Hi Zheng, there is something wrong with your math. When I sum up all the columns in your table from Left-Lateral-Ventricle to CC_Anterior, I get 215952 for the first row (you get only 67548). Can you double check your calculations? doug
On 10/28/2012 11:53 PM, Zheng Hui wrote: > Forgot to attach the excel file. Sorry for that. > > From: zhenghui <zheng....@duke-nus.edu.sg > <mailto:zheng....@duke-nus.edu.sg>> > Date: Monday, October 29, 2012 11:52 AM > To: Douglas N Greve <gr...@nmr.mgh.harvard.edu > <mailto:gr...@nmr.mgh.harvard.edu>> > Subject: [Freesurfer] Total cerebral volume. > > Hi Doug, > > Thanks for replying. But our datasets do showed that > Sum(all structures (after ICV in the list) except ventricle, CSF, > cerebellum and brainstem) is much smaller SubCortGrayVol. The former > is only about 30-40% of the later. We are using FS 5.1.0 without the > SupraTentorialVol fix.I attached the aseg file for your reference (the > last three columns in the sheet). > > Thanks, > Zheng Hui > > On 10/24/2012 09:01 AM, Zheng Hui wrote: > > > > Hi freesurfer, > > > > We are trying to calculate the total cerebral volume which excludes > cerebellum, brainstem, ventricle and CSF from the aseg.txt. Do we use > > > > CortexVol + CorticalWhiteMatterVol + SubCortGrayVol > > Or > > CortexVol + CorticalWhiteMatterVol + Sum(all structures (after ICV in > the list) except ventricle, CSF, cerebellum and brainstem) > This should give very close to the same value. I don't think it makes a > difference. > > > > > > Also, I saw Doug's post about the bug fixing for SupraTentorialVol. > To re-run the segstats for longitudinal subjects, any extra step other > than "recon-all –long tpN baseID –segstats" and does it affect any > other structure or just SupraTentorialVol? > It should not affect other structures. > doug -- 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 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.
