Freesurfer

freesurfer@nmr.mgh.harvard.edu

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30135 discussions

Re: [Freesurfer] trac-all -prep error field map error
by Eileen Moore 04 Sep '14

04 Sep '14

Anastasia, I'm not sure how I can give tracula the phase difference maps, can you provide an example? As a reminder, I've run a wrapper script around epidewarp which takes our dicom images and converts them into a phase difference map (it is based on the script that was authored by Doug Greve for the fBIRN consortium). In the tutorial dmrirc example I see only the 'set b0mlist' and 'set b0plist' options, and am unsure where I could give it the phase difference map. I've also tried converting the dicom magnitude and phase maps to nifti format and inputting these into the dmrirc file but I am still getting an error. (See attached log file). Thanks, Eileen. > ------------------------------ > > Message: 10 > Date: Thu, 17 Jul 2014 04:14:16 -0400 (EDT) > From: Anastasia Yendiki <ayendiki(a)nmr.mgh.harvard.edu> > Subject: Re: [Freesurfer] trac-all -prep error field map error > To: Freesurfer support list <freesurfer(a)nmr.mgh.harvard.edu> > Message-ID: <alpine.LRH.2.03.1407170411110.12767(a)nmr.mgh.harvard.edu> > Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed > > > Hi Eileen - All image formats that mri_convert (and thus any freesurfer > program) can read will do, you don't need dicom. Try giving trac-all the > phase difference maps you have and let's see what happens. > > Best, > a.y > > On Wed, 16 Jul 2014, Eileen Moore wrote: > > > Hi Anastasia, > > > > OK - our imaging physicists had developed a wrapper script around > epidewarp > > which takes our dicom images and converts them into the phase difference > map > > (it is based on the script that was authored by Doug Greve for the fBIRN > > consortium). It looks like the tracula script requires dicom images. Is > > there a way for me to do epidewarp manually and then follow through with > the > > remaining steps using trac-all? > > > > Thanks, > > Eileen. > > > > > > Date: Mon, 14 Jul 2014 11:23:47 -0400 (EDT) > > From: Anastasia Yendiki <ayendiki(a)nmr.mgh.harvard.edu> > > Subject: Re: [Freesurfer] trac-all -prep error field map error > > To: Freesurfer support list <freesurfer(a)nmr.mgh.harvard.edu> > > Message-ID: > > <alpine.LRH.2.03.1407141119560.23459(a)nmr.mgh.harvard.edu> > > Content-Type: text/plain; charset="utf-8" > > > > > > Hi Eileen - That step is run with the program epidewarp.fsl, > > which you can > > run on the command line to see the available options. The input > > phase map > > volume is expected to have either 2 frames (2 separate phase > > maps) or 1 > > frame (the difference phase map). This error from trac-all means > > that it > > found that your input phase map has something other than 1 or 2 > > frames, so > > it doesn't know how to handle it. > > > > Hope this helps, > > a.y > > > > On Sat, 12 Jul 2014, Eileen Moore wrote: > > > > > Hi - I'm using freesurfer 5.3 on an Ubuntu operating system. > > I'm tyring to > > > run tracula on some? images acquired from a GE scanner. I am > > running into > > > problems when I try to perform the registration-based > > B0-inhomogeneity > > > compensation, getting an error in the terminal output: "ERROR: > > Unrecognized > > > format of phase map". However, trac-all -prep runs fine when I > > skip the > > > B0-inhomogeneity compensation step. Is there something else I > > need to do to > > > use field map correction? > > > > > > I've attached the trac-all.log and a copy of the terminal > > output. > > > > > > Thanks, > > > Eileen. > > > > > > > > > > > > > > > > > > > >

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Tracula - May update version
by Peggy Skelly 04 Sep '14

