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" <gr...@nmr.mgh.harvard.edu 
> <mailto:gr...@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
>     <gr...@nmr.mgh.harvard.edu <mailto:gr...@nmr.mgh.harvard.edu>
>     > <mailto:gr...@nmr.mgh.harvard.edu
>     <mailto:gr...@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
>     >     > <matthieuvanhou...@gmail.com
>     <mailto:matthieuvanhou...@gmail.com>
>     >     <mailto:matthieuvanhou...@gmail.com
>     <mailto:matthieuvanhou...@gmail.com>>
>     >     <mailto:matthieuvanhou...@gmail.com
>     <mailto:matthieuvanhou...@gmail.com>
>     >     <mailto:matthieuvanhou...@gmail.com
>     <mailto:matthieuvanhou...@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
>     >     >
>     >     >
>     >     >
>     >     >
>     >     > _______________________________________________
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>     <mailto:Freesurfer@nmr.mgh.harvard.edu>>
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>     >
>     >     --
>     >
>     >
>     > Best regards,
>     > Matthieu
>     >
>     >     Douglas N. Greve, Ph.D.
>     >     MGH-NMR Center
>     > gr...@nmr.mgh.harvard.edu <mailto:gr...@nmr.mgh.harvard.edu>
>     <mailto:gr...@nmr.mgh.harvard.edu <mailto:gr...@nmr.mgh.harvard.edu>>
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>     --
>     Douglas N. Greve, Ph.D.
>     MGH-NMR Center
>     gr...@nmr.mgh.harvard.edu <mailto:gr...@nmr.mgh.harvard.edu>
>     Phone Number: 617-724-2358 <tel:617-724-2358>
>     Fax: 617-726-7422 <tel:617-726-7422>
>
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-- 
Douglas N. Greve, Ph.D.
MGH-NMR Center
gr...@nmr.mgh.harvard.edu
Phone Number: 617-724-2358
Fax: 617-726-7422

Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting
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www.nmr.mgh.harvard.edu/facility/filedrop/index.html
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