Re: [Freesurfer] Intensity Re-scaling Relative to Full Brain Atlas

2017-02-16 Thread Douglas N Greve
That file would be anything you want to rescale. So gtm.nii.gz would be a candidate (as would an Muller-gartner PVCed volumes). On 02/16/2017 03:32 PM, Anderson Napolitano wrote: > I am so sorry about that Dr. Greve. > The post I made earlier is reference from the following thread: > On 02/16/20

Re: [Freesurfer] Intensity Re-scaling Relative to Full Brain Atlas

2017-02-16 Thread Anderson Napolitano
I am so sorry about that Dr. Greve. The post I made earlier is reference from the following thread: On 02/16/2017 12:28 PM, Anderson Napolitano wrote: > > Thank you Dr. Greve. Just to clarify, the 'inputfile.nii.gz' file in > the command: > > fscalc inputfile.nii.gz div value -o outputfile.nii

Re: [Freesurfer] Intensity Re-scaling Relative to Full Brain Atlas

2017-02-16 Thread Douglas N Greve
Hi Anderson, please include previous correspondence so that we know what this refers to. thanks On 02/16/2017 12:28 PM, Anderson Napolitano wrote: > > Thank you Dr. Greve. Just to clarify, the 'inputfile.nii.gz' file in > the command: > > fscalc inputfile.nii.gz div value -o outputfile.nii.gz >

[Freesurfer] Intensity Re-scaling Relative to Full Brain Atlas

2017-02-16 Thread Anderson Napolitano
Thank you Dr. Greve. Just to clarify, the 'inputfile.nii.gz' file in the command: fscalc inputfile.nii.gz div value -o outputfile.nii.gz ,is the gtm.nii.gz file generated after the command: mri_gtmpvc --i pet.nii.gz --reg template.reg.lta --psf FWHM --seg gtmseg.mgz --default-seg-merge --au

Re: [Freesurfer] Intensity Re-scaling Relative to Full Brain Atlas

2017-02-15 Thread Douglas N Greve
There is not a flag to do this, but it should be fairly easy. There will be a file called aux/global.gmwmcsf.dat. This has the mean value average over all GM, WM, and CSF voxels (after PVC). You can use this to scale your data like fscalc inputfile.nii.gz div value -o outputfile.nii.gz You can

[Freesurfer] Intensity Re-scaling Relative to Full Brain Atlas

2017-02-14 Thread Anderson Napolitano
Hi Experts! Quick question: is it possible to re-scale intensities relative to the full brain atlas? Details: Per step 3 of the following tutorial: https://surfer.nmr.mgh.harvard.edu/fswiki/PetSurfer I wanted to re-scale the the intensities relative to the full brain atlas. The command:

[Freesurfer] Intensity Re-scaling Relative to Full Brain Atlas

2017-02-10 Thread Anderson Napolitano
Hi Experts! Per step 3 of the following tutorial: https://surfer.nmr.mgh.harvard.edu/fswiki/PetSurfer I wanted to re-scale the the intensities relative to the full brain atlas. The command: --no-rescale removes scaling relative to the Pons and the command: --rescale rescales the intensit