04 Sep '14

I have a few questions about the May 2014 update to Tracula: 1. Between the 2013-12-04 trac-all version 1.53 and 2014-05-26 trac-all version 1.56, the longitudinal stream now uses the aparc+aseg.mgz from the *.long.* directories, and all output is saved there, too. Are the <subj_tp>.long.<subj_base>/dlabel/anat and anatorig transformed into the base space like other images from the longitudinal recon-all, or are they in the original space of the timepoint T1 image? 2. Are there any changes to the bedpostX step, other than using a different mask? I've already run bedpostx in the Dec 2013 version (with lowb_brain_mask). Can the results be used with the new version by moving the <subj>/dmri.bedpostX directory to <subj_tp>.long.base/dmri.bedpostX? 2a. (Maybe pertains to both versions) The link to .../dmri/nodif_brain_mask.nii.gz seems to be made during the -prep stage using .../dlabel/diff/aparc+aseg_mask.bbr.nii.gz or lowb_brain_mask.nii.gz depending on usemaskanat's value in the dmrirc file. The bedpost stage seems to use the target file as its mask no matter what usemaskanat is in the dmrirc file used when calling trac-all -bedp. (I'm trying to use aparc+aseg_mask for -prep and -path, but lowb_brain_mask for -bedp in anticipation of using the bedpostx output for other seed-base tracking in FSL.) 3. May 2014 version: trac-all -prep -notensor fails when it gets to computing the priors because dmri_train includes the --fa flag and the dtifit_FA.nii.gz is not present. Running trac-all -prior without a computed FA also fails the same way. I could compute the tensor, but thought I would save some time. I didn't realize computing the priors would use it. Does it improve the accuracy? Thanks, Peggy

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Job Posting: Assistant Professor of Psychology at the UC-Davis Center for Mind & Brain
by Steven J Luck 04 Sep '14

04 Sep '14

The Center for Mind & Brain and the Department of Psychology at the University of California, Davis, invite applications for a tenure-track position in Mind & Brain Sciences. The appointment will be at the Assistant Professor level. Applications are sought from scholars who have strong and innovative research portfolios that focus on both the human mind and the human brain and that would complement the existing research at the Center for Mind & Brain (http://mindbrain.ucdavis.edu ). This could involve any state-of-the-art methodological approach (including but not limited to imaging, electrophysiology, stimulation, modeling, genetics, neuropsychology, behavior/psychophysics, and child/life-span development) and any content area that integrates mind and brain and is synergistic with existing research at the Center for Mind & Brain. Applicants must have a Ph.D. in psychology, neuroscience, statistics, biomedical engineering, or related field, or an M.D. with specialization in neurology, psychiatry, radiology, or a related field (must be completed by the first day of courses, September 24, 2015); a strong commitment to high quality teaching; and the potential to attract, or an established record of attracting, substantial extramural funding. The successful applicant will hold an academic appointment in the Department of Psychology and will contribute to the graduate and undergraduate teaching programs of that department (and will likely participate in the University-wide Neuroscience Graduate Program). The individual’s laboratory will be located at the Center for Mind and Brain, an interdisciplinary research center with 18 core faculty and a dedicated research staff. The Center offers an impressive array of modern research equipment, including several high-density EEG/ERP recording labs and a transcranial magnetic stimulation laboratory. Center faculty also have access to three research-dedicated MRI scanners at the Imaging Research Center (http://ucdirc.ucdavis.edu ), including a new 3T Siemens Skyra system and a BrainAmp MR system for simultaneous EEG/MRI. The cognitive neuroscience community is extremely well integrated across campus, with exceptionally collegial interactions and collaborations among members of the Center for Mind & Brain, the Center for Neuroscience, the MIND Institute, and the Imaging Research Center. We also have close ties with many academic departments and with the UC-Davis Medical Center. Applicants should submit a curriculum vitae, statements of research and teaching interests, representative reprints and/or preprints, and at least three letters of recommendation electronically at: https://recruit.ucdavis.edu/apply/JPF00384 The position will remain open until filled. Applications submitted by November 1st, 2014 will receive full initial consideration. For information, contact the Search Committee Chair, Dr. Steve Luck, sjluck(a)ucdavis.edu. The University of California, Davis, the Center for Mind & Brain, and the Department of Psychology are interested in candidates who are committed to the highest standards of scholarship and professional activities, and to the development of a campus climate that supports equality and diversity. The University of California is an affirmative action/equal opportunity employer. -------------------------------------------------------------------- Steven J. Luck, Ph.D. Director, Center for Mind & Brain Professor, Department of Psychology University of California, Davis Room 109 267 Cousteau Place Davis, CA 95618 (530) 297-4424 E-Mail: sjluck(a)ucdavis.edu Web: http://mindbrain.ucdavis.edu/people/sjluck Calendar: http://www.google.com/calendar/embed?src=stevenjluck%40gmail.com&ctz=Americ… --------------------------------------------------------------------

