This is computed by computing the volume inside the pial surface and subtracting the volume inside the white surface (and accounting for small amounts in the "unknown" region). doug
On 07/17/2012 04:47 AM, Emelie Andersson wrote: > Thank You Douglas, > > May I ask if You know how the numbers were calculated? > > best regards > Emelie > > On Mon, Jul 16, 2012 at 6:11 PM, Douglas N Greve > <gr...@nmr.mgh.harvard.edu <mailto:gr...@nmr.mgh.harvard.edu>> wrote: > > In the aseg.stats file, there will be these values > > # Measure lhCortex, lhCortexVol, Left hemisphere cortical gray matter > volume, 218425.204942, mm^3 > # Measure rhCortex, rhCortexVol, Right hemisphere cortical gray matter > volume, 212261.052152, mm^3 > # Measure Cortex, CortexVol, Total cortical gray matter volume, > 430686.257094, mm^3 > > does this work for you? > doug > > > On 07/16/2012 03:17 AM, Emelie Andersson wrote: > > Hello, > > > > We have a some doubts about how to measure the total cortical > volume. > > Is it recommendable to use GM = pial surface - white matter? > > > > Hope to hear from You, > > > > Best regards > > Emelie > > > > > > _______________________________________________ > > Freesurfer mailing list > > Freesurfer@nmr.mgh.harvard.edu > <mailto:Freesurfer@nmr.mgh.harvard.edu> > > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > -- > Douglas N. Greve, Ph.D. > MGH-NMR Center > gr...@nmr.mgh.harvard.edu <mailto:gr...@nmr.mgh.harvard.edu> > Phone Number: 617-724-2358 <tel:617-724-2358> > Fax: 617-726-7422 <tel:617-726-7422> > > Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting > <http://surfer.nmr.mgh.harvard.edu/fswiki/BugReporting> > FileDrop: www.nmr.mgh.harvard.edu/facility/filedrop/index.html > <http://www.nmr.mgh.harvard.edu/facility/filedrop/index.html> > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu <mailto:Freesurfer@nmr.mgh.harvard.edu> > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > > The information in this e-mail is intended only for the person to > whom it is > addressed. If you believe this e-mail was sent to you in error and > the e-mail > contains patient information, please contact the Partners > Compliance HelpLine at > http://www.partners.org/complianceline . If the e-mail was sent to > you in error > but does not contain patient information, please contact the > sender and properly > dispose of the e-mail. > > -- Douglas N. Greve, Ph.D. MGH-NMR Center gr...@nmr.mgh.harvard.edu Phone Number: 617-724-2358 Fax: 617-726-7422 Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting FileDrop: www.nmr.mgh.harvard.edu/facility/filedrop/index.html _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
