Freesurfer

freesurfer@nmr.mgh.harvard.edu

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30135 discussions

mri_segstats question
by pfotiad＠nmr.mgh.harvard.edu 24 Apr '14

24 Apr '14

Hi FS community, I had some questions regarding the mri_segstats command: 1) In the excludeid flag, are the ids the ones shown in the FreeSurferColorLUT.txt? 2) In case I would like to measure the mean intensity of the orig file as outlined in the second example in https://surfer.nmr.mgh.harvard.edu/fswiki/mri_segstats: mri_segstats --seg $SUBJECTS_DIR/bert/mri/aseg --ctab $FREESURFER_HOME/FreeSurferColorLUT.txt --nonempty --excludeid 0 --sum bert.aseg.sum --in $SUBJECTS_DIR/bert/mri/orig is the --seg flag necessary in order to calculate only the mean intensity within the skull, or does it serve another purpose? Thanks in advance, Panos

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V1 label
by krista kelly 24 Apr '14

24 Apr '14

Hello, I am looking at cortical thickness and surface area using Freesurfer. I have transferred label V1 from freesurfer onto the brains of my participants and when I view them on the inflated brains in tksurfer , I notice that there are holes in the label. Is this an issue when calculating mean cortical thickness and total surface area estimations? Should I fill these in somehow? I've attached a picture to show as an example. Please let me know if the picture cannot be viewed. Thanks! Krista

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gPPI Toolbox Version 13.1 for SPM has now been released
by MCLAREN, Donald 24 Apr '14

24 Apr '14

Version 13.1 of the gPPI toolbox (previously released versions were 7.12 and 13) is now available at http://www.nitrc.org/projects/gppi Version 13.1 now supports task-models from FSFAST and can read the model structure directly from your FSFAST analysis. Version 13.1 now support robust weighted least squares (rWLS) - requires your first level model to have been generated with the rWLS toolbox. The major changes are: (1) Integrated spm_spm and spm_spm_WB into the software, no patch is needed. P.wb=1 will use the whole brain approach. (2) Added ability to start with FSFAST first level models. (3) Added ability to do rWLS, if the rWLS was used in the first-level models. (4) Removed dependency of gzip on java. (5) A few other bells and whistles. (6) Added script to pre-extract VOI timeseries (7) Added the ability to use upsampled data or neural signal inputs Best Regards, Donald McLaren ================= D.G. McLaren, Ph.D. Research Fellow, Department of Neurology, Massachusetts General Hospital and Harvard Medical School Postdoctoral Research Fellow, GRECC, Bedford VA Website: http://www.martinos.org/~mclaren Office: (773) 406-2464 ===================== This e-mail contains CONFIDENTIAL INFORMATION which may contain PROTECTED HEALTHCARE INFORMATION and may also be LEGALLY PRIVILEGED and which is intended only for the use of the individual or entity named above. If the reader of the e-mail is not the intended recipient or the employee or agent responsible for delivering it to the intended recipient, you are hereby notified that you are in possession of confidential and privileged information. Any unauthorized use, disclosure, copying or the taking of any action in reliance on the contents of this information is strictly prohibited and may be unlawful. If you have received this e-mail unintentionally, please immediately notify the sender via telephone at (773) 406-2464 or email.

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Freesurfer, merci de m'ajouter à votre réseau LinkedIn
by LAOUCHEDI MAKHLOUF via LinkedIn 24 Apr '14

24 Apr '14

LinkedIn ------------ LAOUCHEDI MAKHLOUF souhaite se connecter à vous sur LinkedIn : ------------------------------------------ Freesurfer, J'aimerais vous inviter à rejoindre mon réseau professionnel en ligne, sur le site LinkedIn. LAOUCHEDI Accepter l'invitation de LAOUCHEDI MAKHLOUF http://www.linkedin.com/e/-qq80um-hue3y8a5-y/qaAr-Z_86TRZ5lXG-dA9kZQ49qSe59… Voir le profil de LAOUCHEDI MAKHLOUF http://www.linkedin.com/e/-qq80um-hue3y8a5-y/rso/85174646/IQTY/name/6647116… ------------------------------------------ Vous recevez des invitations par e-mail. Cet e-mail est destiné à Freesurfer List. Découvrez pourquoi nous avons inclus ceci : http://www.linkedin.com/e/-qq80um-hue3y8a5-y/plh/http%3A%2F%2Fhelp%2Elinked… (c) 2012, LinkedIn Corporation. 2029 Stierlin Ct, Mountain View, CA 94043, USA.

