Hi Fidel the surfaces of the same hemi for a given subject area all topologically equivalent and share an index structure. what that means is that the vertex label/annotation can be shown/used on any surface, including the ?h.white and ?h.pial surfaces (which is probably what you want). Or you can look at the aparc+aseg.mgz, which combines the subcortical and cortical labelings into a single volume.
cheers Bruce On Mon, 20 Dec 2010, FIDEL ALFARO ALMAGRO wrote: > Thanks mr Fischl, but these surfaces are a deformation of the original > brain (According to what I have read in the wiki). My intention is to > write an algorithm to do some operations on the original images, using the > sulci information from freesurfer. In order to do that, I would need the > sulci information IN a segmentation of the brain with the same size as the > original. Is there any transformation I can apply to have this > information? > > Thanks again. > >> the gyral/sulcal segmentations are generated on the surfaces and viewable >> in tksurfer. For example: >> >> tksurfer <subject> lh inflated -aparc >> >> will bring up <subject> and show the lh.aparc.annot on top of the inflated >> surface. You can also load them from the tksurfer interface using >> file->label->import annotation >> >> cheers >> Bruce >> >> On Mon, 20 Dec 2010, FIDEL ALFARO ALMAGRO wrote: >> >>> >>> Hi, >>> >>> I am pretty new in freesurfer and I do not know if this question has >>> been >>> answered before (It is difficult to search for 1 basic question), so I >>> will post it anyways: >>> >>> - Is there any segmentation/labeling in freesurfer that allows the user >>> to >>> identify all the sulci of an MR image? I have done the recon-all, >>> correctly, but I am not able to see any sulcus using tkmedit with the >>> generated segmentations. >>> >>> Thanks in advance. >>> >>> >>> _______________________________________________ >>> 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
