I'm using 1.5T MPRAGEs. and the skull stripped T1 overall looks very bright. However the intensity for WM is between 90 and 120.

Tracy

On Sep 14, 2005, at 12:40 PM, Bagnato, Francesca (NIH/NINDS) wrote:

Just a cuoriosity: which kind of volumes are you using? I had lots of troubles with 3T SPGRs and saw the center of the images just brighter. francesca

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From: Tracy Wang [mailto:twang@artsci.wustl.edu] Sent: Wed 9/14/2005 1:23 PM To: freesurfer@nmr.mgh.harvard.edu Subject: [Freesurfer] intensity normalization failure

Hi

What is a typical example of when the intensity normalization process fails? Does the over-all image seem brighter? What is a good indicator of success or failure?

Thanks,

Tracy

Tracy Wang

Research Assistant

Cognitive Neuroscience Laboratory

Washington University

Department of Psychology, Campus Box 1125

One Brookings Drive

St. Louis MO 63130-4899

314-935-5019

twang@artsci.wustl.edu

Tracy Wang Research Assistant Cognitive Neuroscience Laboratory

Washington University Department of Psychology, Campus Box 1125 One Brookings Drive St. Louis MO 63130-4899 314-935-5019 twang@artsci.wustl.edu