Freesurfer April 2020

freesurfer@nmr.mgh.harvard.edu

101 participants
170 discussions

Extract single time frame
by Rockers, Elijah D. 16 Oct '22

16 Oct '22

Hello again, I have a large time series in dicom or .nii format. I am interested in extracting a single time frame from it. I did this before, I believe with freesurfer, but I have somehow forgot the name of the command, and I can't seem to find it. I believe it could be used to specify particular regions of the volume, as well as time. I need the entire volume, still, but only one frame. Thanks in advance! Eli Houston Methodist. Leading Medicine. Ranked by U.S.News & World Report as one of America's "Best Hospitals" in 11 specialties. Named to FORTUNE® Magazine's "100 Best Companies to Work For®" list 10 years in a row. Designated as a Magnet hospital for excellence in nursing. Visit us at houstonmethodist.org. Follow us at twitter.com/MethodistHosp and www.facebook.com/HoustonMethodist. ***CONFIDENTIALITY NOTICE*** This e-mail is the property of Houston Methodist Hospital and/or its relevant affiliates and may contain restricted and privileged material for the sole use of the intended recipient(s). Any review, use, distribution or disclosure by others is strictly prohibited. If you are not the intended recipient (or authorized to receive for the recipient), please contact the sender and delete all copies of the message. Thank you.

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Job ad: MRI physicist
by Keith Schneider 07 May '21

07 May '21

External Email - Use Caution The Center for Biomedical and Brain Imaging (CBBI) is a core imaging facility at the University of Delaware dedicated to scientific research. It is equipped with a Siemens Prisma 3T MRI scanner, Bruker 9.4T small bore MRI scanner, TMS, and MRI-compatible EEG. It supports a wide range of scientific investigations through imaging of humans, animals and materials. Under general direction of the CBBI Manager, the MRI Physicist is responsible for supporting the operations of the Siemens and Bruker MRI scanners. The MRI Physicist is expected to contribute to both research and training efforts that will include pulse sequence programming, parameter and image quality optimization, protocol design, scanner operation, technical support and user training. The candidate will be expected to maintain a broad knowledge of state-of-the-art MRI technology and equipment. The incumbent must have excellent communication and organizational skills, the ability to positively interact with a diverse group of MRI users, and a strong motivation to learn new MRI techniques. MAJOR RESPONSIBILITIES: • Pulse sequence programming on Bruker 9.4T and Siemens 3T MRI scanners • Assist users on appropriate choice and use of coils • Technical liaison for obtaining sequences or protocols for non-standard imaging (e.g. cardiac, musculoskeletal) from Siemens and other sites • File reports as needed for WIP sequences and Siemens MRA • Ensure data quality from the viewpoint of machine fundamentals • Technical support 9.4T and 3T scanners • Protocol design and testing for 9.4T scanner, including imaging of live animals and awake animals; as-needed for 3T • Routine quality assurance for 9.4T and 3T MRI scanners • Train users, including students, on use of 9.4T and 3T MRI scanners • Help users optimize pulse sequence parameters to maximize SNR and avoid imaging artifacts • Consult on image analysis, as needed • Review journals and abstracts to keep abreast of new developments • Collaborate with ongoing research as needed; may have independent research projects if desired • Consult users about imaging details for manuscript preparation and grant applications, as needed • Perform miscellaneous job-related duties as assigned QUALIFICATIONS: • PhD in MR physics or MS with equivalent experience • expert understanding of MR physics, image acquisition, signal processing, imaging processing and image reconstruction • MR pulse sequence programming • Experience with Bruker and Siemens MRI scanners • MRI scanning experience with both humans and animals—willing to handle animals • Ability to design experiments, optimize MRI protocols, troubleshoot image artifacts, analyze data, and interpret results • Knowledge of functional MRI, DTI, MRS, T1/T2 relaxation and perfusion • Siemens IDEA and ICE certification (or ability to obtain) http://careers.udel.edu/cw/en-us/job/493998/mri-physicist-research-office <http://careers.udel.edu/cw/en-us/job/493998/mri-physicist-research-office> For further information, contact me. keith ----- Keith Schneider Director, Center for Biomedical and Brain Imaging Associate Professor Department of Psychological and Brain Sciences University of Delaware

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Parcellation Error Pre-Post Central Gyrus R but not L Hemisphere
by Fraser Smith 26 Apr '21

26 Apr '21

External Email - Use Caution Hi there I have a clear parcellation error with one participant who does look to have an atypical structure around the right post-central gyrus (looks split in two). Both the pre and post central gyri are shifted significantly backwards – but only for the right not the left hemisphere. I see this has been mentioned before in the archives – but I have been unable to find a fix for this. Could you provide any tips on what to try? I am using v6.0.0. Best wishes Fraser Smith

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Correct for sulcuses & ventricles size
by John Anderson 13 Dec '20

