you can certainly get cortical gray by using the ?h.cortex.label that's generated automatically by the new mris_make_surfaces. The whole notion of a gray/white boundary is a myth. There's about 1/2mm of slack in which there are gradually more and more cell bodies (moving up from the wm) until it's only cell bodies and no wm.
On Mon, 26 Feb 2007, Sasha Wolosin wrote:
Well, since at the neuronal level there is some degree of white matter present in the cortex, in whole brain segmentation cortical gray matter is often reported (plus subcortical gray), which is different from the freesurfer output of cortical "gray matter volume" because it may exclude small amounts of white matter embedded within the cortex. We would like to know if there is any way to obtain a comparable measure in freesurfer.
Bruce Fischl fischl@nmr.mgh.harvard.edu 2/26/2007 3:49 PM >>>
what does that mean? On Mon, 26 Feb 2007, Sasha Wolosin wrote:
In freesurfer, is there any way to run a gray/white matter
segmentation
within the cortex? Thanks, Sasha
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