sure, you should be able to make vertex-wise maps. I think Doug wrote
something to do this, but if not I can modify mri_cnr to output mean and
variance maps for gray and white easily enough.
cheers
Bruce
On Fri, 20 Dec 2019, Liu Y wrote:
External Email - Use Caution
Hi Bruce,
Thanks for the info. Can the tool display the vertexes with low G/W
contrast? I would like to use those vertexes as a guide for visual
evaluation.
Cheers,
Yawu
Bruce Fischl <fis...@nmr.mgh.harvard.edu> 于 2019年12月19日周四 16:52写道：
Hi Yawu
we have tools for mapping G/W contrast and CNR, but of course
that
presupposes that our surfaces are in the correct location (more
or less).
You can for example use vol2surf to sample at negative and
positive
proj_dist and compute this kind of thing, or I believe Doug has
some
binaries that do it for you
cheers
Bruce
On
Thu, 19 Dec 2019, Liu Y wrote:
>
> External Email - Use Caution
>
> Hi Freesurfers,
> The contrast between GM/WM may vary regions by regions. Some
regions have
> high contrast, some regions have low contrast, is there a
method can map the
> reliability of separating gray and subcortical white matter?
>
> Thanks in advance,
> Yawu
>
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