Yes, we prefer keeping the sampling as uniform as possible in subject coordinates
On Jul 24, 2011, at 12:10 PM, "Matt Glasser" matt@ma-tea.com wrote:
There are different numbers of vertices in subjects surfaces. It is possible to resample subjects' surfaces to a common mesh after registration, but the FreeSurfer folks don't prefer this approach. They prefer to simply resample the quantitative data.
Peace,
Matt.
-----Original Message----- From: freesurfer-bounces@nmr.mgh.harvard.edu [mailto:freesurfer-bounces@nmr.mgh.harvard.edu] On Behalf Of Knut J Bjuland Sent: Sunday, July 24, 2011 11:08 AM To: Freesurfer Mailing List Subject: [Freesurfer] Question about if there is constant number of vertexes across different brains
Hi I have read (Dale, Fischl et al. 1999) and (Fischl, Sereno et al. 1999) . I have a question about if I understood the tessellation procedure right. There are two vertexes in each voxel, but is the total number of vertex constant across brains. I believe that number of total vertex does not change over brain since it will be difficult to do statically measure if the total numbers of vertex change. Nevertheless, the shape and size of the vertex do change. Is this a correct assumption?
Knut J
Referanse liste
Dale, A. M., B. Fischl, et al. (1999). "Cortical surface-based analysis. I. Segmentation and surface reconstruction." Neuroimage 9(2): 179-194. Fischl, B., M. I. Sereno, et al. (1999). "Cortical surface-based analysis. II: Inflation, flattening, and a surface-based coordinate system." Neuroimage 9(2): 195-207.
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