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Applying a precomputed transform matrix to an image in free surfer
by Emad Ahmadi 23 Apr '14

23 Apr '14

Hello, I’m having a volume (e.g. dtifit_FA.nii.gz) and a transform matrix (e.g. diff2anatorig.bbr.mat), and I want to apply the transform matrix to the image and generate a transformed image. This is a general question I’m having, but in this particular case, I want to apply the transform matrix (from diffusion space to the anatomical space generated by TRACULA) to the FA map to generate a transformed FA map that can be overlaid on the anatomical images. I wonder if I have to use mri_vol2vol command for doing this, and I don’t know how to provide it with appropriate flags. I’m already having the transform matrix generated by TRACULA (and I don’t want to change it; I just want to apply it to the image!). My crude guess would be something like this: mri_vol2vol --mov <address of dtifit_FA.nii.gz> --o <address of transformed_dtifit_FA.nii.gz> --reg diff2anatorig.bbr.mat Please let me know how I should run this command. Thank you very much, Emad P.S. I know that for this particular example, I can use the anatomical images in dlabel/diff, but the point for me is to learn how to apply a transform matrix to an image and generate a transformed image in freesurfer Emad Ahmadi, MD ----------------------------------------------- Postdoc Research Fellow Department of Radiology Massachusetts General Hospital Harvard Medical School 25 New Chardon Street, Suite 400 Boston, MA 02114 Tel: 617 726 5237 Email: emad(a)nmr.mgh.harvard.edu

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Tumor Segmentation in FreeSurfer
by Mohammed Goryawala 23 Apr '14

23 Apr '14

Hello, I am reposting this question since I have not received any feedback with this issue. I am interested in understanding if tumor segmentation can be carried out using FreeSurfer. On examining the stats file we do see a tumor volume reported. I was wondering how this is calculated. Thanks Mohammed

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Subfields on 1.5 Tesla
by Alan Francis 23 Apr '14

23 Apr '14

Hi Koen & FreeSurfers: I have received a manuscript to review for possible publication. The authors have used the subfields algorithm on 1.5T scans and obtained a parcellation with values. They have drawn some major conclusions on the basis of the findings. My understanding is that this method can only be done on 3T. Is the 1.5T results valid? Please advice. thanks, Alan Francis

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Re: [Freesurfer] mri_convert Siemens .IMA error
by Douglas N Greve 22 Apr '14

