Hi Bruce and all,
Thanks for the suggestion on scaling -- it would be nice if it were
consistent, but it varies quite a lot from scan to scan. At the most,
about 30 of the top slices are affected, but often the number of affected
slices is fewer, and sometimes the spatial extent of the artifact
Hi Andrew
wow, that's pretty strange. The only thing I can think of that might
recover this is to put pairs of control points in the white matter, one
on either side of the boundary of your artifact. Or maybe it always affects
the same slices and you can scale them up? I guess it depends on
