An iterative phase retrieval algorithm was previously investigated for in-line x-ray phase imaging. Through detailed theoretical analysis and computer simulations, we now discuss the limitations, robustness, and efficiency of the algorithm. The iterative algorithm was proved robust against imaging noise but sensitive to the variations of several system parameters. It is also efficient in terms of calculation time. It was shown that the algorithm can be applied to phase retrieval based on one phase-contrast image and one attenuation image, or two phase-contrast images; in both cases, the two images can be obtained either by one detector in two exposures, or by two detectors in only one exposure as in the dual-detector scheme.
© 2008 Optical Society of America
Original Manuscript: September 25, 2008
Manuscript Accepted: November 6, 2008
Published: December 19, 2008
Fanbo Meng, Hong Liu, and Xizeng Wu, "Feasibility study of the iterative x-ray phase retrieval algorithm," Appl. Opt. 48, 91-98 (2009)