ADD: testing for NIFTI dfields


git-svn-id: https://www.nitrc.org/svn/cmtk/trunk@5230 42a5c34f-2066-0410-bec5-ba365beb4995
DOC


git-svn-id: https://www.nitrc.org/svn/cmtk/trunk@5231 42a5c34f-2066-0410-bec5-ba365beb4995