I started looking at some of the T1w volumes from the 2013Q2 release. In 2 cases that I noticed, the warped volumes in these subjects' MNINonLinear/ directory show marked bumpiness in the skulls. At first I thought, "phrenologist's delight", but then I checked the original volumes -- alas, no particular bumpiness there. So presumably this bumpiness was induced by the nonlinear registration. The extracted brain-only volumes (T1w_restore_brain.nii.gz) don't look as lumpy. Is the nonlinear warping goodness-of-fit measure confined to the brain volume, and this artifact is induced by edge effects? Or what's going on?
Cases of note are 581349 and 133928. There may be more such lumpy skulls, since this was just a quick perusal. -- bob cox _______________________________________________ HCP-Users mailing list [email protected] http://lists.humanconnectome.org/mailman/listinfo/hcp-users
