Hi Randy

we need significantly more information from you if you want our help. What kind of scan are you talking about? Have you tried any intervention such as control points? Can you post an image or email us an example of one that fails?

cheers Bruce

On Fri, 25 Mar 2016, Dr. Benson wrote:

I'm new to FreeSurfer.  Trying to do volumetric analysis on MPRAGE data but on half of the studies the results are poor.  Specifically, the gray matter volume is very small due to a poor segmentation of the white matter which includes much of the cortical gray matter.  The contrast to noise is good and not sure why I got a good result on some and not others.  Could use some help on this, please. Randy Benson, M.D.

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