Dear Freesurfer expert,
I am writing regarding the local gyrification index (lGI), pipeline now available with Freesurfer. In order to better understand the results obtained it would be important to better understand the relationship between lGI to other metrics provided by the freesurfer analysis. I understand lGI is the ratio between the sulcal surface / outer surface. Which is the relationship between lGI and area, area_pial, sulcation and curvature and even thickness (available for the qdec analysis)? Has it been evaluated yet? Edu ________________________________ 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, September 7, 2017 3:17 PM To: freesurfer@nmr.mgh.harvard.edu Subject: Re: [Freesurfer] Unknown regions in cortical parcellation what version of FS are you using? On 09/07/2017 03:19 PM, Aidan Murphy wrote: > > We're running QA on Freesurfer's aseg and aparc+aseg volumes. On the > aparc volume we're noticing fairly large unknown regions in what > should be entorhinal cortex, specifically where it comes up against > the hippocampus and amygdala. The aseg volumes label these unknown > regions as cortex. I've searched the archives and haven't been able to > find anything similar from recent years. > > I've attached some axial screenshots of the raw T1, the aseg and the > aparc+aseg. > > > _______________________________________________ > 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<http://www.nmr.mgh.harvard.edu/facility/filedrop/index.html> Martinos Center File Drop<http://www.nmr.mgh.harvard.edu/facility/filedrop/index.html> www.nmr.mgh.harvard.edu 11/15/2012 -- There is a new version of Filedrop. Please help us test it https://gate.nmr.mgh.harvard.edu/filedrop2/ Welcome to the Martinos Center file drop area ... 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.
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