Re: [Freesurfer] Voxel dimensions and final recon

2018-12-04 Thread Bruce Fischl
Hi Michael by default we resample everything to 1mm isotropic. Different parts of our analysis are susceptible to changes in voxel size in different ways. I expect the volume stream resulting in the aseg is ok with relatively coarse voxels, but the surface stream will start to fail catastrophi

[Freesurfer] Voxel dimensions and final recon

2018-12-04 Thread Michael ONeill
External Email - Use Caution Dear Freesurfer, I'm enquiring about the known effect that pixel spacing has on the reconstructions and final volume estimates produces by Freesurfer. Specifically, is there a range of pixel spacing values that are necessary for accuracy? Secondly,