22 Apr '14

Hi Paul, I was finally able to track down the bug. You can get a new version from here: ftp://surfer.nmr.mgh.harvard.edu/pub/dist/freesurfer/5.3.0-patch/mri_conver… copy it to $FREESURFER_HOME/bin/mri_convert doug On 12/08/2013 06:28 PM, prasser wrote: > Hi Doug, > > Sorry for the delay. Please find 1.IMA attached. > > Thanks, > Paul > > > ---- On Fri, 06 Dec 2013 13:15:29 -0800 *Douglas N Greve > <greve(a)nmr.mgh.harvard.edu>* wrote ---- > > > Can you upload a single dicom file to me? One should be enough > > On 12/06/2013 04:02 PM, Paul Rasser wrote: > >> > >> We are using Freesurfer5.3 on os x 10.8. > >> > > > > > > On 6 Dec 2013, at 2:19 pm, Douglas Greve > <greve(a)nmr.mgh.harvard.edu <mailto:greve@nmr.mgh.harvard.edu> > > <mailto:greve@nmr.mgh.harvard.edu>> wrote: > > > >> > >> This may be a known problem. What version of FS are you using and > >> what is your platform? > >> doug > >> > >> > >> > >> > >> On 12/5/13 3:26 PM, prasser wrote: > >>> Thanks, but the orientation shift appears as a skew. Also, we > don't > >>> have any fiducial markers for this group of scans so it would > be a > >>> little tricky to confirm the correct application of > >>> -out_orientation. I would rather let mri_convert handle this from > >>> the .IMAs. > >>> > >>> Is there any additional information I can provide from from > the .IMA > >>> header etc that could shed some light on why mri_convert is > behaving > >>> in this way? > >>> > >>> Thanks, > >>> Paul > >>> > >>> > >>> > >>> ---- On Wed, 04 Dec 2013 22:11:27 -0800 *Mark Plantz > >>> <markplantz2016(a)u.northwestern.edu > <mailto:markplantz2016@u.northwestern.edu>>* wrote ---- > >>> > >>> Not sure if this helps, but you can alter the output orientation > >>> using the flag "--out_orientation" followed by LIA (for > >>> example). Maybe the input file needs to be in a specific > >>> orientation before it can be converted properly. > >>> > >>> > >>> On Wed, Dec 4, 2013 at 9:56 PM, prasser <prasser(a)zoho.com > <mailto:prasser@zoho.com> > >>> <mailto:prasser@zoho.com>> wrote: > >>> > >>> Hi, > >>> > >>> I'm currently having problems converting .IMA files > >>> collected from a Siemens Skyra to .mgz format using > >>> mri_convert from Freesurfer5.3 on os x. > >>> > >>> Using: > >>> > >>> mri_convert -it siemens -ot mgz 1.IMA test.mgz > >>> > >>> I get the error message: > >>> > >>> does not contain a Siemens ASCII header has this file been > >>> anonymised? > >>> > >>> ERROR: cannot unpack mosiacs without ASCII header > >>> > >>> The .IMA files have been taken straight from the scanner > >>> console. > >>> > >>> If I try: > >>> > >>> mri_convert -it dicom -ot mgz 1.IMA test.mgz > >>> > >>> this creates the .mgz, however there is an orientation shift > >>> and a vertical stripe artefact appears in the sagittal view > >>> (please see attached) when compared to the original .IMA. > >>> > >>> Any suggestions on how to convert the Siemens .IMA files > >>> correctly? > >>> > >>> Thanks, > >>> > >>> Paul > >>> > >>> > >>> _______________________________________________ > >>> Freesurfer mailing list > >>> Freesurfer(a)nmr.mgh.harvard.edu > <mailto:Freesurfer@nmr.mgh.harvard.edu> > >>> <mailto:Freesurfer@nmr.mgh.harvard.edu> > >>> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > >>> > >>> > >>> The information in this e-mail is intended only for the > >>> person to whom it is > >>> addressed. If you believe this e-mail was sent to you in > >>> error and the e-mail > >>> contains patient information, please contact the Partners > >>> Compliance HelpLine at > >>> http://www.partners.org/complianceline . If the e-mail was > >>> sent to you in error > >>> but does not contain patient information, please contact the > >>> sender and properly > >>> dispose of the e-mail. > >>> > >>> > >>> _______________________________________________ > >>> Freesurfer mailing list > >>> Freesurfer(a)nmr.mgh.harvard.edu > <mailto:Freesurfer@nmr.mgh.harvard.edu> > >>> <mailto:Freesurfer@nmr.mgh.harvard.edu> > >>> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > >>> > >>> > >>> The information in this e-mail is intended only for the person > >>> to whom it is > >>> addressed. If you believe this e-mail was sent to you in error > >>> and the e-mail > >>> contains patient information, please contact the Partners > >>> Compliance HelpLine at > >>> http://www.partners.org/complianceline . If the e-mail was sent > >>> to you in error > >>> but does not contain patient information, please contact the > >>> sender and properly > >>> dispose of the e-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 > >> > >> _______________________________________________ > >> Freesurfer mailing list > >> Freesurfer(a)nmr.mgh.harvard.edu > <mailto:Freesurfer@nmr.mgh.harvard.edu> > <mailto:Freesurfer@nmr.mgh.harvard.edu> > >> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > >> > >> > >> The information in this e-mail is intended only for the person to > >> whom it is > >> addressed. If you believe this e-mail was sent to you in error and > >> the e-mail > >> contains patient information, please contact the Partners > Compliance > >> HelpLine at > >> http://www.partners.org/complianceline . If the e-mail was sent to > >> you in error > >> but does not contain patient information, please contact the > sender > >> and properly > >> dispose of the e-mail. > > -- > Douglas N. Greve, Ph.D. > MGH-NMR Center > greve(a)nmr.mgh.harvard.edu <mailto:greve@nmr.mgh.harvard.edu> > Phone Number: 617-724-2358 > Fax: 617-726-7422 > > Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting > FileDrop: https://gate.nmr.mgh.harvard.edu/filedrop2 > www.nmr.mgh.harvard.edu/facility/filedrop/index.html > Outgoing: > ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/ > > -- Douglas N. Greve, Ph.D. MGH-NMR Center greve(a)nmr.mgh.harvard.edu Phone Number: 617-724-2358 Fax: 617-726-7422 Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting FileDrop: https://gate.nmr.mgh.harvard.edu/filedrop2 www.nmr.mgh.harvard.edu/facility/filedrop/index.html Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/

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Re: [Freesurfer] Extract vertex-wise cortical thickness, surface area and lgi values in ascii files?
by sabin khadka 22 Apr '14

