Hello List, Just to clarify: I thought that the "total white matter volume" statistic that is output as part of 'mris_anatomical_stats' is incorrect and not to be used. Rather, I thought 'mris_wm_volume' was to be used instead...
Also, while I'm posting on this issue, could someone please comment on how 'mris_wm_volume' computes its value? I thought that perhaps the output of 'mris_wm_volume' would be the same as that obtained by running 'mris_volume' on the ?h.white surface and then subtracting the volume of (lateral ventricle + caudate + putamen + pallidum + thalamus-proper) (obtained from the aseg), but the numbers don't match, and the relatively long processing time of 'mris_wm_volume' relative to 'mris_volume' suggests to me that something more complex is going on. thanks, Mike Harms On Tue, 2007-05-01 at 10:04 -0400, Bruce Fischl wrote: > On Tue, 1 May 2007, deepa preeti wrote: > > > Hi all, > > > > I am a Freesurfer beginner and trying to do cortical surface analysis. > > I wanted to have whitematter, gray volume and avg.thickness for each > > hemisphere. So when I run > > mris_anatomical_stats -t thickness <subject> lh > > > > I get the following data: > > > > total white matter volume = 729800 mm^3 > > total surface area = 90850 mm^2 > > total gray matter volume = 181205 mm^3 > > average cortical thickness = 1.971 mm +- 0.739 mm > > average integrated rectified mean curvature = 0.129 > > average integrated rectified Gaussian curvature = 0.039 > > folding index = 1574.464 > > intrinsic curvature index = 204.376 > > > > Please correct me if I have this wrong. > > > >> total whitematter volume ---> is of the total brain > > this is the volume of the cerebral white matter > > > >> total surface area ---------> what does it represent ? > > the surface area of whatever surface you specified (default is lh.white) > > cheers, > Bruce > > > I am bit confused here. > > > > Thanks, > > Deepa Ramasamy. > > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
