Hi, Thanks a lot, Bruce. These are from a 1.5T GE Signa scanner, with a T1-SPGR sequence with 0.86x0.86x1.5mm voxel size, echo time 5.2ms, resolution time 21.7ms, flip angle 20. This is an older sample we have, and I intent to replicate earlier SPM analyses but now using FreeSurfer. I acknowledge the low contrast problem, but I am having success in correcting topological errors in the temporal lobe, and only these insula problems show to be harder to deal with. Your help will be very appreciated! I am now putting the file (PedroRosa.zip) Best,, Pedro Rosa
On Tuesday, April 7, 2015 at 9:29 AM, Bruce Fischl wrote: > sure, upload it and we will take a look. Can you tell us a bit about the > acquisition? It's hard to tell for sure with the parcellation overlaid, > but it looks *very* low contrast, which I'm sure is making things harder > > cheers > Bruce > On Mon, 6 Apr 2015, Pedro Rosa - Gmail > wrote: > > > Dear FreeSurfers, > > I was correcting the topology of some subjects, and could not fix some > > subjects whose insula is misplaced into the temporal lobe / subcortical > > regions. Inspecting wm.mgz in tkmedit, it seems that there are wm voxels > > into the hippocampus, perhaps leading surfaces to be built there. Removing > > them, however, did not help (actually, it seems that it made things worse). > > Can you help me? I can upload the subject if it you think it is suitable. > > Many thanks in advance, > > Pedro Rosa. > > > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu (mailto: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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