[Freesurfer] surface-based morphometry registration

2014-05-21 Thread Tudor Popescu
Hi all, If I understand correctly, the surface-based morphometry (SBM) done by Freesurfer offers superior registration as compared to voxel-based methods such as VBM, in that: 1. "SBM smoothing respects anatomical boundaries better than the 3D VBM smoothing". 2. "SBM group analysis employs inter-

Re: [Freesurfer] surface-based morphometry registration

2014-05-21 Thread Bruce Fischl
Hi Tudor 1. The smoothing we do is along the surface, so no matter how huge the kernel gets it only ever includes cortical gray matter. In contrast, volume smoothing kernels will happily smooth in white matter, skull, csf, the bore of the scanner, etc as the kernels get big. 2. Yes, we h

Re: [Freesurfer] surface-based morphometry registration

2014-05-21 Thread Tudor Popescu
Thanks very much for explaining this Bruce. Tudor On 21 May 2014 22:01, Bruce Fischl wrote: > Hi Tudor > > 1. The smoothing we do is along the surface, so no matter how huge the > kernel gets it only ever includes cortical gray matter. In contrast, volume > smoothing kernels will happily smooth