Dear Douglas,
Please see below :
2015-12-15 18:37 GMT+01:00 Douglas N Greve 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>:
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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Best regards, Matthieu
Douglas N. Greve, Ph.D. MGH-NMR Center greve@nmr.mgh.harvard.edu Phone Number: 617-724-2358 Fax: 617-726-7422
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