if you put them in the body of the wm (where the intensity in the T1.mgz vol is < 110), it shouldn't effect the placement of the boundary substantially On Fri, 23 Jun 2006, Graham Wideman wrote:

At 6/23/2006 06:57 PM, you wrote:

...

probably not. Check the intensity of the white matter underlying the gray and see if it's significantly less than 110. If so, try putting a few control points there (make sure they aren't in partial-volumed wm)

Bruce:

You would recommend this, even though the white boundary looks more or less in the right place?

One incongruity is that the aseg segmentation gets the grey pretty much right, but the pial surface is way inboard. (I do understand that the aseg grey is not used to find the surface, it just *looks* like it should be smarter!).

And probably we shouldn't strain this discussion too far at this point... we need to take a closer look given that the "5 mm" hypothesis is thrown out...

Graham