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30132 discussions

Job opening: MRI Senior Research Specialist at OHIO STATE UNIVERSITY
by Xiangrui Li 29 Jan '20

29 Jan '20

External Email - Use Caution MRI Senior Research Specialist OHIO STATE UNIVERSITY The Center for Cognitive and Behavioral Brain Imaging <https://ccbbi.osu.edu/> (CCBBI), in the College of Arts and Sciences, seeks an MRI (Magnetic Resonance Imagining) Senior Research Specialist to join our team. The College of Arts and Sciences is the largest college and the academic heart of the university. The College hosts 81 majors. With 38 departments, 20+ world-class research centers, and more than 2,000 faculty and staff members, students have the unique opportunity to study with the best artists, scholars, and scientists in their field. The College values diversity and offers a supportive, open, and inclusive community. The CCBBI, directed by Dr. Ruchika Prakash, is a state-of-the art imaging center, housing a research- dedicated 3T Siemens Prisma scanner and supporting principal investigators across the university conducting scientific investigations related to human and animal imaging. The MRI Senior Research Specialist remains informed of the latest technical developments in the field of functional MRI, and communicates these developments to users of the facility, both in-person and through research seminars; meets frequently with center users to learn about current and future needs as pertaining to sequences or fMRI techniques; and actively engages in the development and use of novel fMRI techniques to improve the technical caliber of the center; provides technical support to current and new pilot and funded research projects at the center; assists center users to optimize MRI, fMRI, and DTI sequences for different experimental needs; works with users to develop custom-tailored sequences; participates in the teaching mission of the center and educates users in image acquisition, processing, and data analysis through comprehensible presentations in research seminars and user workshops; participates with other CCBBI staff in teaching the annual Introduction to fMRI course every spring; maintains proper functioning of the Siemens Prisma MRI system, including quality checks, and related hardware in the facility, and debugs any hardware problem(s), and interfaces with representatives of various hardware vendors to find solutions to problem(s); works with the CCBBI team to maintain and monitor the safety of the participants and the fMRI facility; position available for one year with the possibility of extension based on satisfactory performance and availability of funds. Successful candidates must have earned a Doctoral degree in MR physics, biomedical engineering, electrical engineering or related field; research experience in a technical field closely related to MRI, fMRI, and DTI; experience in managing MRI system(s). If you are interested in being considered for the position, review the full job description and qualifications and apply online at https://www.jobsatosu.com, under job listing #457097 and submit a cover letter detailing background and experiences, a CV, the expected date of availability, and the names and contact of three references. If you have questions about the position or the center, please contact Dr. Ruchika Prakash at prakash.30(a)osu.edu CCBBI Website: https://ccbbi.osu.edu/ *To build a diverse workforce, The Ohio State University encourages applications from all individuals. Ohio State is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to age, race, color, religion, sex, sexual orientation, gender identity, national origin, disability status, or protected veteran status.*

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TRACULA Preprocessing Error
by Al Qadi, Ameen 29 Jan '20

29 Jan '20

External Email - Use Caution Hi Freesurfer Developers, I downloaded the Freesurfer tutorial data to run the TRACULA tutorial, and encountered a number of issues: 1. When running trac-all, I get the following error: trac-all -prep -c $TUTORIAL_DATA/diffusion_tutorial/dmrirc.tutorial INFO: SUBJECTS_DIR is /zstore/data/aalqadi/aalqadi/tutorial_data/diffusion_recons INFO: Diffusion root is /zstore/data/aalqadi/aalqadi/tutorial_data/diffusion_tutorial Actual FREESURFER_HOME /usr/local/freesurfer ERROR: cannot find /zstore/data/aalqadi/aalqadi/tutorial_data/diffusion_recons/elmo.2005 I found the elmo.2005 directory in *diffusion_tutorial*, and not *diffusion_recons*. Unsure why this happened, I copied all the data from diffusion_tutorial to diffusion_recons. 2. After re-running trac-all, the following error appeared: mri_convert --bvec-voxel /zstore/data/aalqadi/aalqadi/tutorial_data/diffusion_tutorial/elmo.2005/orig/656000-11-1.dcm /zstore/data/aalqadi/aalqadi/tutorial_data/diffusion_tutorial/elmo.2005/dmri/dwi_orig.nii.gz mri_convert.bin --bvec-voxel /zstore/data/aalqadi/aalqadi/tutorial_data/diffusion_tutorial/elmo.2005/orig/656000-11-1.dcm /zstore/data/aalqadi/aalqadi/tutorial_data/diffusion_tutorial/elmo.2005/dmri/dwi_orig.nii.gz ERROR: file /zstore/data/aalqadi/aalqadi/tutorial_data/diffusion_tutorial/elmo.2005/orig/656000-11-1.dcm does not exist trac-preproc exited with ERRORS at Tue 28 Jan 2020 10:21:41 PM UTC The issues with mri_convert stemmed from the failure to locate the * dwi_orig.nii.gz* file in diffusion_tutorial/elmo.2005/dmri/. The dmri subdirectory did not have the .gz file, so I was wondering if there was an issue with the tutorial data? (Couldn't find the .gz file anywhere else, re-downloaded the data and the same error showed up). Any guidance would be much appreciated. The log file for error #2 is attached. Best, Ameen -- Ameen Al Qadi MSBS Candidate Icahn School Of Medicine at Mount Sinai '20 +1-646-500-1521 ameen.alqadi(a)icahn.mssm.edu

