Freesurfer

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30088 discussions

Significance of value in sig.nii file under 'polar' directory
by Cesar Echavarria 06 Dec '13

06 Dec '13

Hi freesurfers, I conducted a retinotopic analysis for one of my subjects. I was wondering if any of you knew what is represented by the values in the sig.nii file under the 'polar' directory that the process puts out. I appreciate your help! Cesar

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label to curv .mgh
by Gregory Kirk 06 Dec '13

06 Dec '13

hello, trying to convert a medial wall label to a curv format .mgh file running mris_convert --label lh.Medial_wall.label lh.white foo.mgh tried a few things but not getting there, what does it want ? thank You

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refeventdur in mkanalysis-sess
by 王晗 06 Dec '13

06 Dec '13

Hi, I am making an analysis in freesurfer 5.1 using mkanalysis-sess and I am a bit confused about the flag refeventdur. In the help it is said that it should be set to the event duration if the events have similar durations. But I have two conditions with different durations that one lasts for 1.6 second and another lasts 0.8s in a event-related design paradigm, and my fixation condition lasts for 8 second. What should I set the refeventdur to? How does this value influence the design matrix? Thanks, WangHan

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Fwd: Re: Fwd: Some problems of the brain image after recon-all
by Xiaojun.Huang 06 Dec '13

06 Dec '13

hi all, I am processing the 3D PD patients brain now . After recon-all running, the segmentations of the GM and WM is not accurate although the original data is normal. additionally, when I use the TKSurfer Tools to review the 3D brain,it is reverse. More informations and images as follows: -------- 原始消息 -------- 主题: Re: [Freesurfer] Fwd: Some problems of the brain image after recon-all 日期: Thu, 05 Dec 2013 12:45:10 +0800 发件人: Xiaojun.Huang <lvdosha(a)gmail.com> 收件人: Bruce Fischl <fischl(a)nmr.mgh.harvard.edu> Hi Bruce, Sorry for reply late. The data were provided by a hospital and the input data were 3D images.Some image informations as followed(eg.PDSub_02): 0008,103E,Series Description=Ax 3D VBM 0008,1090,Manufacturer's Model Name=SIGNA EXCITE 0018,0000,Acquisition Group Length=484 0018,0020,Scanning Sequence=GR 0018,0021,Sequence Variant=SS\SP\SK 0018,0022,Scan Options=FAST.GEMS\EDR.GEMS\FILTERED.GEMS 0018,0023,MR Acquisition Type=3D 0018,0025,Angio Flag=N 0018,0050,Slice Thickness=1 0018,0080,Repetition Time [TR, ms]=7.652 0018,0081,Echo Time [TE, ms]=3.312 0018,0082,Inversion Time=0 0018,0083,Number of Averages=1 0018,0084,Imaging Frequency=127.755675 0018,0085,Imaged Nucleus=1H 0018,0086,Echo Number= 0018,0087,Magnetic Field Strength=3 0018,0088,Spacing Between Slices=1 0018,0091,Echo Train Length=1 0018,0093,Percent Sampling=100 0018,0094,Percent Phase Field View=100 0018,0095,Pixel Bandwidth=97.6562 0018,1020,Software Version=12\LX\MR Software release.12.0.M5A.0819.a 0018,1030,Protocol Name=PDD-YANGWANQUN/4 0018,1310,Acquisition Matrix=0, 256, 228, 0 0018,1312,Phase Encoding Direction=ROW 0018,1314,Flip Angle=13 0018,1315,Variable Flip Angle Flag=N 0028,0010,Rows=512 0028,0011,Columns=512 It comes up in the proper orientation in tkmedit in three orientations as attachment(eg.coromaland saggital view). Tanks, Xiaojun. 于 2013/12/4 22:45, Bruce Fischl 写道: > Hi Xiaojun > > we need more details in order to help you. What was your input data? > What format was it in? Does it come up in the proper orientation in > tkmedit? What kind of acquisition (resolution, type, etc...) did you use? > > cheers > Bruce > On Wed, 4 Dec 2013, Xiaojun.Huang wrote: > >> >> >> >> -------- 原始消息 -------- >> 主题: >> Some problems of the brain image after recon-all >> 日期: >> Tue, 03 Dec 2013 21:33:41 +0800 >> 发件人: >> Xiaojun.Huang <lvdosha(a)gmail.com> >> 收件人: >> Freesurfer(a)nmr.mgh.harvard.edu >> >> >> Hi, >> >> I am processing the 3D PD patients brain now . After recon-all >> running, the segmentations of the GM and WM is not accurate >> although the original data is normal. additionally, when I use the >> TKSurfer Tools to review the 3D brain,it is reverse. (eg. >> PDSub_02 in the attach files) >> >> It is the first time for me to use Freesurfer.I'm sorry for the >> trouble I'm giving you.And looking forward your reply. >> >> Thanks, >> Xiaojun >> >> 2013.12.3 >> >> >> >> >> > > > 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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infant template
by Supreet kaur 06 Dec '13

