Freesurfer

freesurfer@nmr.mgh.harvard.edu

18 participants
30131 discussions

monte-carlo simulation question
by Prapti Gautam 02 Jul '09

02 Jul '09

Dear Freesurfers, I ran a monte carlo simulation for thickness analyses using mri_glmfit and found new files in the contrast subdirectory. I was able to figure out what the first two represent, but was wondering if any one could clarify what information the rest of the files show: mc-z.negative.sig.cluster.summary : cluster summaries mc-z.negative.sig.ocn.annot : annotation of clusters mc-z.negative.sig.cluster.mgh : mc-z.negative.sig.ocn.mgh : mc-z.negative.sig.voxel.mgh : Thanks very much for your help, Prapti

2 1

Brain segmentation stats
by Jared Price 01 Jul '09

01 Jul '09

Gurus, Looking over some stats recently I noticed that if you add up all of the freesurfer stats for ventricles, namely the left and right lateral ventricles plus 3rd, 4th, and 5th ventricles and subtract that from the "Number of Brain Segmentation Voxels" stat, you do not get the value of the "Brain Segmentation Volume Without Ventricles" stat. Anyone know why?

2 1

Freesurfer FSL Dimensions
by Natalia Sanchez 01 Jul '09

01 Jul '09

Hi: I am using Freesurfer and FSL together. My image dimensions initially are 256x256x128 in nii.gz format. I convert these images to .mgz using mri_convert and do cortical and subcoritcal segmentation in FreeSurfer. The outputs of the segmentation are the converted back into .nii.gz so I can use them in FSL, however, the dimensions of the Freesurfer outputs don't match with the FSL files. The freesurfer outputs are 256x256x256. Is there a way I can downsample this outputs to use them in FSL? Thanks!

2 1

mri_glmfit error
by Susie Heo 01 Jul '09

01 Jul '09

Hello, I am trying to run a cortical thickness analysis to look for an interaction between two continuous variables using mri_glmfit. I created an fsgd file including only the two original CVs to investigate main effects and obtained the output. When I added the interaction term (product of the two CVs) as a third continuous variable in my fsgd file and tried to run a dods analysis, I received the message: "ERROR: matrix is ill-conditioned or badly scaled." I don't understand how this could be the case. Is there a simple way to check whether my design matrix is ill-conditioned? Susie

2 1

mkbrainmask not finding fslmaths
by dahlia＠nmr.mgh.harvard.edu 01 Jul '09

01 Jul '09

Hi, I ran the following preproc-sess command and mkbrainmask-sess failed, with an error message of not finding fsmaths. I don't know where to be looking for this file and what previous command should have generated it. Can anyone help me out? Thanks! Dahlia. I ran: preproc-sess -sf sessid_subj31.txt -df sesspar -fwhm 5 The error message was: ERROR: cannot find either fslmaths for avwmaths ERROR: mkbrainmask failed ERROR: mkbrainmask-sess failed mkbrainmask-sess.log says: mkbrainmask-sess $Id: mkbrainmask-sess,v 1.12.2.1 2008/10/02 21:56:15 greve Exp $ Linux mbc.stanford.edu 2.6.22.9-61.fc6 #1 SMP Thu Sep 27 18:07:59 EDT 2007 x86_64 x86_64 x86_64 GNU/Linux Tue Jun 30 11:01:46 PDT 2009 /home/dahlia.sharon/functionals/fba_study_mtloc -maskstem brain -fsd bold -s mtloc_19may07 -d /home/dahlia.sharon/functionals/subj31 -update This is the command preproc-sess invoked: mkbrainmask -i 025/f.bhdr -o masks/brain.nii -thresh 0.1 -ndil 1 -nerode 0 The data is not on the network so I can't give paths.

