wow, that is noisy. Looks like the bright ring is dura. This isn't gado enhanced, is it? You could try using the gcut stuff
On Tue, 12 Apr 2011, Sarah Whittle wrote: > Hi, > > > > I'm working with some poor quality images and having a lot of trouble > with FreeSurfer segmentation. The main issue is that for a lot of > images, there is a bright "strip" of hyperintense signal forming a ring > around the cortex. I'm not sure what this is or where it comes from. > I've attached an example image that shows where FreeSurfer has > misinterpreted the GM/WM border due to this artefact. It will be quite > labour intensive to manually remove the artefact, as it appears across > most of the cortex. > > > > Has anyone seen this before and/or could offer advice as to the best way > to proceed? Using the 3T flag in version 5 helps a little but far from > perfect. > > > > Thanks, > > > > Sarah > > _______________________________________________ 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.
