Dear Freesurfer experts,
I'm processing ADNI PET data (AV45 and AV1451) in a surface-based approach following your guidelines (https://surfer.nmr.mgh.harvard.edu/fswiki/PetSurfer). Do you guys have any experience with ADNI data? I would like to apply partial volume correction but I don't know which is the FWHM of the point-spread function. I'm taking the most pre-processed images (i.e. co-reg, avg, std image and vox siz, uniform resolution), and ADNI say that "Each image set is filtered with a scanner-specific filter function (can be a non-isotropic filter) to produce images of a uniform isotropic resolution of 8 mm FWHM, the approximate resolution of the lowest resolution scanners used in ADNI."
Would using a 8mm FWHM for the PV correction be a correct approach? Any help would be greatly appreciated.
Thanks in advance Edu V.