Freesurfer July 2009

freesurfer@nmr.mgh.harvard.edu

85 participants
135 discussions

Skip steps for only parcellation and segmentation?
by Renske de Boer 15 Jul '09

15 Jul '09

Hi, I want to run FreeSurfer on a large number of subjects, so I must reduce run time as much as possible. I'm only interested in the parcellation of the cortex and the subcortical segmentation. Are there any (timeconsuming) processing steps I can skip since I'm not interested in e.g. surfaces? Or is every step required to obtain the parcellation and segmentation? And if I only want the cortical parcellation? Thanks! Renske -- _____________________________________ Ms. Renske de Boer, MSc Biomedical Imaging Group Rotterdam Erasmus MC, University Medical Center Rotterdam, the Netherlands www.bigr.nl ______________________________________

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fsaverage flatmap
by Stephan Gerhard 15 Jul '09

15 Jul '09

Hi! I tried to convert the fsaverage rh.cortex.patch.flat to gifti with mris_convert lh.cortex.patch.flat lh.cortex.patch.flat.gii but gives me the error MRISalloc(16711682, 392): could not allocate vertices Cannot allocate memory Same error, when I want to load it in tksurfer with tksurfer fsaverage lh cortex.patch.flat I've got 4GB RAM, this should be enough. In the end, I'd like to display the flat map with an atlas overlayed. So, the number of vertices has to correspond to the number of vertices e.g. in lh.white, correct? Stephen

2 3

making subject directory
by Barnali Basu 15 Jul '09

15 Jul '09

Experts I am stuck up with a real basic issue, which I have done easily manytimes in the older version. I have downloaded and installed the stable v4.4.0 version . I am trying to create a new subject directory, but its throwing the error cd subjects barnali-work:/usr/local/freesurfer/subjects> mksubjdirs ja mkdir: cannot create directory `ja': Permission denied ERROR: creating directory ja I tried doing chmod 755 from root, it says operation not possible. Where am I going wrong Thanks -- Barnali Basu Cell : 425 638 2936 Home: 206 257 0174

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pial surface edits
by Devdutta W 15 Jul '09

15 Jul '09

Hi,I have been trying to figure out how to get freesurfer to select more of the grey matter than it does after running recon-all with autorecon2 option. I feel that there are portions of the grey matter in some of our images that are not being selected as indicated by the red outline of the pial matter. Is it possible to do that? I appreciate any help in this matter. Regards, Devdutta

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window refresh problem with freesurfer v4.4.0
by yzhangd＠artsci.wustl.edu 14 Jul '09

14 Jul '09

Hi,everyone I just installed the latest version of freesurfer. During the testing phase of the install, when 2 freesurfer windows are open (i.e. tkmedit bert orig.mgz and tksurfer bert rh pial) the first does not refresh. In fact the active 2nd window must be closed and the first must be refreshed with the 'refresh' button on the GUI. In fact, if you have a freesurfer window open (i.e. tksurfer bert rh pial), and then open a system terminal window that overlays this freesurfer window, the freesurfer window does not refresh either. Any ideas what is going on? thanx Our system/software specifics are below: New DELL PC (Precision T3400) with NVIDIA card, and dual boot linux/WinXP. Linux 2.6.9-78.0.22.ELsmp #1 SMP Thu Apr 30 19:17:40 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux Freesurfer Version = freesurfer-Linux-centos4_x86_64-stable-pub-v4.4.0 Windows System = GNOME Yuning Zhang 4525 scott ave, medical school,Washington University in St.Louis,63110 Phone:314-362-1219 email:yzhangd@artsci.wustl.edu

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Aparc Stats & Different versions of Freesurfer
by Sherri Novis 14 Jul '09

14 Jul '09

Hello - I am comparing aparc stats across several groups of data, and just noticed that recently processed groups do not have corpus callosum values... which made me wonder if different versions of freesurfer will produce different aparc data... Can aparc stats from an older version of freesurfer be compared to aparc stats from a more recent version? Or do they all have to be processed with the same version? Also - we noticed that the aparc areas do not extract in the same order... is this also because of the different version used to process the data? Thanks much, Sherri

2 1

co-registration problem between single subject and fsaverage space
by leemon albert 14 Jul '09

14 Jul '09

Dear FreeSurfer Community... 1. For QDEC analysis, we have pre-computed smoothed data for the target fsaverage surface using the command: recon-all -s <subjid> -qcache. then we obtained 'lh.thickness.fsaverage.asc ' using mris_convert. The procedure is here mris_convert -c ./lh.thickness.fsaverage.mgh \ $SUBJECTS_DIR/fsaverage/surf/lh.white \ lh.thickness.fsaverage.asc Finally, we read the 'lh.thickness.fsaverage.asc ' in matlab using read_asc.m and met the following error. [S, v, f] = read_asc('/usr/local/freesurfer/subjects/lh.thickness.fsaverage.asc'); ??? Error using ==> fscanf Invalid size. Error in ==> read_asc at 45 f = fscanf(fp, '%d', S(3)*5); How to fix this problem? 2. In fact, I want to use BA Labels ( http://surfer.nmr.mgh.harvard.edu/fswiki/BrodmannAreaMaps) to extract the thickness of visual area. And am I right in assuming that the contents of this file, are my thickness stats of my subject after being aligned to fsaverage space, and that each line is in the correct order that corresponds to each vertex in fsaverage/surf/lh.{pial,white} ? 3. What is the best approach to co-register a single subject to fsaverage space and for the results to have identical number of vertices and faces as fsaverage? Any help would be appreciated. Thanks -- Albert Lab of Complex System and Artificial Intelligence, Institute of Automation,Chinese Academy of Sciences(CASIA) Beijing, 100190,P.R.CHINA

