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

DOI: 10.1063/1.4769046 DOI Help

Authors: Nghia T. Vo (SSLS) , Robert Atwood (Diamond Light Source) , Herbert O. Moser (Karlsruhe Institute of Technology) , Mark B. H. Breese (SSLS) , Michael Drakopoulos (Diamond Light Source) , Peter 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‚ÄČkeV synchrotron X-rays.

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

Subject Areas: Technique Development
Collaborations: Diamond Manchester

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

Other Facilities: SSLS

Added On: 04/12/2012 11:29

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