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what is the justification for using half that? 7.3 is not high in
general. what scanner are you using?
On 5/8/2023 4:27 AM, Federica Di Antonio wrote:
External Email - Use Caution
Dear experts,
I am here again because I'd like to ask a specification about the
fwhm that the alghoritm evaluates: the main value that I obtained was
7.3 mm; It is an high value for a pv correction.
May I put in half the value?
Because I wonder if the definition of fwhm used by mri_gtmpvc was
different from mine.
Thenk you so much for your availability,
Federica Di Antonio
Il giorno lun 27 feb 2023 alle ore 14:30 Federica Di Antonio
<fedediantoni...@gmail.com> ha scritto:
Thank you so much!
Il giorno gio 15 dic 2022 alle ore 16:24 Douglas N. Greve
<dgr...@mgh.harvard.edu> ha scritto:
I have something called the adaptive GTM that is currently a
"hidden" feature in mri_gtmpvc as it has not been published
yet. You can try it by adding the following flags --opt 1
--opt-tol 4 10e-6 .02 --opt-seg-merge
When this is done, there will be a file called
gtmdir/aux/opt.params.dat The value in that file with be the
fwhm. Run mri_gtmpvc again passing that value as the --psf
Again, this has not been fully evaluated so use at your own risk.
On 12/12/2022 3:10 AM, Federica Di Antonio wrote:
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Dear experts,
Few weeks ago i wrote to this mailing list but I didn't
receive any answer, so I'll try again:
mri_gtmpvc --i pet.nii.gz --reg template.reg.lta --psf FWHM --seg
gtmseg.mgz
--default-seg-merge --auto-mask 1 .01 --mgx .01 --o gtmpvc.output
If I put psf to 0, there is no PVC, and the same happens if I don’t put
that flag at all.t all
Is able mri_gtmpvc to evaluate the fwhm without receiving it from the
user?
I apologize for the repetition,
Thanks for your patience,
Federica
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