Increased robustness and speed in low-dose phase-contrast tomography with laboratory sources

Anna Zamir; Charlotte K. Hagen; Paul C. Diemoz; Marco Endrizzi; Fabio A. Vittoria; Luca Urbani; Paolo De Coppi; Alessandro Olivo

doi:10.1117/12.2236626

4 October 2016 Increased robustness and speed in low-dose phase-contrast tomography with laboratory sources

Anna Zamir, Charlotte K. Hagen, Paul C. Diemoz, Marco Endrizzi, Fabio A. Vittoria, Luca Urbani, Paolo De Coppi, Alessandro Olivo

Author Affiliations +

Proceedings Volume 9967, Developments in X-Ray Tomography X; 996716 (2016) https://doi.org/10.1117/12.2236626
Event: SPIE Optical Engineering + Applications, 2016, San Diego, California, United States

Abstract

In this article we discuss three different developments in Edge Illumination (EI) X-ray phase contrast imaging (XPCi), all ultimately aimed at optimising EI computed tomography (CT) for use in different environments, and for different applications. For the purpose of reducing scan times, two approaches are presented; the reverse projection" acquisition scheme which allows a continuous rotation of the sample, and the single image" retrieval algorithm, which requires only one frame for retrieval of the projected phase map. These are expected to lead to a substantial reduction of EI CT scan times, a prospect which is likely to promote the translation of EI into several applications, including clinical. The last development presented is the "modified local" phase retrieval. This retrieval algorithm is specifically designed to accurately retrieve sample properties (absorption, refraction, scattering) in cases where high-resolution scans are required in non-ideal environments. Experimental results, using both synchrotron radiation and laboratory sources, are shown for the various approaches.

Conference Presentation

Citation Download Citation

Anna Zamir, Charlotte K. Hagen, Paul C. Diemoz, Marco Endrizzi, Fabio A. Vittoria, Luca Urbani, Paolo De Coppi, and Alessandro Olivo "Increased robustness and speed in low-dose phase-contrast tomography with laboratory sources", Proc. SPIE 9967, Developments in X-Ray Tomography X, 996716 (4 October 2016); https://doi.org/10.1117/12.2236626

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