eprintid: 1524245
rev_number: 27
eprint_status: archive
userid: 608
dir: disk0/01/52/42/45
datestamp: 2016-11-01 16:26:24
lastmod: 2021-10-23 02:02:19
status_changed: 2016-11-01 16:26:24
type: proceedings_section
metadata_visibility: show
creators_name: Astolfo, A
creators_name: Endrizzi, M
creators_name: Price, B
creators_name: Haig, I
creators_name: Olivo, A
title: The first large-area, high-X-ray energy phase contrast prototype for enhanced detection of threat objects in baggage screening
ispublished: pub
divisions: UCL
divisions: B04
divisions: C05
divisions: F42
keywords: security, baggage screening, x-ray phase contrast, edge-illumination, dark-field imaging, multimodal imaging
note: Copyright © 2016 Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
abstract: X-ray imaging is the most commonly used method in baggage screening. Conventional x-ray attenuation (usually in dual-energy mode) is exploited to discriminate threat and non-threat materials: this is essentially, a method that has seen little changes in decades. Our goal is to demonstrate that x-rays can be used in a different way to achieve improved detection of weapons and explosives. Our approach involves the use of x-ray phase contrast and it a) allows much higher sensitivity in the detection of object edges and b) can be made sensitive to the sample’s microstructure. We believe that these additional channels of information, alongside conventional attenuation which would still be available, have the potential to significantly increase both sensitivity and specificity in baggage scanning. We obtained preliminary data demonstrating the above enhanced detection, and we built a scanner (currently in commissioning) to scale the concept up and test it on real baggage. In particular, while previous X-ray phase contrast imaging systems were limited in terms of both field of view (FOV) and maximum x-ray energy, this scanner overcomes both those limitations and provides FOVs up to 20 to 50 cm2 with x-ray energies up to 100 keV.
date: 2016-09-26
date_type: published
publisher: Society of Photo Optical Instrumentation Engineers (SPIE)
official_url: http://dx.doi.org/10.1117/12.2239556
oa_status: green
full_text_type: pub
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 1188950
doi: 10.1117/12.2239556
lyricists_name: Astolfo, Alberto
lyricists_name: Endrizzi, Marco
lyricists_name: Olivo, Alessandro
lyricists_id: AASTO98
lyricists_id: MENDR57
lyricists_id: AOLIV86
actors_name: Olivo, Alessandro
actors_id: AOLIV86
actors_role: owner
full_text_status: public
series: Proceedings of SPIE
publication: Proceedings of SPIE
volume: 9995
place_of_pub: Edinburgh, UK
pages: 7
event_title: Optics and Photonics for Counterterrorism, Crime Fighting, and Defence XII
event_location: Endinburgh
event_dates: 26 September 2016 - 27 September 2016
institution: Optics and Photonics for Counterterrorism, Crime Fighting, and Defence XII
issn: 0277-786X
book_title: Proceedings of SPIE 9995
editors_name: Burgess, D
editors_name: Owen, G
editors_name: Bouma, H
editors_name: Carlysle-Davies, F
editors_name: Stokes, RJ
editors_name: Yitzhaky, Y
citation:        Astolfo, A;    Endrizzi, M;    Price, B;    Haig, I;    Olivo, A;      (2016)    The first large-area, high-X-ray energy phase contrast prototype for enhanced detection of threat objects in baggage screening.                     In: Burgess, D and Owen, G and Bouma, H and Carlysle-Davies, F and Stokes, RJ and Yitzhaky, Y, (eds.) Proceedings of SPIE 9995.    Society of Photo Optical Instrumentation Engineers (SPIE): Edinburgh, UK.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/1524245/9/Olivo_Astolfo_ProcSPIE_PUBLISHED.pdf