13 Dec '20

External Email - Use Caution Dear Freesurfer experts, I have two groups of subjects (healthy and patients). The patients have different degrees of atrophy. Looking into the individual scans, the subjects are largely different in the space between the sulcuses and the size of ventricles. My questions are: 1. Is there any way to correct for these differences in the surface based analysis? 2. Including eTIV covariate does it help in this case? 3. Does the resampling to "fsaverage" overcome the challenge of these differences between the subjects? I appreciate any advice, John

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Re: [Freesurfer] aparcstats2table error
by Devika K 15 Jul '20

15 Jul '20

External Email - Use Caution I tried doing cortical parcellation using Destrieux atlas. I ran the aparcstats2table command from the SUBJECTS_DIR directory containing all of the output from recon-all. But I got an error, PFA. Do I need to run any other commands before running aparcstats2table command, I would be grateful if anyone could help me to resolve this issue. Many thanks in advance. Regards Devika K Research Scholar, Dept of EEE e: k_devika(a)cb.students.amrita.edu Amrita Vishwa Vidyapeetham Coimbatore, India

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Error with "recon-all -make all" following multiple manual editing
by Matthieu VANHOUTTE 03 Jul '20

03 Jul '20

External Email - Use Caution Dear Freesurfer's experts, Havng done multiple types of manual editing in two subjects, I relaunched the recon-all process (Freesurfer 6.0.1) with the flag "-make all". However, during the process, I goth for both subjects the following error message: / / /make: *** [/netapp/vol2_agewell/pro/IMAP/imap_mvh/FS6.0.1/awellv1s097/mri/aseg.presurf.mgz] Error 1/ /recon-all -s /netapp/vol2_agewell/pro/IMAP/imap_mvh/FS6.0.1/awellv3s024 -ccseg ERROR: Flag -ccseg unrecognized./ Following the troubleshooting site (https://surfer.nmr.mgh.harvard.edu/fswiki/FsTutorial/TroubleshootingDataV6.0) I have over-writed the "recon-all.makefile" file since I use the 6.0.1 version of Freesurfer. Thanks for helping. Best, Matthieu

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samseg with subfields
by Sneha Pandya 08 Jun '20

08 Jun '20

External Email - Use Caution Dear experts, Is it possible to run subfield analysis (hippcampal subfields, amygdalar, thalamic nuclei, and brainstem structures) when we only run samseg on our dataset? Thank you, Sneha

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vol2subfield single time course from multiple regions
by stdp82＠virgilio.it 18 May '20

18 May '20

External Email - Use Caution Hi list, vol2subfield --i fmcpr.nii.gz --reg register.dof6.lta --sf ThalamicNuclei.v10.T1.mgz --stats stats.dat --avgwf avgwf.dat --avgwfvol avgwfvol.mgz --o f2subf.nii.gz extracts the time course from each thalamic subregions. If I would like to merge multiple regions (e.g. --id 8115 --id 8116) and extract a single time course from them, which is the way? Thanks Stefano

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DTI and T1 AND T2 WEIGHTED IMAGES
by Amar Shukla 17 May '20

17 May '20

External Email - Use Caution Hello Freesurfer, Can we go through the volumetric [surface area and many more ] through DTI images and T1 or t2 weighted images of the same subject. Can we provide common study and can we develop any analysis on these studies. My research is focused on these direction o or any kind of corelation through different Images . basis of diffusion images and T1 or t2 weighted images, so please give suggestions and comment on these. -- With Regards, Amar Shukla

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Re: [Freesurfer] on Ubuntu (was FreeSurfer V 7.0 on Centos 8) {Disarmed}
by fsbuild 13 May '20

