Freesurfer June 2018

freesurfer@nmr.mgh.harvard.edu

105 participants
154 discussions

Morphing Buckner2011 MNI152 to subject's space {Disarmed}
by Peled, Noam 05 Oct '18

05 Oct '18

Dear group, I'm trying to morph the Buckner2011<http://www.freesurfer.net/fswiki/CerebellumParcellation_Buckner2011> cerebellum segmentation map from MNI152 to subject's space: mri_vol2vol --mov subjects/sub01/mri/norm.mgz --s sub01 --targ Buckner2011_17Networks_MNI152_FreeSurferConformed1mm_LooseMask.nii.gz --m3z talairach.m3z --o sub01_Buckner2011_atlas_17_loose.nii.gz --nearest --inv-morph It worked with the 17 networks, but didn't work with the 7 networks version. Any ideas? This is really strange. Thanks, Noam

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freeview problem on Linux RHEL 7-4 libGLU.so.1
by Avner Meoded 01 Oct '18

01 Oct '18

Hello all, I installed the latest version for Linux I get this message when trying to run an example: "freeview.bin: error while loading shared libraries: libGLU.so.1: cannot open shared object file: No such file or directory" I installed the missing library and now it is in /usr/local/fsl/bin/FSLeyes/libGLU.so.1 any idea ho to solve this problem Thanks avner

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FreeSurfer 6.0.0 CentOS 7 compatibility
by Vanzo, Davide 25 Sep '18

25 Sep '18

Hello, According from few messages in this mailing list, FreeSurfer 6.0.0 should be compatible with CentOS 7. However in the official documentation I cannot find any related statement. Moveover, the download web page still shows only CentOS 6 as supported platform. Could you please clarify if the current stable release works correctly on CentOS 7 or not? Thank you. Best regards -- Davide Vanzo, PhD Application Developer Adjunct Assistant Professor of Chemical and Biomolecular Engineering Advanced Computing Center for Research and Education (ACCRE) Vanderbilt University - Hill Center 201 www.accre.vanderbilt.edu

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Histogram analysis capability via mri_segstats or other command-lines in Freesurfer?
by Yash Patel 22 Aug '18

22 Aug '18

Dear all, I am using mri_segstats to obtain intensity values from each of the 34 cortical parcellations in the Desikan-Killiany Atlas; this provides metrics such as mean, min, max, range, and standard deviation. Is there a way to extract information such as the *mode*, or information to create a histogram for each of the particular regions? Thank you, Yash

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adding additional manually-defined labels to atlas-derived .annot file
by James Hobart 23 Jul '18

23 Jul '18

External Email - Use Caution Hi Freesurfer community, I have an issue in adding a surface label to an annot file. I had a manually drawn .nii mask in native space for each subject which I have used mri_vol2surf to create a surface overlay and then mri_vol2label (with the surf argument) to create a surface label for the mask. I also have a custom parcellation of fsaverage which I have mapped to individual native space using mri_surf2surf. My issue is I want to combine the outputted binarymask.label file with the custom parcellation. My understanding is that I would need to combine the binarymask.label with the custom.parc.annot file. In order to do this wopuld I break down the annot file with mri_annot2label and then rebuild including the new binarymask.label? Could I also just add another row to the LUT from the custom.parc.annot file to allow this? And finally, how do I deal with the fact that the binarymask.label will overlap with other labels? Ideally I need to force the overwrite of vertex labels so that the binarymask.label is prioritised? BW James

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fcseedcor -- pca output for vcsf.dat and wm.dat
by Eryilmaz, H. Hamdi 20 Jul '18

20 Jul '18

Hi Doug and Freesurfers, I am using fcseedcor to compute the correlation between two time courses for each subject in my group. The command that I run is as follows: fcseedcor -s $subject -fsd resting -seed seed1.dat -seed seed2.dat -xreg global.waveform.dat 1 -xreg vcsf.dat 5 -xreg wm.dat 5 -xreg mcprextreg 6 -hpf .01 -lpf .08 -nskip 4 -o cor_s1s2.dat My first question is about the size of the vcsf.dat and wm.dat files. They seem to be (N+1)xN matrices, where N is the number of timepoints in the signal. Does this mean there are N+1 components for each time point (i.e., N+1 potential regressors to add)? What do they exactly correspond to and how do they relate to the average signal from the ventricles, CSF, and white matter? My other question is about the number of components to include for vcsf.dat and wm.dat. I have seen 5 recommended in examples, however, five components seem to explain very different amount of variance in different subjects and if I change this number for a given subject, I see substantial changes in the resulting correlation value. I would appreciate any suggestion on how to select an unbiased value for the number of components to include. Could including up to the component at which fixed percentage of cumulative variance is explained be a solution? Many thanks for your help! Best, Hamdi

