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Dear Rahyeong,


I am not sure I understand the problem. There seems to be inhomogeneity in your images, but I am not clear whether this is before or after correction.

Inhomogeneity correction is part of Unified Segmentation (Ashburner and Friston 2005), which you can access through the SEGMENT button in SPM5 and 8.

While setting this up, you can specify that you want the bias-corrected image written out.

Once you've run SEGMENT on your images, you can then check the bias-corrected image - with a bit of luck this should reduce the inhomogeneities you see.

Hope this helps,

Best wishes,

Alexander



---------------------------------
Alexander Hammers, MD PhD



NEW Affiliation:
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Fondation Neurodis
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On 7 May 2010, at 09:08, Rahyeong Juh wrote:

 
----- Original Message -----
From: [log in to unmask]" href="mailto:[log in to unmask]">Rahyeong Juh
To: [log in to unmask]" href="mailto:[log in to unmask]">[log in to unmask]
Sent: Friday, May 07, 2010 4:02 PM
Subject: inhomogeneity correction

Dear SPM experts
 
Is there any fix the this inhomogeneity correction? How can I fix the problem?
Who knows? Thanks
 
Best Regards
 
Rahyeong
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