Freesurfer May 2018

freesurfer@nmr.mgh.harvard.edu

117 participants
167 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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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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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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Longitudinal errors, Voxel size differs
by Erik O'Hanlon 04 Jul '18

04 Jul '18

External Email - Use Caution Hi FS Experts, I'm trying to run a longitudinal analysis across three timepoints and have run the cross steps for the data. I then ran the base step but found that my voxel dimensions are slightly different across the timepoints and I got the following error ERROR: MultiRegistration::loadMovables: images have different voxel sizes. Currently not supported, maybe first make conform? Debug info: size(2) = 0.881117, 0.881117, 0.881117 size(0) = 0.884507, 0.884507, 0.884507 MultiRegistration::loadMovables: voxel size is different /projects/pi-vokeane/HPC_16_00925/MC_FS_testdata_EOH/freesurfer/subjects/abd025_tp3/mri/norm.mgz. I assume I need to resample the data to the voxel size of the first time point and then rerun. Can you advise on what command to use to resample the images from time 2 and time 3 to those of time 1 before rerunning from scratch. I assume I can't avoid rerunning the initial reconall step once I resample my data. Any guidance is much appreciated Best regards Erik Erik O'Hanlon Postdoctoral researcher [cid:rcsi-crest-signature_f581c185-1d03-45c8-a786-23d8ece3d391.png] RCSI Psychiatry Royal College of Surgeons in Ireland Beaumont Road, Beaumont D9 Ireland T: 8093740 E: erikohanlon(a)rcsi.ie W: www.rcsi.com<http://www.rcsi.com/> Transforming Healthcare Education, Research and Service: RCSI Strategic Plan 2018-2022<http://www.rcsi.ie/strategy2018> RCSI DEVELOPING HEALTHCARE LEADERS WHO MAKE A DIFFERENCE WORLDWIDE [cid:both3_b9da8717-e91f-4ea7-8729-dc2c4d0a7a5f.png]

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Longitudinal Process
by Samir Rekic 04 Jul '18

04 Jul '18

External Email - Use Caution Dear FreeSurfers, I am trying to run the longitudinal process including (recon-all -base and -long) for 5 different timepoints. But in my original data one the of five differs in the acquisition orientation and in the size of the field of view, so the results and especially the statistic is distorted. Four of my data sets have RPI as acquisition Parameter and a FOV of 230, the last data set has LPI and a FOV of 257. Does it even make sense to include this last dataset – is it even possible (due to different Parameters)? Do I have to pre-process this different data set? Thank you in advance! Sam

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Contrast interpretation - between-groups mean
by Pedro Rosa 16 Jun '18

16 Jun '18

External Email - Use Caution Dear FreeSurfers, I got results from a cortical area analysis that intrigued me: Upon the inspection of clusters that survived Monte-Carlo simulation, I found a cluster with larger area among a first group in contrast to a second group. However, when I calculated the cortical areas means from that cluster (as available in the glmdir), the second group had values slightly larger than the first group (i.e., showing a difference in the opposite direction). How would you explain such findings? Must I have committed a mistake in the analysis or its interpretation? Best, Pedro Rosa - University of São Paulo - Brazil.

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Missing Control Points and QATools
by Matthew Peverill 12 Jun '18

12 Jun '18

External Email - Use Caution Hello, We are finishing up manual inspection and editing of our dataset. As part of this process, we used QATools to generate QA reports. While we were running our reports the tmp/control.dat file was deleted from many of our subject directories (the brains had already been recon'd, so the corrected surfaces were not affected). The timing certainly suggests these were related, but we have no way of knowing if something else unrelated to QAtools happened that caused these files to be deleted. So two questions: 1) Has anyone else had an experience with QAtools where the control.dat file was deleted, or have any insight about why this could have happened? 2) Is the data in control.dat stored anywhere else? For example, can it be recovered from mri/ctrl_pts.mgz? We are mostly fine, but a few brains will need to have control points re-applied. Something of a shot in the dark, but we would love any suggestions. Thanks, -Matt Version: freesurfer-Linux-centos6_x86_64-stable-pub-v5.3.0 uname -a: Linux vmpfc 3.16.0-4-amd64 #1 SMP Debian 3.16.39-1+deb8u2 (2017-03-07) x86_64 GNU/Linux -- Matthew Peverill mrpeverill(a)gmail.com (preferred)

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Freesurfer May 2018