06 Dec '13

Dear Freesurfer experts, I'm involved in the neonatal research (infants less than 1 year of age). I tried running the recon-all command, however it fails and I get error messages at the Talriach registration step. Is there any way in which I can incorporate our own custom infant atlas or template in place of the Talriach space, which is for adults. I'd really appreciate your help and fedback on this. Thanks in advance, Sincerely, Supreet kaur, Biomedical research engineer, Nationwide Childrens Hospital, Columbus, OH <%28614%29355-3509>

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v5.3.0 nu.mgz, -1): could not open file
by Bondarenko M. 06 Dec '13

06 Dec '13

Hi I am trying to Install Freesurfer V 5.3.0 on a cluster in Southampton University but when I run a job on the cluster it always fails. I have checked all configurations files, I have looked to your manual many times but still can not figure out the problem. Could you please help me out with installation. cat $FREESURFER_HOME/build-stamp.txt => freesurfer-Linux-centos4_x86_64-stable-pub-v5.3.0 -- which mri_convert => /local/software/rh53/freesurfer/5.3.0/freesurfer/bin/mri_convert I have included my bash script to run a job and also output file. I am getting the error: " mghRead(/home/mb4/test/free/track2010FS/21655/mri/nu.mgz, -1): could not open file mri_em_register: could not open input volume nu.mgz. " I have also try to run "fixup_mni_paths" but it did not help. I have installed FS V4.0 and I did not have such a problem. Could you please have a look to my output and give me some advises. Regards, Max

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R: Re: R: Re: R: Re: Linear regression
by stdp82＠virgilio.it 06 Dec '13

06 Dec '13

Dear Rujing, After recon-all and qcache, for correlation analysis, I have performed qdec by using a matrix that contains NPS test, 3 nuisance factors and one groups.For groups analysis I have applied mri_glmfit as described in the guide. Nothing in particular. Stefano ----Messaggio originale---- Da: charujing123(a)163.com Data: 5-dic-2013 2.15 A: "stdp82"<stdp82(a)virgilio.it>, "freesurfer"<freesurfer(a)nmr.mgh.harvard.edu> Ogg: Re: [Freesurfer] R: Re: R: Re: Linear regression body{FONT-SIZE:12pt; FONT-FAMILY:宋体,serif;} --> Dear Stefano, I also want to make a correlation analysis between thickness and behavior data. Would you please send me your precious scripts for group analysis( unpaired t-test and correlation analysis) after recon-all? I want to study it if I get your permission. Thanks. All the best. 2013-12-05 blockquote { margin-top:0; margin-bottom:0; margin-left:2em; } body { padding:0; margin:0; } --> blockquote { margin-top:0; margin-bottom:0; margin-left:2em; } body { padding:0; margin:0; } --> blockquote { margin-top:0; margin-bottom:0; margin-left:2em; } body { padding:0; margin:0; } --> blockquote { margin-top:0; margin-bottom:0; margin-left:2em; } body { padding:0; margin:0; } --> blockquote { margin-top:0; margin-bottom:0; margin-left:2em; } body { padding:0; margin:0; } --> blockquote { margin-top:0; margin-bottom:0; margin-left:2em; } body { padding:0; margin:0; } --> blockquote { margin-top:0; margin-bottom:0; margin-left:2em; } body { padding:0; margin:0; } --> blockquote { margin-top:0; margin-bottom:0; margin-left:2em; } body { padding:0; margin:0; } --> Rujing Zha 发件人：<stdp82(a)virgilio.it> 发送时间：2013-12-05 02:06 主题：[Freesurfer] R: Re: R: Re: Linear regression 收件人："greve"<greve(a)nmr.mgh.harvard.edu>,"freesurfer"<freesurfer(a)nmr.mgh.harvard.edu> 抄送： Dear Douglas, thank you very much for you kind reply. In the paper I have 3 groups (2 diseases and 1 controls). I have performed cortical thickness analysis among groups, individuating relevant difference in the posterior regions. Next, for one group, I have used qdec to individuate statistically significant regions where NPS test scores and thickness were correlated. 3 nuisance factors was also added to regressor. All results were corrected for multiple comparisons by using a pre-cached cluster-wise Monte-Carlo Simulation. qdec analysis results have individuated a "composite region" (superior parietal cortex and precuneus) where NPS correlated with thinning. Now, if I understand, I should extract the mean thickness from superior parietal cortex and precuneus and I should perform a linear regression (and partial correlation) with an other statistical program (SPSS for example). Is there a better way to perform a regression the most possible similar to qdec computation? Stefano ----Messaggio originale---- Da: greve(a)nmr.mgh.harvard.edu Data: 4-dic-2013 17.35 A: <stdp82(a)virgilio.it>, <freesurfer(a)nmr.mgh.harvard.edu> Ogg: Re: R: Re: [Freesurfer] Linear regression On 12/02/2013 03:14 PM, stdp82(a)virgilio.it wrote: > Tank you very much. > > A-Do you mean the partial correlation coeff (PCC) at each voxel > averaged over region? > Finally a linear regression is done between cortical thickness of a > composite region and NPS. However the authors discuss every individual > region as related to disease. So a table with partials correlations of > individuals ROIs with NPS seems useful to support the discussion. What did you do in the paper? The reviewer mentions a "composite region". Did you average the thickness over that region and then do the regression with NPS? > > B- I'd like to obtain the covariance matrix of the regression made > between cortical thickness, group and covariates. How can I do it? > I'm not sure what you mean. Would this be a different matrix for each > vertex? > I cite the referee: "The authors must provide the covariance matrix of > the regression made between cortical thickness, group and covariates > as supplementary information in order to increase the value of the > results." Sorry, I don't understand what the reviewer is asking for. doug > > I don't have Matlab for mri_glmfit_pcc matlab. > > Stefano > > > > > ----Messaggio originale---- > Da: greve(a)nmr.mgh.harvard.edu > Data: 2-dic-2013 20.47 > A: <freesurfer(a)nmr.mgh.harvard.edu> > Ogg: Re: [Freesurfer] Linear regression > > > On 12/02/2013 02:22 PM, stdp82(a)virgilio.it wrote: > > Hi list, > > > > I have some questions, please. > > > > I performed linear regression by qdec to find the regions where the > > cortical thinning correlates with neuropsychological test (NPS), > > taking in account 3 nuisance factors. > > > > A- I individuated some posterior regions and now I'd like to build a > > table with partials correlations of individuals ROIs with NPS. How can > > I obtain the values for each region? > Do you mean the partial correlation coeff (PCC) at each voxel averaged > over region? You can get PCC maps using the mri_glmfit_pcc matlab > command. You can then do the averaging over region using mri_segstats. > > > > B- I'd like to obtain the covariance matrix of the regression made > > between cortical thickness,group and covariates. How can I do it? > I'm not sure what you mean. Would this be a different matrix for each > vertex? > > > > C- Is there a specific reference for qdec? > No, it is just a GLM so any GLM reference will do. > > > > Thank you very much, > > > > > > Stefano > > > > > > > > > > > > _______________________________________________ > > Freesurfer mailing list > > Freesurfer(a)nmr.mgh.harvard.edu > > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > -- > 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/ > > _______________________________________________ > Freesurfer mailing list > Freesurfer(a)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 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] Patch for -autorecon2
by Douglas Greve 05 Dec '13

