Hi Jeff, it's going to be tricker than that to get the exact value. For
the WM volume computation, there's yet another routine that is used.
This one creates a high-resolution volume to determine which voxels are
withing the WM surface. It then loops through the voxels within the WM
surface
Thanks Doug. And good question that I've wondered about myself Jeff.
The part about the high-resolution volume that is created under the
hood explains why mris_wm_volume takes substantially longer to complete
than would be expected relative to just running `mris_volume Xh.white`
and then
Thank you Doug for your answer. After reading the wiki more, it has led me
to another question.
I am trying to duplicate the White Matter value from aseg.stats using
FreeSurfer 5.0.0. The value from aseg.stats is 220804 (as it is also when
running mris_wm_volume). By hand, when I run
Hi Jeff, the total cortical gray matter is based on the volume between
the white and pial surfaces. The other structures you mention below are
based on the automatic volume segmentation.
doug
Jeff Sadino wrote:
Hello,
Thank you Bruce and Doug for your answers to my previous question
about
: Re: [Freesurfer] Brain Volume measures
Hi Jeff, the total cortical gray matter is based on the volume between
the white and pial surfaces. The other structures you mention below are
based on the automatic volume segmentation.
doug
Jeff Sadino wrote:
Hello,
Thank you Bruce and Doug
Hello,
Thank you Bruce and Doug for your answers to my previous question about a
bad talairach.lta file. I am now grabbing volumes using fs5.0.0 and would
like to ask for clarification. On the Morphometry Stats page at
http://surfer.nmr.mgh.harvard.edu/fswiki/MorphometryStats, it says that the
