Re: segmentation

[L . Scheef]

Hi Kevin,

I agree with Bruce. It sounds like a BIAS field problem. You might want to use FAST from the FSL-package to solve the problem (http://www.fmrib.ox.ac.uk/fsl/fast/) or the matlab script from http://www.psych.stanford.edu/~kalina/SPM99/Tools/vol_homocor.html

Good luck!

Lukas


Date sent: Tue, 3 Jun 2003 14:59:11 -0600
Subject:
From: "Kevin H." <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Send reply to: [EMAIL PROTECTED]

ok thanks doug

also, i'm having trouble segmenting the white matter in the visual
cortex. (its too dark, almost as bright as the grey matter in the mid
brain)
we've averaged multiple scans but that doesn't seem to help. would
changing the normalization parameters in the Expert preferences help?

thanks!!!

Lukas Scheef, MD, MSc MR-Tomography Department of Radiology University of Bonn Sigmund-Freud-Straße 25 D-53105 Bonn Fax: +49-228-287-5598 Phone:+49-228-287-4496 E-mail: [EMAIL PROTECTED]