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Proceedings Paper

Laboratory implementation of edge illumination X-ray phase-contrast imaging with energy-resolved detectors
Author(s): P. C. Diemoz; M. Endrizzi; F. A. Vittoria; C. K. Hagen; G. Kallon; D. Basta; M. Marenzana; P. Delogu; A. Vincenzi; L. De Ruvo; G. Spandre; A. Brez; R. Bellazzini; A. Olivo
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Paper Abstract

Edge illumination (EI) X-ray phase-contrast imaging (XPCI) has potential for applications in different fields of research, including materials science, non-destructive industrial testing, small-animal imaging, and medical imaging. One of its main advantages is the compatibility with laboratory equipment, in particular with conventional non-microfocal sources, which makes its exploitation in normal research laboratories possible. In this work, we demonstrate that the signal in laboratory implementations of EI can be correctly described with the use of the simplified geometrical optics. Besides enabling the derivation of simple expressions for the sensitivity and spatial resolution of a given EI setup, this model also highlights the EI’s achromaticity. With the aim of improving image quality, as well as to take advantage of the fact that all energies in the spectrum contribute to the image contrast, we carried out EI acquisitions using a photon-counting energy-resolved detector. The obtained results demonstrate that this approach has great potential for future laboratory implementations of EI.

Paper Details

Date Published: 18 March 2015
PDF: 7 pages
Proc. SPIE 9412, Medical Imaging 2015: Physics of Medical Imaging, 94120K (18 March 2015); doi: 10.1117/12.2082041
Show Author Affiliations
P. C. Diemoz, Univ. College London (United Kingdom)
M. Endrizzi, Univ. College London (United Kingdom)
F. A. Vittoria, Univ. College London (United Kingdom)
C. K. Hagen, Univ. College London (United Kingdom)
G. Kallon, Univ. College London (United Kingdom)
D. Basta, Univ. College London (United Kingdom)
M. Marenzana, Kennedy Institute of Rheumatology, Univ. of Oxford (United Kingdom)
P. Delogu, Istituto Nazionale di Fisica Nucleare (Italy)
Univ. di Pisa (Italy)
A. Vincenzi, PIXIRAD Imaging Counters s.r.l. (Italy)
L. De Ruvo, Istituto Nazionale di Fisica Nucleare (Italy)
G. Spandre, Istituto Nazionale di Fisica Nucleare (Italy)
PIXIRAD Imaging Counters s.r.l. (Italy)
A. Brez, Istituto Nazionale di Fisica Nucleare (Italy)
PIXIRAD Imaging Counters s.r.l. (Italy)
R. Bellazzini, Istituto Nazionale di Fisica Nucleare (Italy)
PIXIRAD Imaging Counters s.r.l. (Italy)
A. Olivo, Univ. College London (United Kingdom)


Published in SPIE Proceedings Vol. 9412:
Medical Imaging 2015: Physics of Medical Imaging
Christoph Hoeschen; Despina Kontos, Editor(s)

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