1 0

asegstats2tabel, ICV
by Rosa Steimke 14 Jul '09

14 Jul '09

HI freesurfer experts! i want to correct for intercranial volume in my qdec analysis. To do that I want to generate a file in which the intracranial volume of each subject is listed. do i have to use the asegstats2tabel command? I tried it and it gave me following error message: asegstats2table --subjects 1 2 4 5 6 7 8 9 10 11 12 13 14 15 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 41 42 43 45 47 48 --meas volume --tablefile aseg_stats.txt Traceback (most recent call last): File "/Applications/freesurfer/bin/asegstats2table", line 6, in <module> import fsutils ImportError: No module named fsutils [admins-imac:~/Rosa_MRTs] steimke% asegstats2table --subjects 1 2 4 5 6 7 8 9 10 11 12 13 14 15 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 41 42 43 45 47 48 Traceback (most recent call last): File "/Applications/freesurfer/bin/asegstats2table", line 6, in <module> import fsutils ImportError: No module named fsutils what did i do wrong? is this the right approach to get a ICV file? thanks in advance!!! Rosa Rosa Steimke Student Master of Neuroscience Vrije Universiteit Amsterdam Netherlands -- Neu: GMX Doppel-FLAT mit Internet-Flatrate + Telefon-Flatrate für nur 19,99 Euro/mtl.!* http://portal.gmx.net/de/go/dsl02

3 2

autorecon2-error
by whblqh＠mail.ustc.edu.cn 14 Jul '09

14 Jul '09

Hello,freesurfer experts I test freesurfer on my computer and command "recon-all -s bert -autorecon2",but there were some errors,as follows: > ......... > #-------------------------------------------- > #@# Cortical ribbon mask Mon Jul 13 02:59:19 CST 2009 > /home/whb/soft/freesurfer/subjects/bert/mri > > mris_volmask --label_left_white 2 --label_left_ribbon 3 --label_right_white 41 > --label_right_ribbon 42 --save_ribbon --save_distance bert > > mris_volmask.bin: error while loading shared libraries: > /home/whb/soft/freesurfer/lib/vtk/lib/vtk-5.2/libvtkRendering.so.5.2: cannot > restore segment prot after reloc: Permission denied > Linux localhost.localdomain 2.6.21-1.3194.fc7 #1 SMP Wed May 23 22:35:01 EDT 2007 > i686 i686 i386 GNU/Linux > > recon-all exited with ERRORS at Mon Jul 13 02:59:20 CST 2009 > > I don't know what's the reason. would you like to help me£¿ > > Thanks in advance. > > > Hai-bao Wang > > Jul-14, 2009 > > >

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Re: [Freesurfer] mri_convert
by Feng-Xian 14 Jul '09

14 Jul '09

Hi, Thank you for your response. I want to make sure the command as follows. If I want to obtain the thickness ascii with Tal coordinate, can the following commands make I to obtain? First, I change the coordinate from Freesurfer to Tal using the command. mris_convert –t subjid lh.pial lh.pial.tal Then, I obtain the thickness ascii with Tal coordinate from the following command. mris_convert -c lh.thickness lh.pial.tal lh.thickness.asc Finally, I want to check whether the coordinate is true or not. So I open tksurfer to check. But, I found the vertex Tal coordinate of lh.thickness.asc is different from the shows of terminal. Have something wrong of these commands? Thank you in advance! Feng-Xian On Mon, 19 Jan 2009 10:01:21 -0500 (EST), Bruce Fischl wrote > read the mris_convert help. You can convert the surfaces to ascii as > well > (e.g. mris_convert lh.white lh.white.asc) > > cheers > Bruce > On Mon, 19 Jan 2009, Feng-Xian > wrote: > > > > > Hi Bruce > > Thanks for your answer. But I really want to get the result of surfaces > > on FreeSurfer and I would like to read these surfaces (e.g. lh inflated, lh > > thickness) on Windows XP. > > > > Would you teach me how can I get these? > > > > Thanks in advance! > > Feng-Xian > > > > > > > > On Mon, 19 Jan 2009 09:05:59 -0500 (EST), Bruce Fischl wrote > >> Hi Feng-Xian, > >> > >> mri_convert only works on volumes, and to convert e.g. the orig.mgz > >> volume to nifti use: > >> > >> mri_convert orig.mgz orig.nii > >> > >> cheers, > >> Bruce > >> > >> On Mon, 19 > >> Jan 2009, Feng-Xian wrote: > >> > >>> > >>> Hi, > >>> I am finished to run my subjects using recon-all and I would like to > > know > >>> the usage of mri_convert to convert the results of FreeSurfer into the > >>> analyze format or nifti. > >>> > >>> Some of the results of FreeSurfer are volumes (e.g. brainmask.mgz) and > > some > >>> of them are surfaces (e.g. lh inflated). > >>> > >>> What can I do to convert these formats to analysis format or nifti? > >>> > >>> Thanks in advance! > >>> Feng-Xian > >>> > >>> ------------------------------------------------- > >>> Chang Gung University Mail Server Web Mail system > >>> By Chang-Gung University Information Center > >>> (http://www.cgu.edu.tw/ic/) > >>> > >>> _______________________________________________ > >>> Freesurfer mailing list > >>> Freesurfer(a)nmr.mgh.harvard.edu > >>> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > >>> > >>> > >>> > > > > > > ------------------------------------------------- > > Chang Gung University Mail Server Web Mail system > > By Chang-Gung University Information Center > > (http://www.cgu.edu.tw/ic/) > > > > > > ------------------------------------------------- Chang Gung University Mail Server Web Mail system By Chang-Gung University Information Center (http://www.cgu.edu.tw/ic/)

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Freesurfer July 2009