Not necessarily. It needs a good segmentation, so, to the extent that v6
has a better segmentation then v6 is better.
On 12/15/2015 02:57 PM, Matthieu Vanhoutte wrote:
>
> Thanks Douglas for the answer !
>
> But isn't PVC design for better working in terms of results with
> v6_beta than v5.3 ?
>
> Best regards,
>
> Matthieu
>
> Le 15 déc. 2015 19:02, "Douglas N Greve" <greve@nmr.mgh.harvard.edu
> <mailto:greve@nmr.mgh.harvard.edu>> a écrit :
>
> It is not subsegmented in 6.0 either:). When you run gtmseg, it will
> create the new segmentation that include pons and a few other things
>
> On 12/15/2015 12:56 PM, Matthieu Vanhoutte wrote:
> > Dear Douglas,
> >
> > Please see below :
> >
> > 2015-12-15 18:37 GMT+01:00 Douglas N Greve
> <greve@nmr.mgh.harvard.edu <mailto:greve@nmr.mgh.harvard.edu>
> > <mailto:greve@nmr.mgh.harvard.edu
> > <mailto:Freesurfer@nmr.mgh.harvard.edu> <mailto:greve@nmr.mgh.harvard.edu>>>:
> >
> >
> >
> > On 12/15/2015 04:46 AM, Matthieu Vanhoutte wrote:
> > > Dear experts,
> > >
> > > Could anyone answer to my questions below ?
> > >
> > > Thanks !
> > >
> > > Best regards,
> > > Matthieu
> > >
> > > 2015-12-10 10:10 GMT+01:00 Matthieu Vanhoutte
> > > <matthieuvanhoutte@gmail.com
> <mailto:matthieuvanhoutte@gmail.com>
> > <mailto:matthieuvanhoutte@gmail.com
> <mailto:matthieuvanhoutte@gmail.com>>
> > <mailto:matthieuvanhoutte@gmail.com
> <mailto:matthieuvanhoutte@gmail.com>
> > <mailto:matthieuvanhoutte@gmail.com
> <mailto:matthieuvanhoutte@gmail.com>>>>:
> > >
> > > Dear FS experts,
> > >
> > > 1) First Is it possible to use the partial volume
> correction
> > > provided in the v6 beta version of FreeSurfer despite
> the fact
> > > that recon-all have been done for all subjects with
> the v5.3 ?
> > >
> > Yes
> >
> >
> > Great ! but isn't it a problem for computing rSUV with pons as
> > reference structure since brainstem isn't sub-segmented in the
> version
> > 5.3 of recon-all ?
> >
> > >
> > >
> > > 2) Does this method supply an intensity normalisation for
> > PET images ?
> > >
> > What do you mean by intensity normalization? For uptake
> analysis,
> > people
> > usually use SUV (standard uptake values where the whole image is
> > scaled
> > by a value related to the injection mass and subject weight)
> or you
> > choose a reference structure to scale by (often called rSUV for
> > relative). By default mri_gtmpvc uses pons, but you can
> choose any
> > structure you want with the --rescale flag
> >
> > >
> > >
> > > Best regards,
> > > Matthieu
> > >
> > >
> > >
> > >
> > > _______________________________________________
> > > Freesurfer mailing list
> > > Freesurfer@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
> >
> > --
> >
> >
> > Best regards,
> > Matthieu
> >
> > Douglas N. Greve, Ph.D.
> > MGH-NMR Center
> > greve@nmr.mgh.harvard.edu <mailto:greve@nmr.mgh.harvard.edu>
> <mailto:greve@nmr.mgh.harvard.edu <mailto:greve@nmr.mgh.harvard.edu>>
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> <tel:617-724-2358 <tel:617-724-2358>>
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> <tel:617-726-7422>>
> >
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>
> --
> Douglas N. Greve, Ph.D.
> MGH-NMR Center
> greve@nmr.mgh.harvard.edu <mailto:greve@nmr.mgh.harvard.edu>
> Phone Number: 617-724-2358 <tel:617-724-2358>
> Fax: 617-726-7422 <tel:617-726-7422>
>
> Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting
> <http://surfer.nmr.mgh.harvard.edu/fswiki/BugReporting>
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> www.nmr.mgh.harvard.edu/facility/filedrop/index.html
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--
Douglas N. Greve, Ph.D.
MGH-NMR Center
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
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