A fast-converging iterative method for X-ray in-line phase contrast tomography

DOI: 10.1063/1.4769046

Authors: Nghia T. Vo (Singapore Synchrotron Light Source) , Robert Atwood (Diamond Light Source) , Herbert O. Moser (Karlsruhe Institute of Technology) , Mark B. H. Breese (Singapore Synchrotron Light Source) , Michael Drakopoulos (Diamond Light Source) , Peter D. Lee (University of Manchester)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Applied Physics Letters , VOL 101 (22)

State: Published (Approved)
Published: December 2012

Abstract: X-ray in-line phase contrasttomography holds great promise for the quantitative analysis of soft materials. However, its applications have been limited, so far, by the fact that direct methods based on the transport-of-intensity equation and the contrast transfer function are sensitive to noise and applicable only to limited types of samples. Here, we propose an iterative method based on the Gerchberg-Saxton algorithm (R. W. Gerchberg and W. O. Saxton, Optik 35, 237 (1972)), but overcoming its slow convergence by an acceleration technique, named random signed feedback, which shows an excellent performance, both in numerical simulation and tomographic experiment, of discriminating various polymers even when using 53 keV synchrotron X-rays.

Journal Keywords: Tomography; Fourier Transforms; Medical Image Noise; Medical Imaging; Medical X-Ray Imaging

Subject Areas: Technique Development, Materials
Collaborations: Diamond Manchester

Instruments: I12-JEEP: Joint Engineering, Environmental and Processing

Other Facilities: SSLS

Added On: 04/12/2012 11:29

Discipline Tags:

Technique Development - Materials Science Materials Science

Technical Tags:

Imaging Tomography