[Camino-users] DTeig Extraction

[Ana Fouto]

Thanks!

2017-06-27 18:12 GMT+01:00 Philip A Cook <cookpa at mail.med.upenn.edu>:

> Yes, you can use fslmerge to combine the vector components.
>
> When translating image formats / moving between software, there's
> potential problems with differences in image orientation conventions. So be
> careful that your scalar images are not flipped left / right and that the
> vectors are correctly oriented. The most common problem is a difference in
> principal axes, eg (x,y,z) in one software is (x,y,-z) in the other. If
> this is the case, you can use fslmaths to fix the component images before
> merging.
>
> > On Jun 27, 2017, at 12:36 PM, Ana Fouto <a.fouto at CAMPUS.FCT.UNL.PT>
> wrote:
> >
> > Thanks!
> >
> > I used the following code:
> >
> > cat restore_fit.bdouble | dteig | voxel2image -components 12 -outputroot
> dteig -header original_data.nii.gz
> >
> > I guess it worked because I got 12 outputs. But I have another question,
> the eigenvectors came in components is it possible to join them in only one
> vector? So I can also overlay with the ones I got from FSL dtifit.
> >
> > Best regards,
> > Ana Fouto
> >
> > 2017-06-27 16:55 GMT+01:00 Philip A Cook <cookpa at mail.med.upenn.edu>:
> > You can use voxel2image to convert the dteig output to NIFTI images. The
> principal eigenvalue will be the first component of the output.
> >
> > http://camino.cs.ucl.ac.uk/index.php?n=Main.Fileformats#toc10
> >
> > > On Jun 27, 2017, at 7:00 AM, Ana Fouto <a.fouto at CAMPUS.FCT.UNL.PT>
> wrote:
> > >
> > > Dear all,
> > >
> > > I'm testing the tensor fitting with RESTORE method and I would to know
> if is there way to extract the principal eigenvalue so I could compare this
> fitting method with the traditional fitting performed by FSL dtifit. The
> purpose of doing this is because I want to load both in fslview and see the
> difference by visual inspection.
> > >
> > > Thanks in advance for the help.
> > >
> > > Best regards,
> > > Ana Fouto
> > > _______________________________________________
> > > Camino-users mailing list
> > > Camino-users at www.nitrc.org
> > > http://www.nitrc.org/mailman/listinfo/camino-users
> >
> >
>
>
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