[Freesurfer] Control point edits adversely affect cortical surfaces using FS 5.1

2012-10-10 Thread Vanessa Louise Cropley
Hi all, I have seen others post a similar problem on the freesurfer mailing list but I could not find a solution. When I edit a volume using control points, I am noticing that the use of CP edits adversely effects the wm/gm surfaces in the resulting re-processed image. Like others have reporte

Re: [Freesurfer] talairach.xfm error frequency

2012-10-10 Thread Eric Cunningham
Hi all, Ah, good to know that there is a Talairach accuracy problem. What have other groups been doing about this? Do you think it makes sense to manually edit much of our data? From what we've seen so far (registering to ages 3-9 so more errors expected) about 25% of our data have the registrat

Re: [Freesurfer] WM/GM boundary changes and control points

2012-10-10 Thread Bruce Fischl
If you upload the subject to our FTP site I will take a look Bruce On Oct 10, 2012, at 9:29 PM, EK Kim wrote: > Thank you for your answer. > I'm not sure I understand your question right, > but I just processed the file using following procedures. > 1. recon-all -autorecon1 -nuintensitycor-3T

Re: [Freesurfer] WM/GM boundary changes and control points

2012-10-10 Thread EK Kim
Thank you for your answer. I'm not sure I understand your question right, but I just processed the file using following procedures. 1. recon-all -autorecon1 -nuintensitycor-3T (because mine was 3T) 2. skullstripping brain mask using gcuts 3. adding control points (only on the left hemisphere) 4. re

Re: [Freesurfer] talairach.xfm error frequency

2012-10-10 Thread Bruce Fischl
I think 5.1 specifically has a problem with Talairach accuracy (is that right Nick?). Should be much better with the next release On Wed, 10 Oct 2012, Eric Cunningham wrote: Hi Bruce, I am running version 5.10 Thanks, -Eric On Wed, Oct 10, 2012 at 3:13 PM, Bruce Fischl wrote: Hi Eric

Re: [Freesurfer] talairach.xfm error frequency

2012-10-10 Thread Eric Cunningham
Hi Bruce, I am running version 5.10 Thanks, -Eric On Wed, Oct 10, 2012 at 3:13 PM, Bruce Fischl wrote: > Hi Eric > > what version are you running? > Bruce > > On Wed, 10 Oct 2012, Eric Cunningham wrote: > > Greetings, >> >> I am trying to determine how bad a talairach.xfm registration has to be

Re: [Freesurfer] talairach.xfm error frequency

2012-10-10 Thread Bruce Fischl
Hi Eric what version are you running? Bruce On Wed, 10 Oct 2012, Eric Cunningham wrote: Greetings, I am trying to determine how bad a talairach.xfm registration has to be to warrant a manual edit.  I have found that even minor edits can have noticable (9%) effects on major subcortical volumes

[Freesurfer] talairach.xfm error frequency

2012-10-10 Thread Eric Cunningham
Greetings, I am trying to determine how bad a talairach.xfm registration has to be to warrant a manual edit. I have found that even minor edits can have noticable (9%) effects on major subcortical volumes (such as thalamus or hippocampus). Very few registrations seem to have completely failed, b

Re: [Freesurfer] assembling data

2012-10-10 Thread Douglas N Greve
Hi Greg, you can do something like mri_concat --o lh.surf.mgh $SUBJECTS_DIR/*/surf/winkler.mgh doug On 10/10/2012 04:52 PM, Gregory Kirk wrote: > a have a bunch of data stored in the subj_id directories of the subjects for > convieniance but > it is already in the average surface space, but i w

[Freesurfer] assembling data

2012-10-10 Thread Gregory Kirk
a have a bunch of data stored in the subj_id directories of the subjects for convieniance but it is already in the average surface space, but i want to assemble it into one file so i can run the glm. mris_preproc --fsgd subset.fsgd --target subset_average --hemi lh --meas winkler.mgh --out lh.

