Amanda, Some of those control points are in gray matter which might be why the surfaces are including gray matter in nearby areas. If the control points changes the intensity value of gray matter to be closer to white matter, this could be the problem. Allison

On Mon, 27 Feb 2012, Amanda Rodrigue wrote:

HI, I am doing cortical thickness analysis and I am on my 18th round of edits for this particular subject. In 2 places It seems to be including a large chunk of gray matter as white and when viewing the auxiliary volume, there is no white matter there (please see attached images). This continues for several slices.  Is there any way to fix this? Thanks. Amanda Rodrigue -- Amanda RodrigueDoctoral Student Psychology: Brain and Behavior Sciences University of Georgia

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