mris_volume returns the volume interior to the entire surface (whichever surface is provided as input), which in the case of Xh.white as input will include subcortical gray matter, ventricles, etc.
mris_wm_volume subtracts out the volume of non-wm voxels based on the aseg.
Here is the usage statement for both:
usage: mris_volume surface_file_name This program computes the volume of the given closed surface using a divergence formula use -v option to output more messages
--------- mris_wm_volume usage: mris_wm_volume <subject> <hemi> This program computes the volume of the enclosed ?h.white surface, ignoring non-wm voxels in the aseg. use -v option to output more messages -SDIR SUBJECTS_DIR -white whitesurfname -aseg asegname
cheers, -MH
On Fri, 2011-09-23 at 16:39 +0000, Zhang, Yuning wrote:
Dear FreeSurfer Expert,
i am trying to generate the total wm volume using mris_wm_volume <subjid> <hemi> ,but this value is different from what i get using mirs_volume ?h.white, could you explain the differences between these two commands. and which is the best representation of the surface based total wm volume ?
thanks yuning
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