11 May
2016
11 May
'16
1:27 p.m.
Hi Freesurfers,
I have seen at least three ways for identifying an intermediate surface between the white and pial surfaces:
- Multiply the surface normal vector for each white surface vertex by half of the cortical thickness and add it to each vertex coordinate - Average the white and pial coordinates for each vertex - Use mris_expand, e.g. `mris_expand -thickness lh.smoothwm 0.5 lh.graymid`
I have found that these approaches all give similar, but not identical results.
Is there a consensus that one approach is best relative to the others?
Thanks, Michael