Re: [Freesurfer] volumes per lobe

2012-10-10 Thread Douglas N Greve
Sorry, it was the first command that failed. Run these two commands, then the mris_anatomical_stats mri_annotation2label --subject vol17 --hemi lh --lobesStrict lobesfile mri_annotation2label --subject vol17 --hemi rh --lobesStrict lobesfile On 10/10/2012 12:24 PM, Carolina Valencia wrote: > Hi D

Re: [Freesurfer] mri_ms_fitparms?

2012-10-10 Thread Bruce Fischl
you need to register them. cheers Bruce On Wed, 10 Oct 2012, dgw wrote: > Hi, > >> From the wiki (http://www.freesurfer.net/fswiki/mri_ms_fitparms), I > can see that mri_ms_fitparms can accept and afi map. Can someone tell > me what assumptions the -afi subcommand makes about the position of > th

[Freesurfer] mri_ms_fitparms?

2012-10-10 Thread dgw
Hi, >From the wiki (http://www.freesurfer.net/fswiki/mri_ms_fitparms), I can see that mri_ms_fitparms can accept and afi map. Can someone tell me what assumptions the -afi subcommand makes about the position of the afi map relative to the flash volumes? does it calculate everything in scanner coor

[Freesurfer] (Ir?)Regular durations for recon-all -all

2012-10-10 Thread Denis-Alexander Engemann
Dear Freesurfers, presumably this is quite a newbie's question but I was wondering whether my recon-all times can be plausible if it takes less then 10 or 12 hours to perform the entire routine on a local machine. I'm using freesurfer 64 bit on Debian testing equipped with 16GB of RAM and Intel Co

Re: [Freesurfer] Freesurfer and FSL

2012-10-10 Thread Ana Arruda
Hello again, I'm sorry about all these questions. My analysis is being based on Morey et al. and I would like to know why do they not divide the study in left hippocampus and right hippocampus? Is it related with the type of comparison, once they are only worried about the comparison between meth

Re: [Freesurfer] volumes per lobe

2012-10-10 Thread Carolina Valencia
Hi Douglas, I've tried your suggestion, but I don't succeed, first I look for all the option of the command mris_anatomical_stats and I don't understand some of them, like the last word white and the -cortex option. If I finally succeed, where I can find the values? Can I visualize a colored brain

Re: [Freesurfer] Dimension Issues with mri_surf2surf

2012-10-10 Thread Douglas N Greve
Hi Aimi, this is not possible with nifti since 163842 > 32768 (2^15) which is the limit for nifti. It should have worked with mgh output and --noreshape. Can you confirm that it does not? doug On 10/10/2012 11:15 AM, Aimi Watanabe wrote: > Hello, > > My input to freesurfer is: > > mri_surf2sur

[Freesurfer] Dimension Issues with mri_surf2surf

2012-10-10 Thread Aimi Watanabe
Hello, My input to freesurfer is: mri_surf2surf --cortex --fwhm-src 5 --noreshape --hemi rh --tval [$output file] --sval [$input file] --srcsubject [$subject id] --trgsubject fsaverage --tfmt nii When I reopen the resulting image with Nibabel, the dimensions are 27307 x 1 x 6 x 296. While 296

Re: [Freesurfer] hippocampal segmentation

2012-10-10 Thread Bruce Fischl
Hi Hugh, no attachments came through. Do you mean the segmentation of the hippocampus in the aseg? What version are you running? cheers Bruce On Wed, 10 Oct 2012, Hugh Pemberton wrote: > Dear freesurfer crew, > I'm having a few issues with segmentation around the hippocampus, I have > included

Re: [Freesurfer] WM/GM boundary changes and control points

2012-10-10 Thread Bruce Fischl
what was the name of the file that you transferred? On Wed, 10 Oct 2012, EK Kim wrote: I already uploaded this problem 2 days ago, reprocessing the subject to make sure about control points. However when I added the control points to the left hemisphere, the right hemisphere surface was change

[Freesurfer] PhD position available – Cognitive Neuroimaging of Language and Audition

2012-10-10 Thread Narly GOLESTANI
Dear all, Applications are invited for a PhD in the newly established ‘Brain and Language Lab’ at the University of Geneva in Switzerland, under the supervision of Narly Golestani. Projects will include using functional MRI (fMRI), structural MRI (sMRI), diffusion tensor imaging (DTI) and ele