title: Amplification of the phase contrast signal at very high x-ray energies.
abstract: X-ray phase contrast imaging is increasingly being used in several fields, both at synchrotron facilities and with laboratory sources, due to its increased sensitivity compared to conventional x-ray methods. One important problem is the development of methods to make it suitable for use at very high x-ray energies, needed in many applications. We show how the edge illumination concept, which stands at the basis of the coded-aperture method, allows achieving hyperintense phase signals at energies close to 100 keV, by showing images of both weak phase objects and highly absorbing fossils with a high iron content.
authors.affiliation: Department of Medical Physics and Bioengineering, UCL, London WC1E 6BT, UK. aolivo@medphys.ucl.ac.uk
authors.forename: Alessandro
authors.initials: A
authors.lastname: Olivo
authors.forename: Paul C
authors.initials: PC
authors.lastname: Diemoz
authors.forename: Alberto
authors.initials: A
authors.lastname: Bravin
mesh_terms: D000818:Animals; D049830:Cephalopoda / Q000378:metabolism; D007501:Iron / Q000378:metabolism; D057054:Molecular Imaging / Q000379:methods*; D055620:Optical Phenomena; D014965:X-Rays
chemical_list: D007501:Iron