title: A simplified approach to quantitative coded aperture X-ray phase imaging.
abstract: We recently demonstrated how quantitative X-ray phase contrast imaging may be performed with laboratory sources using the coded aperture technique. This technique required the knowledge of system parameters such as, for example, the source focal spot size and distances between elements of the imaging system. The method also assumes that the absorbing regions of the apertures are perfectly absorbing. In this paper we demonstrate how quantitative imaging can be performed without knowledge of individual system parameters and with partially absorbing apertures. We also show that this method is analogous to that employed in analyser based imaging which uses the rocking curve of an analyser crystal.
authors.affiliation: Optical + Biomedical Engineering Laboratory, School of Electrical, Electronic and Computer Engineering, The University of Western Australia, 35 Stirling Highway, Crawley, Western Australia 6009, Australia. peter.munro@uwa.edu.au
authors.forename: Peter R T
authors.initials: PR
authors.lastname: Munro
authors.forename: Charlotte K
authors.initials: CK
authors.lastname: Hagen
authors.forename: Magdalena B
authors.initials: MB
authors.lastname: Szafraniec
authors.forename: Alessandro
authors.initials: A
authors.lastname: Olivo
mesh_terms: D000465:Algorithms; D011856:Radiographic Image Enhancement / Q000379:methods*; D014961:X-Ray Diffraction / Q000295:instrumentation* / Q000379:methods*