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fieldsign map display
by Francesca Strappini 04 Sep '14

04 Sep '14

Dear all, I'm trying to display the fieldsign map. I used standard rotating-wedge and expanding-ring paradigm, and I followed the steps described in FsFastIndividualRetinotopy Analysis. I'm running freesurfer on Ubuntu 14.04. Polar angle and eccentricity map look good but I can't properly display the fieldsign map as an alternation of two colours. I attached a screen-shot as example. Any suggestion? Thanks for the help! Francesca The command line is; tksurfer-sess -a rtopy.DM.lh -s SUBJ01 -fieldsign and that's the output: shalim-ubuntu:/usr/local/freesurfer/fsfast/MeytalRetinotopy> tksurfer-sess -a rtopy.DM.lh -s SUBJ01 -fieldsign Surface DM lh Map Surface DM lh $Id: tksurfer-sess,v 1.16.2.2 2012/11/19 22:35:56 greve Exp $ Linux shalim-ubuntu 3.13.0-35-generic #62-Ubuntu SMP Fri Aug 15 01:58:42 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux Tue Sep 2 17:28:57 IDT 2014 /usr/local/freesurfer/bin/tksurfer list fieldsign con/map fieldsign /usr/local/freesurfer/fsfast/MeytalRetinotopy/SUBJ01/bold/rtopy.DM.lh/fieldsign/fieldsign.nii.gz maplist /usr/local/freesurfer/fsfast/MeytalRetinotopy/SUBJ01/bold/rtopy.DM.lh/fieldsign/fieldsign.nii.gz mri_concat /usr/local/freesurfer/fsfast/MeytalRetinotopy/SUBJ01/bold/rtopy.DM.lh/fieldsign/fieldsign.nii.gz --o /usr/local/freesurfer/fsfast/MeytalRetinotopy/SUBJ01/bold/rtopy.DM.lh/tksconcat.nii ninputs = 1 Checking inputs nframestot = 1 Allocing output Done allocing nframes = 1 Writing to /usr/local/freesurfer/fsfast/MeytalRetinotopy/SUBJ01/bold/rtopy.DM.lh/tksconcat.nii cd /usr/local/freesurfer/fsfast/MeytalRetinotopy setenv SUBJECTS_DIR /usr/local/freesurfer/subjects tksurfer DM lh inflated -overlay /usr/local/freesurfer/fsfast/MeytalRetinotopy/SUBJ01/bold/rtopy.DM.lh/tksconcat.nii -label-outline -colscalebarflag 1 -annot aparc -fthresh 0.5 -fmid 2.25000000000000000000 -fslope .28571428571428571428 -mask /usr/local/freesurfer/fsfast/MeytalRetinotopy/SUBJ01/bold/rtopy.DM.lh/fieldsign/fsig.nii.gz -mask-thresh 0.5 -fthresh .01 Contrasts 0 fieldsign setting colscalebarflag to 1 setting fthresh to 0.5000 setting fmid to 2.2500 setting fslope to 0.2857 mrismaskfile /usr/local/freesurfer/fsfast/MeytalRetinotopy/SUBJ01/bold/rtopy.DM.lh/fieldsign/fsig.nii.gz... setting mrismaskthresh to 0.5000 setting fthresh to 0.0100 subject is DM hemi is lh surface is inflated surfer: current subjects dir: /usr/local/freesurfer/subjects surfer: not in "scripts" dir ==> using cwd for session root surfer: session root data dir ($session) set to: surfer: /usr/local/freesurfer/fsfast/MeytalRetinotopy checking for nofix files in 'inflated' Reading image info (/usr/local/freesurfer/subjects/DM) Reading /usr/local/freesurfer/subjects/DM/mri/orig.mgz surfer: Reading header info from /usr/local/freesurfer/subjects/DM/mri/orig.mgz surfer: vertices=118099, faces=236194 tkmedit: Trying to open /usr/local/freesurfer/fsfast/MeytalRetinotopy/SUBJ01/bold/rtopy.DM.lh/tksconcat.dat surfer: Interpreting overlay volume /usr/local/freesurfer/fsfast/MeytalRetinotopy/SUBJ01/bold/rtopy.DM.lh/tksconcat.nii as encoded scalar volume. surfer: curvature read: min=-1.094241 max=1.337460 reading colortable from annotation file... colortable with 36 entries read (originally /autofs/space/terrier_001/users/nicks/freesurfer/average/colortable_desikan_killiany.txt) Found embedded color table in annotation. 8089 vertices did not have an annotation! surfer: single buffered window surfer: tkoInitWindow(DM) Reading mris mask /usr/local/freesurfer/fsfast/MeytalRetinotopy/SUBJ01/bold/rtopy.DM.lh/fieldsign/fsig.nii.gz surfer: using interface /usr/local/freesurfer/tktools/tksurfer.tcl Reading /usr/local/freesurfer/tktools/tkm_common.tcl Reading /usr/local/freesurfer/tktools/tkm_wrappers.tcl Reading /usr/local/freesurfer/lib/tcl/fsgdfPlot.tcl Reading /usr/local/freesurfer/tktools/tkUtils.tcl Successfully parsed tksurfer.tcl reading white matter vertex locations... % ^CKilled Area degli allegati Visualizza anteprima allegato fieldsign_map.tiff Fai clic qui per rispondere o inoltrare il messaggio 7,02 GB (46%) di 15 GB utilizzati Gestisci Ultima attività dell'account: 2 minuti fa Dettagli

