Re: [Freesurfer] PETSurfer: Equivalence between surfaces un gtmseg space and native surface?
The surface resolution is set during the recon-all analysis and is uninfluenced by the PET data On 3/7/19 3:16 AM, Matthieu VANHOUTTE wrote: > External Email - Use Caution > > Ok so if I well understand surface in the gtmseg space would not have > finer resolution than surface in native space (big voxel)? > > On 06/03/2019 23:48, Greve, Douglas N.,Ph.D. wrote: >> I don't think so. The surfaces are at about 1mm resolution, which should >> be fine for this. The reason that RBV had to be upsampled is that there >> is no way to represent the different tissue types at a single (big) voxel >> >> On 3/6/19 4:46 PM, Matthieu Vanhoutte wrote: >>> External Email - Use Caution >>> >>> Dear Douglas, >>> >>> RBV PVC use the advantage of upsampled gtmseg space at 0.5 mm3 to >>> compute PVCorrected images. Would it be beneficial to project this >>> PVCorrected images onto gtmseg space surfaces to keep this upsampled >>> resolution ? >>> >>> Or would it be equivalent to project these PVCorrected images on >>> gtmseg space onto native surfaces using --reg rbv2anat.lta ? >>> >>> Best, >>> Matthieu >>> >>> ___ >>> Freesurfer mailing list >>> Freesurfer@nmr.mgh.harvard.edu >>> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer >> ___ >> Freesurfer mailing list >> Freesurfer@nmr.mgh.harvard.edu >> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > ___ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer ___ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
Re: [Freesurfer] PETSurfer: Equivalence between surfaces un gtmseg space and native surface?
External Email - Use Caution Ok so if I well understand surface in the gtmseg space would not have finer resolution than surface in native space (big voxel)? On 06/03/2019 23:48, Greve, Douglas N.,Ph.D. wrote: > I don't think so. The surfaces are at about 1mm resolution, which should > be fine for this. The reason that RBV had to be upsampled is that there > is no way to represent the different tissue types at a single (big) voxel > > On 3/6/19 4:46 PM, Matthieu Vanhoutte wrote: >> External Email - Use Caution >> >> Dear Douglas, >> >> RBV PVC use the advantage of upsampled gtmseg space at 0.5 mm3 to >> compute PVCorrected images. Would it be beneficial to project this >> PVCorrected images onto gtmseg space surfaces to keep this upsampled >> resolution ? >> >> Or would it be equivalent to project these PVCorrected images on >> gtmseg space onto native surfaces using --reg rbv2anat.lta ? >> >> Best, >> Matthieu >> >> ___ >> Freesurfer mailing list >> Freesurfer@nmr.mgh.harvard.edu >> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > ___ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer ___ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
Re: [Freesurfer] PETSurfer: Equivalence between surfaces un gtmseg space and native surface?
I don't think so. The surfaces are at about 1mm resolution, which should be fine for this. The reason that RBV had to be upsampled is that there is no way to represent the different tissue types at a single (big) voxel On 3/6/19 4:46 PM, Matthieu Vanhoutte wrote: > > External Email - Use Caution > > Dear Douglas, > > RBV PVC use the advantage of upsampled gtmseg space at 0.5 mm3 to > compute PVCorrected images. Would it be beneficial to project this > PVCorrected images onto gtmseg space surfaces to keep this upsampled > resolution ? > > Or would it be equivalent to project these PVCorrected images on > gtmseg space onto native surfaces using --reg rbv2anat.lta ? > > Best, > Matthieu > > ___ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer ___ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
[Freesurfer] PETSurfer: Equivalence between surfaces un gtmseg space and native surface?
External Email - Use Caution Dear Douglas, RBV PVC use the advantage of upsampled gtmseg space at 0.5 mm3 to compute PVCorrected images. Would it be beneficial to project this PVCorrected images onto gtmseg space surfaces to keep this upsampled resolution ? Or would it be equivalent to project these PVCorrected images on gtmseg space onto native surfaces using --reg rbv2anat.lta ? Best, Matthieu ___ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
