Hi Roser, it's hard to judge accuracy from a single slice. The cc segmentation adjusts for the angle of the head, which can make any single sagittal slice look wrong as the cc is cutting through it at an angle. Try looking at the segmentation in other views. Horizontal can be particularly helfpul. If you are still convinced it is wrong you can either edit it manually in tkmedit, or send the subject to us and we'll take a look.
cheers, Bruce On Mon, 22 Mar 2010, Roser Sala wrote: > Hello, > > We are running FreeSurfer in order to obtain Callosal volumes from > pathologic brain. > > Segmentation volumes (aseg.mgz) seem 'not bad', but specially in the > Callossum there are some misclassifications (attached image with an > example). > > Which would be the best way to correct this? Do you recommend us to add some > control points? we are not sure if adding control points will affect only > the surface reconstruction, or will help aslo to correct segmentation, which > is our purpose. > > Many thanks in advance > > - Roser - > _______________________________________________ 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.
