series in surface space

2012-05-29 Thread Bruce Fischl
can you tell us what you mean when you say "the output doesn't work", and how you checked the output on the surface? If you specify mgz as the output format make sure the --out file name ends in .mgz cheers Bruce On Tue, 29 May 2012, Kushal Kapse wrote: > hi doug, > > as per our last conversat

Re: [Freesurfer] fMRI time series in surface space

2012-05-29 Thread Kushal Kapse
hi doug, as per our last conversation of 4d time series on surface, i did mri_vol2surf as per tutorial on wiki..i used the new mri_vol2surf which u send methis was my command: mri_vol2surf.linux --src func.nii.gz --reg register.dat --hemi lh --out spm001-lh.w --out_type paint but i cant

Re: [Freesurfer] Does the fsaverage template belong to MNI space or Talairach space

2012-05-29 Thread Douglas Greve
MNI305 space doug On 5/29/12 2:29 AM, ZhiLiangLong wrote: Hi all: In FS, does the fsaverage template belong to MNI space or Talairach space? Thanks! ___ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu