Hi Sourena
what we usually do is it map it into fsaverage space, then downsample the icosahedron to ico5 (10K vertices) or so. Then it's manageable.
cheers Bruce On Fri, 3 Feb 2012, Sourena Soheilinezhad wrote:
Hi Dr. Fischl Actually it's about generating the cortico-cortical connectivity matrix, and working with the original surface and upsampling the DW image results in creation of an enormous connectivity matrix. I have the impression that reducing T1 resolution down to DW and then running surface reconstruction is not a good option because of the partial volume effect. What can be the best solution here?
Cheers, Sourena
On Friday, February 3, 2012, Bruce Fischl fischl@nmr.mgh.harvard.edu wrote:
Hi Sourena
what are you trying to do? You can sample the diffusion onto the surface
easily enough, or map the surface into the diffusion coordinates with mri_surf2surf and bbregister, but why do you want to downsample it?
Bruce
On Fri, 3 Feb 2012, Sourena Soheilinezhad wrote:
Dear Experts, What is the best strategy to downsample a surface into diffusion (e.g.
FA)
resolution of the same subject? Thanks,
Sourena Soheili
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