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Masks based on 10-20 locations of stimulating electrodes
by Tudor Popescu 04 Sep '14

04 Sep '14

Dear FS team, I have structural data from a training study involving different tDCS groups. I would like to define ROIs (masks) in MNI space corresponding to the approximate cortical area underlying the tDCS electrodes, which were placed on F3&F4 for one group and on P3&P4 in another group (10-20 system positions). I would therefore need to find the approximate centre coordinates, in MNI space, for the F3, F4, P3, P4 electrode positions; however, this is proving challenging. Other papers that have done this (1 <http://www.sciencedirect.com/science/article/pii/S0960982213007136>, 2 <http://www.jneurosci.org/content/31/43/15284.short>) have obtained coordinates for their electrodes (other positions than mine, unfortunately) using various types of converters, such as Brainstorm <http://neuroimage.usc.edu/neuro/BrainStorm>, Comet <http://cone.hanyang.ac.kr/BioEST/Kor/Comets.html>and the Muenster T2T Converter <http://wwwneuro03.uni-muenster.de/ger/t2tconv/conv3d.html>. However, it's proving very time-costly to get any of these to actually produce MNI coordinates at the cortical (not scalp) level for the electrode positions I mentioned. I suppose a scalp-to-cortex projection would have to be done, but I'm still working out how to do it. Clearly many approximations are involved so these won't be very accurate masks, but I want to at least try to define them first. Also, assuming I find the centre coordinates, how would a surface-based mask, of a certain cortical depth and centred around those coordinates, be created in Freesurfer? Many thanks! Best wishes, Tudor

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Vertex space
by lorenzo pasquini 04 Sep '14

04 Sep '14

Dear Freesurfer users, I was wondering if it is possible to transform functional connectivity images (.img format) derived e.g. from an ICA of resting state fMRI data into vertex space reflecting cortical thickness (derived from the Freesurfer pipeline on anatomical data). We have been trying hard with commands as mrivol2surface and bbregister without much success. Do you have any suggestions why it is not working? Can a correspondence of activity and structure be implemented in Freesurfer only if the activation maps are derived from the freesurfer pipeline? Any help is welcome! Cheers, Lorenzo

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Something wrong with fsaverage folder
by Minjeong Wang 04 Sep '14

04 Sep '14

Deal all I have some problem with my fsaverage folder. can i re-download this folder?? or do I need to download the whole freesurfer package again? my freesurfer version is ' freesurfer-i386-apple-darwin11.4.2-stable5-20130514'. Thank you. Sincerely Wang