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Anatomicuts usage
by nayan wadhwani 29 Jan '20

29 Jan '20

External Email - Use Caution Hello FS users, I am trying to use Anatomicuts tool of freesurfer for macOS. Since I was not using ./dev version of freesufer so I am unable to set the environment for the tool and is it available for use or will be available with the new release itself. Thanks and Regards Nayan Wadhwani

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Re: [Freesurfer] Xl defect in Freesurfer
by Devika K 29 Jan '20

29 Jan '20

External Email - Use Caution Hi Freesurfer Team, I am running recon-all command in parallel. one of my subject's (recon-all.log file) is showing Xl defect and it has been in this step overnight and there is no further progress. PFA of recon-all.log file and recon-all-status.log file of the above-mentioned subject. The recon-all process for this subject is not terminated with an error, it's still running. Could you please help me to resolve this issue? 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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Re: [Freesurfer] medial wall metric file
by Alexopoulos, Dimitrios 28 Jan '20

28 Jan '20

External Email - Use Caution Yes, a label or roi metric file of 0 and 1s (preferably 0s for the medial wall vertices) for that can be converted to workbench format. Jim On Jan 28, 2020 5:42 PM, "Greve, Douglas N.,Ph.D." <DGREVE(a)mgh.harvard.edu> wrote: Attention: This email originated from outside the university. Do you mean you want a binary mask of the medial wall? You can create a mask of the cortical label (?h.cortex.label) with mri_label2label You can then invert that with something like fscalc lh.cortex.mask.mgz not -o lh.medialwall.mask.mgz On 1/28/2020 6:31 PM, Alexopoulos, Dimitrios wrote: External Email - Use Caution Is there a freesurfer file that contains metric info that delineates the medial wall in the native surface output for an individual? It appears to be associated with the ?lh.aparc.annot file (below). I’d like to be able to export the medial wall metric into Worbench. Thanks. Jim [cid:part1.330140F5.A370F13A@mgh.harvard.edu] ________________________________ The materials in this message are private and may contain Protected Healthcare Information or other information of a sensitive nature. If you are not the intended recipient, be advised that any unauthorized use, disclosure, copying or the taking of any action in reliance on the contents of this information is strictly prohibited. If you have received this email in error, please immediately notify the sender via telephone or return mail. _______________________________________________ Freesurfer mailing list Freesurfer(a)nmr.mgh.harvard.edu<mailto:Freesurfer@nmr.mgh.harvard.edu> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer ________________________________ The materials in this message are private and may contain Protected Healthcare Information or other information of a sensitive nature. If you are not the intended recipient, be advised that any unauthorized use, disclosure, copying or the taking of any action in reliance on the contents of this information is strictly prohibited. If you have received this email in error, please immediately notify the sender via telephone or return mail.

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medial wall metric file
by Alexopoulos, Dimitrios 28 Jan '20

28 Jan '20

External Email - Use Caution Is there a freesurfer file that contains metric info that delineates the medial wall in the native surface output for an individual? It appears to be associated with the ?lh.aparc.annot file (below). I'd like to be able to export the medial wall metric into Worbench. Thanks. Jim [cid:image001.jpg@01D5D600.D5100A80] ________________________________ The materials in this message are private and may contain Protected Healthcare Information or other information of a sensitive nature. If you are not the intended recipient, be advised that any unauthorized use, disclosure, copying or the taking of any action in reliance on the contents of this information is strictly prohibited. If you have received this email in error, please immediately notify the sender via telephone or return mail.

