Hi Anastasia, I ran again trac-all, after checking all bvecs. Some tract are incomplete. Is possible that it depends from an error in my configuration file? I'm using to create bvecs file DTI TABLE CREATOR. Do you advice mi another one? Thanks,
Stefano On Fri, 22 Mar 2013, std...@virgilio.it wrote: > Thank you Anastasia. > I'm checking bvecs/bvals. I obtain it by DTI table creator > (http://godzilla.kennedykrieger.org/~jfarrell/OTHERphilips/GUI.html) > > bvecs/bvals should be done. > > Gradients can be the unique responsable? > > > Stefano > > > > > ----Messaggio originale---- > Da: ayend...@nmr.mgh.harvard.edu > Data: 22-mar-2013 17.07 > A: <std...@virgilio.it> > Cc: <freesurfer@nmr.mgh.harvard.edu> > Ogg: Re: [Freesurfer] R: Re: R: Re: R: Re: R: R: Re: Problem with tracula: > incomplete or lacking tracts > > > Your gradient table is wrong. See where I've marked the corpus callosum in > your screenshot. The eigenvectors are not pointing along the corpus > callosum, but perpendicular to it. So they're off by 90 degrees, which > means the same is true about the vectors in your gradient table. > > On Fri, 22 Mar 2013, std...@virgilio.it wrote: > > > Hi Anastasia - I attacked the screenshots. > > Thanks, > > > > > > Stefano > > > > > > > > ----Messaggio originale---- > > Da: ayend...@nmr.mgh.harvard.edu > > Data: 22-mar-2013 1.39 > > A: <std...@virgilio.it> > > Cc: <freesurfer@nmr.mgh.harvard.edu> > > Ogg: Re: [Freesurfer] R: Re: R: Re: R: R: Re: Problem with tracula: > > incomplete or lacking tracts > > > > > > Hi Stefano - There's nothing in these screenshots that tells you that the > > eigenvectors are correct. These are vectors, so the way to check them is > > to display them as lines. You display dtifit_V1 as lines, overlaid on > > dtifit_FA. Then you see if the lines point in the right direction. > > > > a.y > > > > On Fri, 22 Mar 2013, std...@virgilio.it wrote: > > > > > Here they are attacked. > > > Thanks, > > > > > > > > > Stefano > > > > > > > > > > > > > > > ----Messaggio originale---- > > > Da: ayend...@nmr.mgh.harvard.edu > > > Data: 21-mar-2013 21.50 > > > A: <std...@virgilio.it> > > > Cc: <freesurfer@nmr.mgh.harvard.edu> > > > Ogg: Re: R: Re: [Freesurfer] R: R: Re: Problem with tracula: incomplete or > > > lacking tracts > > > > > > > > > Can you send a screenshot that shows dtifit_V1 and dtifit_FA? > > > > > > On Thu, 21 Mar 2013, std...@virgilio.it wrote: > > > > > > > I have checked the gradient directions. How can I resolve the brain mask > > > > problem. > > > > Can I send you my files of this subject? > > > > Stefano > > > > > > > > > > > > > > > > ----Messaggio originale---- > > > > Da: ayend...@nmr.mgh.harvard.edu > > > > Data: 20-mar-2013 22.46 > > > > A: <std...@virgilio.it> > > > > Cc: <freesurfer@nmr.mgh.harvard.edu> > > > > Ogg: Re: [Freesurfer] R: R: Re: Problem with tracula: incomplete or > > > lacking > > > > tracts > > > > > > > > > > > > There are chunks of the brain missing from the brain mask. This may > > > > cause > > > > some tracts to be incomplete or missing. > > > > > > > > But you should still check that the gradient directions are correct, so > > > > you know if you have multiple problems or just one. The FA map can't > > > > tell > > > > you if the gradient table was correct, you have to check the > > > > eigenvectors > > > > in dtifit_V1 for that. > > > > > > > > > > > > On Wed, 20 Mar 2013, std...@virgilio.it wrote: > > > > > > > > > File attacked > > > > > > > > > > ----Messaggio originale---- > > > > > Da: std...@virgilio.it > > > > > Data: 20-mar-2013 22.34 > > > > > A: <ayend...@nmr.mgh.harvard.edu> > > > > > Cc: <freesurfer@nmr.mgh.harvard.edu> > > > > > Ogg: [Freesurfer] R: Re: Problem with tracula: incomplete or lacking > > > > tracts > > > > > > > > > > Thank you Anastasia. I'm checking gradient table but I would like > > > > underline that I'm noting some holes in > > > > > dti_FA.nii.gz and not in dwi.nii.gz (I have attacked the relative > > > > images). > > > > > > > > > > Stefano > > > > > > > > > > ----Messaggio originale---- > > > > > Da: ayend...@nmr.mgh.harvard.edu > > > > > Data: 20-mar-2013 16.40 > > > > > A: <std...@virgilio.it> > > > > > Cc: <freesurfer@nmr.mgh.harvard.edu> > > > > > Ogg: Re: [Freesurfer] Problem with tracula: incomplete or lacking > > > > > tracts > > > > > > > > > > > > > > > Hi Stefano - Have you checked that your gradient table is correct by > > > > > looking at the output of the tensor fit? > > > > > > > > > > a.y > > > > > > > > > > On Wed, 20 Mar 2013, std...