2 2

Multiple Comparison - Clusterwise Correction
by Devdutta W 01 Jul '09

01 Jul '09

Hi Freesurfers, More questions about this analysis. 1) Referring to the documentation, we used the following command: tksurfer fsaverage lh inflated -annot mc-z.abs.2.sig.ocn.annot -fthresh 2 -curv -gray The documentation says we should see an image as shown in Figure 1 (attached). But what we see is Figure 2 (also attached). Can somebody explain this? 2) When running the simulation does it matter what threshold we use? For example, can we use a threshold of 2 or 3 (instead of 4 as shown in documentation) when running mri_glmfit-sim? And do we have to use the same threshold while displaying the clusters after? Thanks for any help. Devdutta

4 14

standardize in asegstata2table
by Anita di Iasio 01 Jul '09

01 Jul '09

Hi all, I have a question. In the table created from asegstats2table, are the volumes standardized to Talairach space? or are they in their orig space? thank in advanced, anita

3 2

Cannot allocate memory / can't allocate region
by Jürgen Hänggi 01 Jul '09

01 Jul '09

Dear FS experts I am using high resolution (0.75x0.75x0.75 mm) data within FS but the following error occurred: ....... vertex spacing 0.69 +- 0.21 (0.00-->6.06) (max @ vno 265258 --> 114262) face area 0.19 +- 0.10 (0.00-->4.49) mris_make_surfaces(49536) malloc: *** mmap(size=1355776) failed (error code=12) *** error: can't allocate region *** set a breakpoint in malloc_error_break to debug MRIalloc(937, 361, 612): could not allocate 1353028 bytes for 356th slice 000: dt: 0.0000, sse=4822516.5, rms=2.25 rms = 2.94, time step reduction 1 of 3 to 0.250... 043: dt: 0.2500, sse=4898456.5, rms=1.89 rms = 1.86, time step reduction 2 of 3 to 0.125... 044: dt: 0.2500, sse=5293477.5, rms=1.86 045: dt: 0.1250, sse=5277681.5, rms=1.76 046: dt: 0.1250, sse=5237215.5, rms=1.70 rms = 1.69, time step reduction 3 of 3 to 0.062... 047: dt: 0.1250, sse=5270459.0, rms=1.69 positioning took 16.1 minutes inhibiting deformation at non-cortical midline structures... correcting aseg with surfaces... Cannot allocate memory Darwin juergen-haenggis-mac-pro.local 9.7.0 Darwin Kernel Version 9.7.0: Tue Mar 31 22:52:17 PDT 2009; root:xnu-1228.12.14~1/RELEASE_I386 i386 recon-all exited with ERRORS at Wed Jul 1 04:20:34 CEST 2009 [juergen-haenggis-mac-pro:subjects/roman_p_highres_div100/mri] I am using FS 4.4, Mac OSX 10.5, 8 GB RAM, memoryuse unlimited, descriptors 8192 The process terminated before all RAM is active and no swap is used. Any idea? Thanks in advance Regards Jürgen ---------------------------------------------------------------------------- Juergen Haenggi Ph.D. (Dr. des.) Division Neuropsychology Institute of Psychology University of Zurich Binzmuehlestrasse 14, PO Box 25 8050 Zurich, Switzerland 0041 44 635 73 97 (phone office) 0041 76 445 86 84 (phone mobile) 0041 44 635 74 09 (fax office) BIN 4.D.04 (office room number) j.haenggi[at]psychologie.uzh.ch (email) http://www.psychologie.uzh.ch/neuropsy/ (website) http://www.juergenhaenggi.ch (private website) This e-mail (and any attachment/s) contains confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and destroy this e-mail. Any unauthorised copying, disclosure or distribution of the material in this e-mail is strictly forbidden. ----------------------------------------------------------------------------

2 1

RES: [Freesurfer] Cannot allocate memory / can't allocate region
by ppj＠netfilter.com.br 01 Jul '09

