Re: [Freesurfer] PETsurfer: PVC without psf of the scanner

2023-05-08 Thread Douglas N. Greve
External Email - Use Caution 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

Re: [Freesurfer] PETsurfer: PVC without psf of the scanner

2023-05-08 Thread Federica Di Antonio
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

Re: [Freesurfer] PETsurfer: PVC without psf of the scanner

2023-02-27 Thread Federica Di Antonio
External Email - Use Caution 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

Re: [Freesurfer] PETsurfer: PVC without psf of the scanner

2022-12-15 Thread Douglas N. Greve
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

[Freesurfer] PETsurfer: PVC without psf of the scanner

2022-12-12 Thread Federica Di Antonio
External Email - Use Caution 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

[Freesurfer] PETsurfer: PVC without psf of the scanner

2022-11-29 Thread Federica
External Email - Use CautionDear experts,  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 About this command, is there the possibility for PETsurfer to compute the fwhm of the psf of