@virgilio.it wrote: > > > > > > > > > > > Hi list and Anastasia, > > > > > > if you remember the last week I had same problems with tracula > > > > > > output: > > > > the final tract are lacking or > > > > > > incomplete for same subjects. Some of these are less wrong (only > > > forceps > > > > major), other have more evident > > > > > > error (you can see this in picture that I have attacked). > > > > > > > > > > > > To resolve this issue I have: > > > > > > > > > > > > 1-checked the correct overlap of dwi and dwi_mask > > > > > > 2-rerun data with new version 5.2 > > > > > > 3-rerun new registration using bbregister (fsl/spm option): for > > > example, > > > > in the subject of the picture > > > > > > attacked, the .mincost file now contains as first value 0.87 > > > > > > (previous > > > > it was 1.1) > > > > > > > > > > > > Please, give me an advise > > > > > > > > > > > > Thanks > > > > > > > > > > > > > > > > > > Stefano > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > ----Messaggio originale---- > > > > > > Da: std...@virgilio.it > > > > > > Data: 12-mar-2013 17.47 > > > > > > A: <ayend...@nmr.mgh.harvard.edu> > > > > > > Cc: <freesurfer@nmr.mgh.harvard.edu> > > > > > > Ogg: [Freesurfer] R: Re: R: Re: Question on tracula and dwi-T1 > > > > > > overlap > > > > > > > > > > > > I got it from mri directory but I'm understanding that this > > > > > > directory > > > > isn't ok.I'm attacking the image > > > > > > from dlabel/diff/aparc+aseg.bbr.nii > > > > > > > > > > > > > > > > > > Stefano > > > > > > > > > > > > > > > > > > > > > > > > ----Messaggio originale---- > > > > > > Da: ayend...@nmr.mgh.harvard.edu > > > > > > Data: 12-mar-2013 17.19 > > > > > > A: <std...@virgilio.it> > > > > > > Cc: <freesurfer@nmr.mgh.harvard.edu> > > > > > > Ogg: Re: [Freesurfer] R: Re: Question on tracula and dwi-T1 overlap > > > > > > > > > > > > > > > > > > Can you please answer my question? I can't really tell if the issue > > > > > > is > > > > due > > > > > > poor dwi-aseg overlap unless you tell me where you got that aseg > > > volume > > > > > > from. > > > > > > > > > > > > On Tue, 12 Mar 2013, std...@virgilio.it wrote: > > > > > > > > > > > > > Thank you Anastasia. What do you think about the issue in the file > > > > attacked > > > > > > > (I'm noting that same subjects are lacking of same > > > > > > > tracts or same tracts are incomplete) > > > > > > > > > > > > > > > > > > > > > Stefano > > > > > > > > > > > > > > > > > > > > > ----Messaggio originale---- > > > > > > > Da: ayend...@nmr.mgh.harvard.edu > > > > > > > Data: 12-mar-2013 17.02 > > > > > > > A: <std...@virgilio.it> > > > > > > > Cc: <freesurfer@nmr.mgh.harvard.edu> > > > > > > > Ogg: Re: [Freesurfer] Question on tracula and dwi-T1 overlap > > > > > > > > > > > > > > > > > > > > > Hi Stefano - Where did you get the aseg.nii.gz from? Anything > > > > > > > that's > > > > in > > > > > > > the dlabel/diff/ directory has been mapped to the same space as > > > > > > > the > > > > DWI, > > > > > > > so those are the volumes that can be compared directly to > > > dwi.nii.gz. > > > > > > > > > > > > > > a.y > > > > > > > > > > > > > > On Tue, 12 Mar 2013, std...@virgilio.it wrote: > > > > > > > > > > > > > > > Hi list, > > > > > > > > > > > > > > > > I have two questions, please. > > > > > > > > > > > > > > > > I'm using version 5.1 to complete my analysis. > > > > > > > > > > > > > > > > 1- I have attacked two images from aseg.nii.gz and dwi.nii.gz of > > > the > > > > same > > > > > > > > subject (figure 1 and 3). You can note the dwi do not overlap to > > > the > > > > aseg. > > > > > > > > How can I resolve this issue? > > > > > > > > > > > > > > > > 2-After TRACULA analysis, I'm noting that same subjects are > > > lacking > > > > of > > > > > > > same > > > > > > > > tracts or same tracts are incomplete (figure 3). > > > > > > > > > > > > > > > > Could it depends from the issue in question 1? I'm thinking to > > > rerun > > > > all > > > > > > > > using version 5.2 but before starting new analyses, I'd like to > > > ask > > > > you > > > > > > > > which is the possible error. > > > > > > > > > > > > > > > > > > > > > > > > Stefano > > > > > > > > > > > > > > > >_______________________________________________ > > > > > > > Freesurfer mailing list > > > > > > > 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 . 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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@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@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@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 . 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