I'm not sure why you would use the ROI volume from the PET analysis at all. Why not just use the data in the aseg.stats or the ?h.aparc.stats?External Email - Use Caution
Thank you, Dr. Greve
I checked all about your comment.
I have questions more.1. I found that volumes or counts in gtm.stats.dat are for native PET space.If co-registered PET onto corresponding MRI(i.e. MRI space) is available using rbv.nii.gz from mri_gtmpvc,
Or if you recommend it by gtm.stats.dat, I can use gtm.stats.dat --rescale (reference regions) for SUVR in PET space.What do you prefer or recommend?
2. I used mri_vol2vol --mov rbv.nii.gz --targ original_PET.nii --o test.nii --regheaderbecause rbv.nii.gz is in different space.but when overlaid with them, registration is not correct. (WHY)
I just checked, and the RBV is in the anatomical space and so --regheader is not appropriate. if you really want to map it back to the pet space, you will need to supply a registration file, but there is probably no reason to do this.rbv.nii.gz is in different space, even not in T1.mgz space. (DKT space)
I just wanted to use the pv-corrected image for image processing.and you also said, smoothing is required after PVC. (Surface or volume based smoothing (resonable).
Best regards,S
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