In the website below, lhCorticalWhiteMatter,rhCorticalWhiteMatter,CorticalWhiteMatter - volume inside the white surface minus anything that is not WM. CorticalWhiteMatter includes hypointensities. This uses the surface-based volume computation for part of the calculation and counts voxels to subtract "anything not in WM". It is approximately equal to the count of WM voxels in aparc+aseg.mgz.
Since, cerebellar wm is in the aparc+aseg.mgz so that means its included in the CorticalWhiteMatter, correct ? ----- Original Message ----- From: Douglas N Greve <gr...@nmr.mgh.harvard.edu> To: Ritobrato Datta <rida...@mail.med.upenn.edu> Cc: Freesurfer@nmr.mgh.harvard.edu Sent: Mon, 03 Jun 2013 13:19:54 -0400 (EDT) Subject: Re: [Freesurfer] Repost: question abt supratentorial vol and total brain vol. See if this answers your question http://surfer.nmr.mgh.harvard.edu/fswiki/MorphometryStats this is for v5.2 and beyond On 06/03/2013 01:07 PM, Ritobrato Datta wrote: > ic thats right....I was getting confused. So the total gm vol includes > cerebellar gm vol but the cortical wm vol only includes the wm vol under the > cortical ribbon and around the subcortical gm structures....? Or does that > include wm under the cerebellar cortex as well ? > > Is there a table somewhere which specifies which of these freesurfer > parcellated structures contribute to these combined measures such has > supratentorial vol / whole gm vol etc etc.... > > That will be very helpful. > > > > ----- Original Message ----- > From: Douglas N Greve <gr...@nmr.mgh.harvard.edu> > To: Ritobrato Datta <rida...@mail.med.upenn.edu>, > Freesurfer@nmr.mgh.harvard.edu > Sent: Mon, 03 Jun 2013 12:59:30 -0400 (EDT) > Subject: Re: [Freesurfer] Repost: question abt supratentorial vol and total > brain vol. > > > Hi Rito, I don't think we report a total wm volume, do we? > doug > > > > > On 06/03/2013 12:56 PM, Ritobrato Datta wrote: >> Hi Doug, >> >> Just following up on your reply sometime back - >> Does total white volume include cerebellar wm vol also ? >> >> Please let me know. >> >> Thanks >> >> Rito >> >> ----- Original Message ----- >> From: Douglas N Greve <gr...@nmr.mgh.harvard.edu> >> To: freesurfer@nmr.mgh.harvard.edu >> Sent: Fri, 24 May 2013 17:36:18 -0400 (EDT) >> Subject: Re: [Freesurfer] Repost: question abt supratentorial vol and total >> brain vol. >> >> Total Gray includes the cerebellar gray >> doug >> On 05/24/2013 03:51 PM, Ritobrato Datta wrote: >>> Hello All, >>> >>> Can someone address the following ? I sent this query yesterday but it fell >>> through the cracks. >>> >>> I am using freesurfer 5.1 for my analysis. >>> >>> I am interested in calculating the whole brain vol (total Gray vol + total >>> WM vol) excluding the CSF volume and cerebellum. >>> >>> Total Brain Vol = TotalGrayVol + CorticalWhiteMatterVol >>> >>> In all of the 79 subjects, when I compare the Total Brain Vol to >>> SupraTentorialVol, I find SupraTentorialVol is smaller than the Total Brain >>> Vol I have calculated. >>> >>> Here are some measures - >>> >>> For 79 subjects - >>> >>> Average Total Brain Vol = 1038395.291 >>> >>> Average SupraTentorialVol = 979996.4684 >>> >>> Is that expected ? >>> >>> Is it possible that CSF vol is part of Total Brain Vol ? >>> >>> Any insight will be helpful. >>> >>> Thanks >>> >>> Rito >>> >>> _______________________________________________ >>> 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. >>> >>> >>> _______________________________________________ >>> 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: https://gate.nmr.mgh.harvard.edu/filedrop2 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