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After v.5.3 to v.6.0 update octave set up doesn't work
by Patrycja Naumczyk 17 Jul '18

17 Jul '18

External Email - Use Caution Hi all, I just switched from FS 5.3 to 6.0 on Gentoo Linux. Previously Freesurfer worked fine under octave setup (as specified here: https://mail.nmr.mgh.harvard.edu/pipermail//freesurfer/2012-January/022135.…) but after the update, when I tried testing a MATLAB related function I get an error: mkcontrast-sess -analysis PASAT.sm5.lh -contrast test -a 1 -c 0 INFO: Found 2 Non-Null Conditions INFO: Found 3 Delays Condition Weights: 1.00000000000000000000 0 mkcontrast2 -config PASAT.sm5.lh/test.config -anadir PASAT.sm5.lh -wcond 1.00000000000000000000 0 -sumconds -o PASAT.sm5.lh/test.mat -wdelay 1 0 0 -octave $Id: mkcontrast2,v 1.3 2016/03/11 23:46:48 greve Exp $ cmtxfile PASAT.sm5.lh/test.mat nconds 2, wcond 1.00000000000000000000 0 ndelays 3, wdelay 1 0 0 ndelays 3, wpsa sumconds 1 sumdelays 0 nircorr 0 TER 0.050000 rdelta rtau ERROR: cannot find matlab. Is it in your path? ERROR running mkcontrast mkcontrast2 -config PASAT.sm5.lh/test.config -anadir PASAT.sm5.lh -wcond 1.00000000000000000000 0 -sumconds -o PASAT.sm5.lh/test.mat -wdelay 1 0 0 -octave Fri Jun 29 21:21:16 CEST 2018 It seems that the environment variable (FS_USE_OCTAVE) is recognized correctly (the function runs with "-octave" flag), but somehow is omitted during execution? What can I do about it? I checked that v.5.3 used mkcontrast, whereas v.6.0 uses mkcontrast2 which does not seem to support octave? Is it possible to force calling mkcontrast instead of mkcontrast2? Best regards, Patrycja

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fthresh function in tksurfer
by srishti goel 13 Jul '18

13 Jul '18

External Email - Use Caution Hello, I am trying to view network based maps produced from a meta-analysis using neuroelf on the surface in freesurfer. The meta-analytic maps are thresholded maps that represent the proportion of contrasts that activated at each voxel I projected my maps on the surface using: mri_vol2surf --src negative_allsocial_proportion.img --regheader mni152_subject --hemi lh --o ./neg_allsocial_lh.nii --projfrac 0.5 Then to view it used: tksurfer mni152_subject lh inflated -overlay ./neg_allsocial_lh.nii -fthresh 0.05 The issue I have is with the fthresh value. I read the wiki and some stuff on archive about the fthresh value but I am unsure what it exactly means and does. My issue is that the display of my maps changes when I change the fthresh value even though the maps have been k-thresholded using neuroelf before exporting them to freesurfer. More area is marked up when I decrease the threshold value from 0.1 to 0.05 and nothing is visible above 0.1 Does anyone have any thoughts about what might be going on there and how I can fix it? Do I need to do something totally different from what I am doing? Best, Srishti Social/Clinical Research Specialist Child Imaging Research and Life Experiences Lab University of North Carolina at Chapel Hill email (W): srishtig(a)email.unc.edu skype: srishti.goel12

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Putting results from probabilistic tractography on the surface
by Sims, Sara A 11 Jul '18

11 Jul '18

External Email - Use Caution Hello, I have outputs from FSL probtrackx that I would like to display on Freesurfer surfaces. If I put the volume into freesurfer space how can I get it to sample onto a surface when the values are in white matter and not grey matter? To rephrase, how can I pull data from white matter (just below the grey matter) and display it on a surface? Many thanks, Sara

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Custom color map in Freeview
by Anna Mynick 11 Jul '18

11 Jul '18

Hi all, I’m wondering whether there’s a way to create a custom color map in Freeview that would operate as a alternative to the preset Greyscale, Heatmap, NIH, PET, Jet and GE Color options. Ideally, I could assign each number value a given color, e.g. every “0” value in an .nii file is black, every “1” value is red, every “2” value is blue, every “3" is green and so on. I already have the RGB values worked out for each number value; I just need to know how to format this information and where to put it so that I can my custom colormap as an option in Freeview. For my purposes, there would be no need to adjust the assigned colors based on the overall range of values. For instance, there would be no need to assign a different color value to a “1” value depending on whether the highest value in the overall .nii file is 1 or 100. I did try reading the related conversation here<https://mail.nmr.mgh.harvard.edu/pipermail//freesurfer/2017-April/051277.ht…> but I can’t seem to find the file it references, annotval2surfoverlay.m, in the Freesurfer directory. Thanks very much for your help! Anna

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Freesurfer June 2018