Abstract

Info

Title:: Numerical simulation of X-ray grating phase contrast imaging system based on projection

Author(s):: LUO Ronghui; WU Zhao; TIAN Yangchao; National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230026, China

Keywords:: ; Keywords: X-ray; grating phase contrast imaging; computer numerical simulation; linear system

Abstract:: Abstract: With the larger view and higher imaging energy, the technology of X-ray grating phase contrast imaging based on projection is expected to achieve clinical application. However, it was complex and difficult to determine the appropriate structure parameters when the imaging device is designed, because the system contains many optical components. By some reasonable assumptions, a computer numerical simulation model of the system is built, and it is a good choice using the powerful cycle calculation ability of computer to analyze the effect of related parameters on system performance and realize the parameters optimization. Herein, the imaging system was abstracted as a linear system, and base on that, a mathematical model was built according to the principle the X-ray grating phase contrast imaging system. And then, the mathematical model was turned into a discrete model which was suitable for computer, realizing the simulation of X-ray grating phase contrast imaging system based on projection. Finally, the correctness of the simulation was verified using the experimental data acquired from the phase contrast platform at the National Synchrotron Radiation Laboratory.