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:


<excerpt>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


  _____  


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 



</excerpt><fontfamily><param>Courier</param><x-tad-bigger>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

</x-tad-bigger><color><param>9999,0000,0000</param><x-tad-bigger>twang@artsci.wustl.edu</x-tad-bigger></color><x-tad-bigger>

</x-tad-bigger></fontfamily>