Simulation study of phase retrieval for hard X-ray in-line phase contrast imaging

• Published in: Science China. Physics, mechanics & astronomy Vol. 48; no. 4; pp. 450 - 458
• Main Authors: Yu, Bin, Peng, Xiang, Tian, Jindong, Niu, Hanben, Diao, Luhong, Li, Hua
• Format: Journal Article
• Language: English
• Published: Beijing Springer Nature B.V 01.08.2005; Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education, Institute of Optoelectronics, Shenzhen University, Shenzhen 518060, China; State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072,China%Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education, Institute of Optoelectronics, Shenzhen University, Shenzhen 518060, China%Key Laboratory of Intelligent Information Processing, Institute of Computing Technology, Chinese Academy of Sciences, Beijing 100080,China
• Subjects: Algorithms; Computer simulation; Phase contrast; Phase retrieval; X ray imagery; phase retrieval; hard X-ray; angular spectrum; phase contrast imaging; X-ray optics
• ISSN: 1672-1799; 1674-7348; 1869-1927
• DOI: 10.1360/142004-107

Two algorithms for the phase retrieval of hard X-ray in-line phase contrast imaging are presented. One is referred to as lterative Angular Spectrum Algorithm (IASA) and the other is a hybrid algorithm that combines IASA with TIE (transport of intensity equation). The calculations of the algorithms are based on free space propagation of the angular spectrum. The new approaches are demonstrated with numerical simulations. Comparisons with other phase retrieval algorithms are also performed. It is shown that the phase retrieval method combining the IASA and TIE is a promising technique for the application of hard X-ray phase contrast imaging.