Hi Steve,
Thank you for the advice regarding post-operative TBSS. I was wondering
whether the following would be another way of getting around the problem of
having to use masks. Could one take the pre-op images in each subject and
co-register (no non-linear transformations) them to each subject's post-op
image (each subject having had a similar standard operation, though with
slightly varying amounts of tissue removed). Could one then use the
co-registered pre-op images to derive the non-linear transformation, and
apply this to the post-op images, before then proceeding. Is this a valid
method, although I appreciate scan-rescan variability may be the source of
some error.
Thanks.
Mahinda
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