05 Dec '13

Sorry, I thought I had updated that link. Use this one and download the program for your OS ftp://surfer.nmr.mgh.harvard.edu/pub/dist/freesurfer/5.3.0-patch/ On 12/5/13 3:42 PM, Isabelle Deschamps, Miss wrote: > I tried the link, but when I click on it, I get the following error > > ALERT 550 Failed to change directory. > > I cannot download it. > > Thanks, > > isabelle > On Dec 5, 2013, at 1:37 PM, Douglas N Greve <greve(a)nmr.mgh.harvard.edu> wrote: > >> You can find the link on our release note page >> http://surfer.nmr.mgh.harvard.edu/fswiki/ReleaseNotes >> >> On 12/05/2013 12:16 PM, Isabelle Deschamps, Miss wrote: >>> Dear FreeSurfer experts, >>> >>> Would it be possible to have the patch for this problem "Creation of the aseg.stats table fails when only running -autorecon1 or -autorecon2 because ribbon.mgz is not present"? >>> >>> Thank you very much in advance, >>> >>> Isabelle >>> _______________________________________________ >>> Freesurfer mailing list >>> Freesurfer(a)nmr.mgh.harvard.edu >>> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer >>> >>> >> -- >> 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/ >> >> _______________________________________________ >> Freesurfer mailing list >> Freesurfer(a)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. >> > >

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possible pial surface editing
by Gennan Chen 05 Dec '13

05 Dec '13

Hi! All, We ran into a few cases which the wm matter surface is pretty decent but pial surface did not go far enough to include all gray matter. Is there a way to fix this? Gen ________________________________ This email message is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply email and destroy all copies of the original message. If you are the intended recipient, please be advised that the content of this message is subject to access, review and disclosure by the sender's Email System Administrator

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nuisance variable in qdec
by Cat Chong 05 Dec '13

05 Dec '13

Dear Doug, Thank you for your instantaneous response! Correcting for disease burden was actually a reviewer comment. We calculated mean cortical thickness estimates for regions that showed vertex-wise age-related cortical thickness differences between groups (using qdec) and then graphed out the slope aging-patterns between normal controls and patients, by extracting the data into SPSS. Basically, our findings indicated that for selected regions, the patients showed a steeper age-related decline. It was suggested by the reviewer to correct the correlation between age and cortical thickness for disease burden in the patient group (using partial correlations in SPSS). Would this be an alternative way? It would sure safe us from re-running our data:) Very Best Regards, Catherine

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