Haobo,

Adding a control point might help. See this tutorial:

http://surfer.nmr.mgh.harvard.edu/fswiki/FsTutorial/ControlPoints

which describes the problem you are seeing and how to fix it.

Don't put the control point at the very end of the gyrus, as this voxel might be partial-volumed and marking it as white matter with a control point will mess-up the segmentation. It should be placed at the base (just inside your circle in your drawing).

Nick

On Sat, 2009-02-14 at 17:39 +1100, Haobo Zhang wrote:

Hi all,

After running with Freesurfer, I found the red line cutting through the superior temporal gyrus in the coronal view slice. And the yellow line excluded part of the white matter in this area. Please check the attachment. Does anyone have experience in fixing this type of problems? Thank you for your help!

Cheers, Haobo Zhang

School of Psychiatry, University of New South Wales

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