External Email - Use Caution Hi Douglas,
Could you help me concerning my previous questions ? Thanks, Matthieu > Le 11 févr. 2019 à 17:37, Matthieu VANHOUTTE <matthieuvanhou...@gmail.com> a > écrit : > > Hi Douglas, > > Thanks for clarification. Why use "nearest neighbor" instead of classical > "trilinear" interpolation ? > > Should it be done as well when projecting from volume to surface with > mri_vol2surf ? > > Best, > > Matthieu > > On 11/02/2019 17:32, Greve, Douglas N.,Ph.D. wrote: >> It will not used trilinear interp. Try it with nearest neighbor >> >> On 2/10/19 11:55 AM, Matthieu Vanhoutte wrote: >>> External Email - Use Caution >>> >>> Dear Douglas, >>> >>> Before using "mri_gtmpvc --psf 0 --no-tfe -- rbv" according your advice to >>> obtain voxel-wise output rescaled without PVC correction, I have done >>> sequentially the different steps to obtain this output. However, when >>> comparing voxel-wise rescaled output (rbv.nii.gz) between the two methods, >>> final values at each voxel are not the same… >>> >>> To obtain first rescaled voxel-wise output I have used sequentially these >>> steps: >>> 1. Concatenate transforms from PET space to gtmseg.mgz >>> 2. Register native PET into gtmseg space (trilin. interpolation) >>> 3. Compute mean PET inside reference regions (with regions masks from >>> gtmseg.mgz) >>> 4. Compute intensity normalized PET images in gtmseg space >>> >>> Doesn’t the "mri_gtmpvc --psf 0 --no-tfe -- rdv" command use these same >>> steps ? >>> >>> 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
