Two-dimensional gratings-based phase-contrast imaging using a conventional x-ray tube Sato, Genta ; Kondoh, Takeshi ; Itoh, Hidenosuke ; Handa, Soichiro ; Yamaguchi, Kimiaki ; Nakamura, Takashi ; Nagai, Kentaro ; Ouchi, Chidane ; Teshima, Takayuki ; Setomoto, Yutaka ; Den, Toru Abstract Publication: Optics Letters Pub Date: September 2011 DOI: 10.1364/OL.36.003551 Bibcode: 2011OptL...36.3551S