Re: [Freesurfer] Does PETSurfer calculate ROI-wise values by averaging?

External Email - Use Caution Found it. Thank you very much! Thanks, ZZ On Apr 26, 2022, 12:28 -0700, Zhener Zhang , wrote: Thank you, Douglas! Is it possible to extract the number of voxels in each segment [of the FreeSurfer DK atlas]? We are hoping to ‘reverse’ the spatial

Re: [Freesurfer] Does PETSurfer calculate ROI-wise values by averaging?

:34 -0700, Zhener Zhang , wrote: Hi Douglas, Thanks! We ran the following for one of our subjects: mri_gtmpvc --i sz013_BPnd.nii --reg sz013_BPnd.reg.lta --seg ~/sz013/mri/gtmseg.mgz --default-seg-merge --no-tfe --no-rescale --o ~/sz013/gtmpvc.output Thanks, ZZ On Apr 24, 2022, 13:45 -0700

Re: [Freesurfer] Does PETSurfer calculate ROI-wise values by averaging?

:45 -0700, Zhener Zhang , wrote: Hi Douglas, Thank you for the reply! The mri_gtmpvc outputs were expected and there was no reason for us to suspect that something was wrong. I was just curious as to the general process behind PETSurfer’s ROI-wise value calculation. Was each ROI-wise output

Re: [Freesurfer] Does PETSurfer calculate ROI-wise values by averaging?

-wise output generated by averaging across all voxels of an ROI? Thanks! Zhener Zhang On Apr 20, 2022, 09:50 -0700, Zhener Zhang , wrote: Hello, I have a question regarding the way ROI-wise values are calculated using PETSurfer. We ran the PETSurfer pipeline with PVC=0 and noticed that a

[Freesurfer] Does PETSurfer calculate ROI-wise values by averaging?

External Email - Use Caution Hello, I have a question regarding the way ROI-wise values are calculated using PETSurfer. We ran the PETSurfer pipeline with PVC=0 and noticed that a relatively small ROI like Putamen has one of the highest values of regional distribution of a PET

[Freesurfer] The better way to turn off PVC?

External Email - Use Caution Hello, I have a question regarding the following PETSurfer command: 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 I have been trying to run the analysis

[Freesurfer] PETSurfer: Which is the right way to turn off PVC?

External Email - Use Caution Hello, I have a question regarding the following PETSurfer command: 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 I have been trying to run the analysi

[Freesurfer] PETSurfer: Which is the right way to turn off PVC?

External Email - Use Caution Hello, I have a question regarding the following PETSurfer command: 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 I have been trying to run the analysi

[Freesurfer] PETSurfer: Which is the right way to turn off PVC?

External Email - Use Caution Hello, I have a question regarding the following PETSurfer command: 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 I have been trying to run the analysi