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Re: [Freesurfer] tracula: bvec-error
by Robby De Pauw 04 Sep '14

04 Sep '14

Hi Barbara and FS-community, I tried everything you suggested, but unfortunately the same error still occurs. Have you found a solution yet? Thanks for your help Best regards, Robby Robby De Pauw, drs. Ghent University Department of Physiotherapy and Rehabilitation Sciences 3B3 De Pintelaan 185 B-9000 Ghent Robby.DePauw(a)Ugent.be Hi Robby, Try this (with the backslashes), applied only to bveclist, if that does not work, also to subjlist and dcmlist at the same time, and let me know please. I have started to process my data with a separate configuration file for every subject :( - as no combination of alterations to the multiple subject configuration file helped me. Maybe you are luckier though. And I am still not sure if there is another way to solve the issue... Thanks, Barbara set bveclist = ( INP_080_LISA_V_1/bvec.txt \ INP_091_KIVA_V_1/bvec.txt \INP_092_LACH_V_1/bvec.txt \ INP_097_LADH_V_1/bvec.txt \WAD_090_MASU_V_1/bvec.txt \ WAD_IWT047_KIMO/bvec.txt \ WAD_IWT043_NAME/bvec.txt \ WAD_IWT021_ALAS/bvec.txt \ WAD_057_PACA/bvec.txt \ WAD_047_JESE/bvec.txt \ WAD_019_NADE/bvec.txt \ WAD_017_CACO/bvec.txt \ INP_IWT046_KATU/bvec.txt \INP_IWT045_INDE/bvec.txt \ INP_IWT007_CIHA/bvec.txt \ INP_IWT001_MOTA/bvec.txt \ INP_082_JAPA/bvec.txt \ INP_081_ELBA/bvec.txt \ INP_079_STEVA/bvec.txt \ INP_063_STCO/bvec.txt \ INP_059_CABR/bvec.txt \ INP_058_NEVA/bvec.txt \ INP_054_LUSO/bvec.txt \ INP_045_ELDA/bvec.txt \ INP_028_JEVE/bvec.txt \ INP_024_LUDE/bvec.txt \ INP_012_JAGU/bvec.txt \ GEZ_078_HEVA/bvec.txt \ GEZ_075_ISKL/bvec.txt \ GEZ_074_FIOR/bvec.txt \ GEZ_049_ELWE/bvec.txt \ GEZ_042_MADE/bvec.txt \ GEZ_038_LIDA/bvec.txt \ GEZ_033_LOVE/bvec.txt \ GEZ_014_GRBU/bvec.txt \ GEZ_006_ELDE/bvec.txt \ GEZ_004_HACO/bvec.txt )

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how generate a head model?
by gamaliel huerta urrea 03 Sep '14

03 Sep '14

Hi Experts I have been studying how to generate a head model, and is said to FreeSurfer software allows better tissue segmentation. I've driven German Gomez Herrero tutorial: http://www.germangh.com/tutorials/dipoles/head_model.htm I have installed freesurfer and matlab. I have verified that the initial elements to generate the model head is MRIs, which have them. I have also verified that using FreeSurfer for segmentation and reconstruction MNE to generate the following areas: 0003-inner_skull-5120.tri 0003-inner_skull-dense.tri 0003-outer_skin-5120.tri 0003-outer_skin-dense.tri 0003-outer_skull-5120.tri 0003-outer_skull-dense.tri My idea is to get the same files to generate my own models and then simulate them power over dipole sources. >From what I have researched the role mri_make_bem_surfaces segmented surfaces, but I only found this material: https://surfer.nmr.mgh.harvard.edu/fswiki/mri_make_bem_surfaces Any help on how to achieve the above-named areas would contribute. Thank you Regards -- *Gamaliel Huerta* *Ingeniería Civil Biomédica* *Universidad de Valparaíso*

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prefrontal gyrification
by melinda dora 03 Sep '14

03 Sep '14

Dear list, how would I get gyrification for the prefrotnal cortex? there is no annotation for this structure? Do I need to make my own? and if so, how? best, Melly

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