Hi Alexopoulos, See wiki page below for definition of morphometry stats. https://surfer.nmr.mgh.harvard.edu/fswiki/MorphometryStats
-Louis On Thu, 13 Dec 2012, Alexopoulos, Dimitrios wrote: > Doug, > > Thanks. When I add up all 49 fields in the aseg.stats I don't get the same > number (actually larger) > as the 'Brain Segmentation Volume'. > > v4.4/aseg.stas also includes a 'Brain Segmentation Volume Without Ventricles'. > I presume we can use this, and subtract out the CSF for total brain tissue? > > Jim > > ________________________________________ > From: freesurfer-boun...@nmr.mgh.harvard.edu > [freesurfer-boun...@nmr.mgh.harvard.edu] on behalf of Douglas N Greve > [gr...@nmr.mgh.harvard.edu] > Sent: Thursday, December 13, 2012 11:34 AM > To: freesurfer@nmr.mgh.harvard.edu > Subject: Re: [Freesurfer] Total brain tissue volume > > Hi Jim, in 4.4, the Brain Segmentation Volume is basically just an > adding up of the volumes in aseg.stats, but it includes ventricles, so > you would need to subtract those out. Newer versions of FS have a > BrainSegVolNotVent which is the volume of tissue. > doug > > On 12/13/2012 12:32 PM, Alexopoulos, Dimitrios wrote: >> >> Hi FS users, >> >> We've generated surfaces using FS v4.4 and would like to determine >> total brain tissue volume for each of our cases. Would this >> correspond to the 'Brain Segmentation Volume' which is standard in >> the output aseg.stats file. >> >> How is the 'Brain Segmentation Volume' determined, and is it different >> than adding up the 49 fields in the aseg.stas (subtracting out csf, >> ventricles, etc). >> >> What value best represents the total brain tissue volume? >> >> Jim >> >> >> >> The materials in this email are private and may contain Protected >> Health Information. If you are not the intended recipient, be advised >> that any unauthorized use, disclosure, copying, distribution or the >> taking of any action in reliance on the contents of this information >> is strictly prohibited. If you have received this email in error, >> please immediately notify the sender via telephone or return email. >> >> >> >> _______________________________________________ >> Freesurfer mailing list >> 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 > 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 > Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/ > > _______________________________________________ > Freesurfer mailing list > 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. > > > The materials in this email are private and may contain Protected Health > Information. If you are not the intended recipient, be advised that any > unauthorized use, disclosure, copying, distribution or the taking of any > action in reliance on the contents of this information is strictly > prohibited. If you have received this email in error, please immediately > notify the sender via telephone or return email. > > _______________________________________________ > 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