22 Apr '14

Hi all, I ran mri_surf2surf and then mris_convert to get vertexwise thickness and surface area values in ascii files. I found that some vertices had negative values of surface area for few subjects. Should not surface area values be positive only? -Sabin On Thursday, April 17, 2014 10:30 AM, sabin khadka <sabinkhdk(a)yahoo.com> wrote: Ahh. Great. Thanks you very much for the information. I ran mri_surf2surf and then mris_convert to get thickness and surface area vertex wise values. I found that some vertices had negative values of surface area for few subjects. Should not surface area values be positive only? -Sabin On Thursday, April 17, 2014 10:10 AM, Bruce Fischl <fischl(a)nmr.mgh.harvard.edu> wrote: yes, you can use mri_surf2surf first to map them to fsaverage, then convert them to ascii On Thu, 17 Apr 2014, sabin khadka wrote: > Hi Bruce, > Thanks for the reply. I was wondering if I have to somehow resample or map > to fsaverage so as to have same # of vertices across all subjects. I tried > using mris_convert as you suggested above but I can see that different > subjects have different #of vertices. > > Thanks for help. > > -Sabin > On Thursday, April 17, 2014 9:29 AM, Bruce Fischl > <fischl(a)nmr.mgh.harvard.edu> wrote: > Hi Sabin > > mris_convert can convert binary "curvature" format files to ascii ones if > the output file has the extension asc. Something like: > > mris_convert -c lh.thickness lh.orig lh.thickness.asc > > this will give you a 5 column ascii file in the format > <vertex index> <x> <y> <z> <thickness> > > cheers > Bruce > > On Thu, 17 Apr 2014, > sabin khadka > wrote: > > > Hi all, > > I want to extract to extract thickness, area and lgi values vertex wise in > > ascii files for group of subjects. Could anyone suggest me on how to do > it. > > > > Thank you for your help. > > > > -Sabin > > > > > > > > The information in this e-mail is intended only for the person to whom it is > addressed. If you believe this e-mail was sent to you in error and the > e-mail > contains patient information, please contact the Partners Compliance > HelpLine at > http://www.partners.org/complianceline . If the e-mail was sent to you in > error > but does not contain patient information, please contact the sender and > properly > dispose of the e-mail. > > > > >

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CUDA PC build
by Chiu, Bryan (PHTH) 22 Apr '14

22 Apr '14

Hi, Trying to build a CUDA enabled PC for the lab to do processing for a variety of neuroimaging programs including Freesurfer and FSL. Want to know input from others about the 'recommended' PC and what the 'standard' is based on the current PC prices and technology. Sample build is from NCIX Canada, if curious. SKU Description Price Amount 84500 ASUS Z87-A ATX LGA1150 Z87 DDR3 3PCI-E16 2PCI-E1 2PCI CrossFireX/SLI SATA3 USB3.0 HDMI Motherboard [Reg. $159.99] $154.99 $154.99 93608 ADATA Xpg V1.0 16GB DDR3-1600 CL9-9-9-24 2X8GB Dual Channel Memory Kit Black [Reg.$189.99] $149.99 $149.99 82953 ASUS DRW-24F1ST 24X SATA DVD Writer Black $24.98 $24.98 65701 Seagate Barracuda 1TB 7200RPM 64MB SATA 6Gbps 3.5in Internal Hard Drive - OEM [Reg. $73.44] $64.99 $64.99 76367 ASUS GeForce GTX 660 OC DirectCU 1020MHZ 2GB 6.0GHZ GDDR5 2xDVI HDMI DisplayPort PCI-E Video Card $229.99 $459.98 81327 Intel Core i5 4670K Unlocked Quad Core 3.4GHZ Processor LGA1150 Haswell 6MB Cache Retail [Reg. $269.98] $249.99 $249.99 38650 Corsair Professional HX850W 850W ATX 12V 70A 24PIN ATX Modular Power Supply Active PFC 140mm Fan $169.98 $169.98 67326 Antec Three Hundred Two Mid Tower Gaming Case 302 ATX 3X5.25 6X3.5INT No PS Front USB3.0 & Audio [Reg. $77.98] $69.99 $69.99 In short -- runs with 16 Gb RAM, 3.4 GHz Quad core, with 2 GTX 660s in SLI. Final quote comes out to $1506 CAD. This is my first time attempting to build a PC of this type, so I still have tons of questions regarding minor details. I think spec wise the computer is good, unless others have recommendations from previous experience. Most likely will be running a flavour of Linux on this rig. Any suggestions for what the 'standard' for this build would be? I'm thinking CentOS based on older webmail threads, but I would prefer Ubuntu if possible. I would also like it to be user friendly so the technologically challenged researchers can get the software up and running. Is there anything else I should think about before I order? I want to make sure I have all of my bases covered before ordering and getting this rig going. Regards, - Bryan Chiu

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