01 Jul '09

Check ulimit -m That's the max mem per process. ulimit -m 0 Maybe will help. -- Pedro Paulo Jr E71 Nokia -----Msg original----- De: Jürgen Hänggi Enviada: 01/07/2009 02:36:36 Para: Freesurfer Mailinglist Assunto: [Freesurfer] Cannot allocate memory / can't allocate region Dear FS experts I am using high resolution (0.75x0.75x0.75 mm) data within FS but the following error occurred: ....... vertex spacing 0.69 +- 0.21 (0.00-->6.06) (max @ vno 265258 --> 114262) face area 0.19 +- 0.10 (0.00-->4.49) mris_make_surfaces(49536) malloc: *** mmap(size=1355776) failed (error code=12) *** error: can't allocate region *** set a breakpoint in malloc_error_break to debug MRIalloc(937, 361, 612): could not allocate 1353028 bytes for 356th slice 000: dt: 0.0000, sse=4822516.5, rms=2.25 rms = 2.94, time step reduction 1 of 3 to 0.250... 043: dt: 0.2500, sse=4898456.5, rms=1.89 rms = 1.86, time step reduction 2 of 3 to 0.125... 044: dt: 0.2500, sse=5293477.5, rms=1.86 045: dt: 0.1250, sse=5277681.5, rms=1.76 046: dt: 0.1250, sse=5237215.5, rms=1.70 rms = 1.69, time step reduction 3 of 3 to 0.062... 047: dt: 0.1250, sse=5270459.0, rms=1.69 positioning took 16.1 minutes inhibiting deformation at non-cortical midline structures... correcting aseg with surfaces... Cannot allocate memory Darwin juergen-haenggis-mac-pro.local 9.7.0 Darwin Kernel Version 9.7.0: Tue Mar 31 22:52:17 PDT 2009; root:xnu-1228.12.14~1/RELEASE_I386 i386 recon-all exited with ERRORS at Wed Jul 1 04:20:34 CEST 2009 [juergen-haenggis-mac-pro:subjects/roman_p_highres_div100/mri] I am using FS 4.4, Mac OSX 10.5, 8 GB RAM, memoryuse unlimited, descriptors 8192 The process terminated before all RAM is active and no swap is used. Any idea? Thanks in advance Regards Jürgen ---------------------------------------------------------------------------- Juergen Haenggi Ph.D. (Dr. des.) Division Neuropsychology Institute of Psychology University of Zurich Binzmuehlestrasse 14, PO Box 25 8050 Zurich, Switzerland 0041 44 635 73 97 (phone office) 0041 76 445 86 84 (phone mobile) 0041 44 635 74 09 (fax office) BIN 4.D.04 (office room number) j.haenggi[at]psychologie.uzh.ch (email) http://www.psychologie.uzh.ch/neuropsy/ (website) http://www.juergenhaenggi.ch (private website) This e-mail (and any attachment/s) contains confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and destroy this e-mail. Any unauthorised copying, disclosure or distribution of the material in this e-mail is strictly forbidden. ---------------------------------------------------------------------------- _______________________________________________ Freesurfer mailing list Freesurfer(a)nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer

1 0

MNI/Startup.PM error in FreeSurfer 4.4.0
by Matthew Koh 30 Jun '09

30 Jun '09

Hello. I just installed FreeSurfer v4.4.0, following all the directions to the letter. When I run recon-all -i <input-file> -s <subject> -autorecon1, I get the following error: Can't locate MNI/Startup.pm in @INC (@INC contains: /System/Library/Perl/5.8.6/darwin-thread-multi-2level /System/Library/Perl/5.8.6 /Library/Perl/5.8.6/darwin-thread-multi-2level /Library/Perl/5.8.6 /Library/Perl /Network/Library/Perl/5.8.6/darwin-thread-multi-2level /Network/Library/Perl/5.8.6 /Network/Library/Perl /System/Library/Perl/Extras/5.8.6/darwin-thread-multi-2level /System/Library/Perl/Extras/5.8.6 /Library/Perl/5.8.1 .) at /Applications/freesurfer/mni/bin/nu_correct line 37. If it matters, the value of $PERL5LIB is: /Applications/freesurfer/mni/lib/../System/Library/Perl/5.8.6 and I'm working in OS X 10.4.11 on a PowerPC. Anyone have any ideas?

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