Open AccessForward model for propagation-based x-ray phase contrast imaging in parallel- and cone-beam geometry
Author(s) -
Elisabeth R. Shanblatt,
Yongjin Sung,
Rajiv Gupta,
Brandon J. Nelson,
Shuai Leng,
W. Graves,
Cynthia H. McCollough
Publication year - 2019
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.004504
Subject(s) - paraxial approximation , optics , physics , wave propagation , beam (structure) , geometrical optics , scattering , phase (matter) , ray tracing (physics) , x ray phase contrast imaging , diffraction , tomographic reconstruction , phase contrast imaging , tomography , phase contrast microscopy , quantum mechanics
We demonstrate a fast, flexible, and accurate paraxial wave propagation model to serve as a forward model for propagation-based X-ray phase contrast imaging (XPCI) in parallel-beam or cone-beam geometry. This model incorporates geometric cone-beam effects into the multi-slice beam propagation method. It enables rapid prototyping and is well suited to serve as a forward model for propagation-based X-ray phase contrast tomographic reconstructions. Furthermore, it is capable of modeling arbitrary objects, including those that are strongly or multi-scattering. Simulation studies were conducted to compare our model to other forward models in the X-ray regime, such as the Mie and full-wave Rytov solutions.