the final objective function value is not a great indicator of failure
of the talairaching procedure. it's a better indicator of success. if it
is low(<.1), you can be confident it is correct. if it is high, that does
not mean it is incorrect, but that you should check it. certain brains
(with large ventricles) will have higher final objective functions.
you will have to look at your talairach transforms to be sure they are
accurate. use tkregister2 as it shows in the documentation to check/fix
it.
thanks,
brian
On Tue, 2 Aug 2005, Tracy Wang wrote:
Hi All,
It seems that my talairach transforms are still suspect, FOF values
falling between the 13-.17 range. I've tried Xiao Han's suggestion to skull
strip first, but it the final objective function value is still high. Once
the transform is applied on the image in native space, it does look a little
blurry and jagged, like the resolution has changed. Any ideas or insight of
what the problem may be?
Thanks!
Tracy
Tracy Wang
Research Assistant
Cognitive Neuroscience Laboratory
Washington University
Department of Psychology, Campus Box 1125
One Brookings Drive
St. Louis MO 63130-4899
314-935-5019
[EMAIL PROTECTED]
--
brian t. quinn
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