13 May '20

External Email - Use Caution Hello Tristan, Going back to that thread, I’d like to try the command you uploaded data for as freesurfer_data.tar.gz on a couple of Ubuntu systems, but either I’m looking in the wrong place or it’s not there anymore.  Is there a shared google drive link or something you point me to for a download link?  > freeview -v brainmask.mgz T1.mgz -f lh.white:edgecolor=yellow > lh.pial:edgecolor=magenta rh.white:edgecolor=yellow rh.pial:edgecolor=magenta > > We can also replicate the error by opening freeview and opening all the above > files sequentially through the GUI. - R. On Mar 31, 2020, at 13:41, TRISTAN J PAUTSCH <tpautsch(a)wisc.edu> wrote:        External Email - Use Caution        Thanks for the reply, all.The issues I'm having are the same as they were in my prior thread, found here:https://www.mail-archive.com/freesurfer@nmr.mgh.harvard.edu/msg63458.h… tried everything up to and including compiling everything from scratch (including FS itself, missing libs, PETSC, etc.). The main takeaway is that I pretty convincingly narrowed the issue down to PETSC+Ubuntu 18.04, the most pertinent details for that being in the following post:https://www.mail-archive.com/freesurfer@nmr.mgh.harvard.edu/msg63702.h… when I was active in that thread, I emailed the PETSC mailing list and got no response, and at the time I was pretty busy with other projects so I had to let it go for the time being; I maintained my old RHEL6 server so people could continue to use FS. Now with everyone in quarantine (and RHEL6 entering ELS this November), it's a decent time to look back into this issue. I wouldn't have reached back out to the FS list, however when I saw that a focus was being placed on Ubuntu (and that there was a working Ubuntu VM), I became hopeful that maybe this issue was resolved?TFrom: fsbuild@contbay.com <fsbuild@contbay.com>Sent: Tuesday, March 31, 2020 3:57 AMTo: freesurfer@nmr.mgh.harvard.edu <freesurfer@nmr.mgh.harvard.edu>Cc: ts+ml@rcmd.org <ts+ml@rcmd.org>; TRISTAN J PAUTSCH <tpautsch@wisc.edu>Subject: Re: [Freesurfer] on Ubuntu (was FreeSurfer V 7.0 on Centos 8) We would also like to know about any issues you are seeing on Ubuntu.I think Ubuntu eliminated some jpeg/png packages from their repos.  Those can be downloaded and installed manually,e.g., libpng12-0_1.2.54-1ubuntu1.1_amd64.deb, libjpeg62_6b2-3_amd64.deb.  That is part of the reason we made an Ubuntu 18 VM available with everything pre-installed.. The VM is essentially what has been used for the freesurfer course which runs mostly freeview commands with some mri* commands (though I believe a recon-all also works).  The VM is running binaries built on CentOS7 - as the reference platforms for freesurfer dev are currently CentOS and MacOS.  We are looking at making a .deb installer for freesurfer on Ubuntu though.There is some info on the wiki about packages required to compile the source on Ubuntu - but you don’t need all of these to run (even the CentOS) binaries.MailScanner has detected a possible fraud attempt from "surfer..nmr.mgh.harvard.edu" claiming to behttps://surfer.nmr.mgh.harvard.edu/fswiki/BuildRequirements- R.On Mar 31, 2020, at 02:50, Tim Schäfer <ts+ml(a)rcmd.org> wrote:       External Email - Use Caution        Hi Tristan,I'm about to setup a FreeSurfer installation on an Ubuntu system, and I wondered whether you could elaborate on the kind of issues you are experiencing.Best,Tim--Dr. Tim SchäferPostdoc Computational NeuroimagingDepartment of Child and Adolescent Psychiatry, Psychosomatics and PsychotherapyUniversity Hospital Frankfurt, Goethe University Frankfurt am Main, GermanyOn March 30, 2020 at 11:01 PM TRISTAN J PAUTSCH <tpautsch(a)wisc.edu> wrote:       External Email - Use Caution        Is there going to be an "official" Ubuntu build this time around (as in, built and tested in Ubuntu) that isn't the VM? Both the current CentOS and the dev builds continue to have issues (even when compiled from scratch) on my Ubuntu 18.04 servers.Thanks!T________________________________From: freesurfer-bounces(a)nmr.mgh.harvard.edu <freesurfer-bounces(a)nmr.mgh.harvard.edu> on behalf of fsbuild(a)contbay.com <fsbuild(a)contbay.com>Sent: Monday, March 30, 2020 9:40 AMTo: freesurfer(a)nmr.mgh.harvard.edu <freesurfer(a)nmr.mgh.harvard.edu>Cc: dr.minafakhry(a)live.com <dr.minafakhry(a)live.com>Subject: Re: [Freesurfer] FreeSurfer V 7.0 on Centos 8       External Email - Use CautionHello Mina,I see from https://www.centosblog.com/centos-eol-dates/ that CentOS 6 will no longer be updated as of 11/2020, and similarly for CentOS 7 in 6/2024.  It looks like CentOS 8 was released around September of 2019.While we do not currently build/test on CentOS8, I am sure it will eventually be supported.   Given some users will continue to use CentOS 6 even after 11/2020 and that many people have been running the freesurfer 6 release on CentOS6, then even the upcoming freesurfer 7 release is targeting CentOS6, CentOS7 and Ubuntu linux (as well as Mac OS).There is also currently an Ubuntu 18 VM with freesurfer 6 and the beta release of freesurfer 7 pre-installed which you can find here, https://surfer.nmr.mgh.harvard.edu/fswiki/VM_67- R.On Mar 30, 2020, at 08:52, Mina Rizkallah <dr.minafakhry(a)live.com> wrote:       External Email - Use CautionGreetings FreeSurfer team,I recently upgraded by workstation from Centos 7 to 8.1 as the support for centos  7 will be over soon.I tried installing freesurfer version 7.0 beta 1 but failed due to some unresolved dependencies (tried on a  virtual centos 7 and worked fine) !!so, when will there be support for centos 8, thank youBest regardsMina_______________________________________________Freesurfer mailing listFreesurfer@nmr.mgh.harvard.edu<mailto:Freesurfer@nmr.mgh.harvard.edu>https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer_______________________________________________Freesurfer mailing listFreesurfer@nmr.mgh.harvard.eduhttps://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer_______________________________________________Freesurfer mailing listFreesurfer@nmr.mgh.harvard.eduhttps://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer_______________________________________________Freesurfer mailing listFreesurfer@nmr.mgh.harvard.eduhttps://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer

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Freesurfer April 2020