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Re: [Freesurfer] help: fs-fast group level analysis per run
by Rami Hamati 28 Jan '20

28 Jan '20

External Email - Use Caution Thanks Dr. Greve. We've made our script available on github for anyone who may be interested! https://github.com/MolecularImagingLab/fMRI_scripts -- Rami Hamati, MSc. Royal's Institute of Mental Health Research Molecular Imaging Laboratory (MIL) 1145 Carling Ave, Ottawa, ON K1Z 7K4 Rami.Hamati(a)theroyal.ca rhama036(a)uottawa.ca

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what is the argument for arguments for symmetric Geometric Transfer Matrix and two-compartment model (Meltzer Method) in the PETsurfer ?
by Kate Marvel 28 Jan '20

28 Jan '20

External Email - Use Caution Hi Freesurfer community, I would like to know the arguments to use for symmetric Geometric Transfer Matrix and two-compartment model (Meltzer Method) in the petsurfer command "mri_gtmpvc". Thank you, -- kate

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Re: [Freesurfer] Flag for recon-all to output aparc2005 labels (freesurfer 6.0)
by Greve, Douglas N.,Ph.D. 28 Jan '20

28 Jan '20

Not sure, we have not been using that flag in a while. When you look at the volume in freeview, you can see what the code is by clicking on a voxel. You can change the offset by including --base-offset XXX to mri_aparc2aseg, On 1/24/2020 2:40 PM, Grodin, Erica wrote: External Email - Use Caution Hi Doug, Thanks for your reply. I ran the mris_ca_label command manually using the lh.atlas2005_simple.gcs and rh atlas. I then ran the mri_aparc2aseg with the --a2005s flag, which gives me an aparc.a2005s image. However, when I try to extract the VOIs that I need from that image I end up with an empty file and when I look at the aparc.a2005s image, the intensities only seem to go up to the 2000's instead of the 9000's which is what I need for the VOIs. I'm wondering if I am using the wrong .gcs file, but the simple 2005 one is the only one that seems appropriate. Thanks for your help! Erica ---------------------- Erica Grodin, Ph.D. Postdoctoral Fellow University of California, Dept. of Psychology and Psychiatry ________________________________ From: freesurfer-bounces(a)nmr.mgh.harvard.edu<mailto:freesurfer-bounces@nmr.mgh.harvard.edu> <freesurfer-bounces(a)nmr.mgh.harvard.edu><mailto:freesurfer-bounces@nmr.mgh.harvard.edu> on behalf of Greve, Douglas N.,Ph.D. <DGREVE(a)mgh.harvard.edu><mailto:DGREVE@mgh.harvard.edu> Sent: Thursday, January 16, 2020 3:40 PM To: freesurfer(a)nmr.mgh.harvard.edu<mailto:freesurfer@nmr.mgh.harvard.edu> <freesurfer(a)nmr.mgh.harvard.edu><mailto:freesurfer@nmr.mgh.harvard.edu> Subject: Re: [Freesurfer] Flag for recon-all to output aparc2005 labels (freesurfer 6.0) I don't think so, but you can run mris_ca_label by hand. Look in the recon-all.log file for the command, then use the 2005 tif instead of the 2009 tif. I think it should work. On 1/16/2020 3:31 PM, Grodin, Erica wrote: External Email - Use Caution Hello, I am running recon-all on my data using freesurfer 6.0 which is working correctly. However, I need to create some VOIs which labels are only outputted from the aparc2005 set and do not appear in the aparc2009 set; specifically: 9001, 9501 ctx-lh-primary-motor, ctx-rh-primary-motor 9005, 9505 ctx-lh-prim-sec-somatosensory, ctx-rh- prim-sec-somatosensory 9002, 9502 ctx-lh-premotor, ctx-rh-premotor 9004, 9504 ctx-lh-posterior-parietal, ctx-rh-posterior-parietal Is there a flag or some other option to output the 2005 set in addition to the 2009? Thank you for your help, Erica Grodin ---------------------- Erica Grodin, Ph.D. Postdoctoral Fellow University of California, Dept. of Psychology and Psychiatry _______________________________________________ Freesurfer mailing list Freesurfer(a)nmr.mgh.harvard.edu<mailto:Freesurfer@nmr.mgh.harvard.edu> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer

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recon exited with errors
by Desel, Tenzin 28 Jan '20

28 Jan '20

Hello FreeSurfer Developers, I'm attempting to run recon-all after unpacking data. It is exiting with errors - mri_cc: no WM voxels found with norm > 40 -- check skull stripping I've attached the recon-all.log in case it's of any use. 1) FreeSurfer version: freesurfer-Linux-centos7_x86_64-stable-v6-20161229-80ac5eb 2) Platform: centos7_x86_64 3) uname -a: Linux lemmiwinks.nmr.mgh.harvard.edu 3.10.0-1062.4.3.el7.x86_64 #1 SMP Wed Nov 13 23:58:53 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux 4) recon-all.log: see attached Thank you!

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