On Wed, 16 Oct 2002, Bob Thoma wrote: > All, > > I've been having some difficulty with skull stripping, it doesn't appear to > be removing enough.
Hello again, Just a quick correction -- you'd want to increase the preflooding height from its default of 25 if the skull strip isn't removing enough (sorry, I'd misread that). I would suggest starting with a -h 27, the higher the number, the more non-brain tissue gets stripped. Good luck! I have tried changing the remove skull settings under > expert preferences, but have had no luck. I found a previous email with a > similar problem. Bruce, I believe you replied as such: > > are you using a talairaching procedure? If so, please check that it worked > properly. If it fails, everything after it fails as well. Please also check > your T1 volume by bringing it up in tkmedit. The vast majority of the white > matter should have an intensity of exactly 110. If this is not the case,then > the intensity normalization didn't work properly, possibly because of a > talairach failure, or for some other reason. The segmentation itself usually > works pretty well, so I suspect that it is one of the previous steps that is > causing you problems. > > cheers, > Bruce > > I have two questions, one, how can i check to see if the talairaching > procedure worked properly or how to not run the talairaching procedure. > Second, where do I locate the white matter intensity that you stated to be > 110. > > Or if anyone has any other suggestions, I would be grateful. > > Thanks > Natalie > > > > > > > > _________________________________________________________________ > Protect your PC - get McAfee.com VirusScan Online > http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963 > -- Evelina
