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High-energy 3-D X-ray tomography for container inspection

: Fuchs, Theobald O.J.; Sukowski, Frank; Schorr, Christian; Schön, Tobias; Schröpfer, Stefan; Hassler, Ulf; Hofmann, Thomas; Reims, Nils; Firsching, Markus; Tigkos, Konstantinos; Heusinger, Victoria; Moser, Stefan; Langkemper, Ralph; Nau, Siegfried

Fulltext urn:nbn:de:0011-n-2754141 (3.5 MByte PDF)
MD5 Fingerprint: 13f7526e3403d50fd51d68e25bc83aab
Created on: 19.2.2014

Lauster, Michael (Hrsg.) ; Fraunhofer Verbund Verteidigungs- und Sicherheitsforschung; Fraunhofer-Institut für Naturwissenschaftlich-Technische Trendanalysen -INT-, Euskirchen:
8th Future Security 2013. Security Research Conference : Berlin, September 17 - 19, 2013. Proceedings
Stuttgart: Fraunhofer Verlag, 2013
ISBN: 3-8396-0604-7
ISBN: 978-3-8396-0604-9
Security Research Conference "Future Security" <8, 2013, Berlin>
Bundesministerium für Bildung und Forschung BMBF
13N10993; ECSIT
Conference Paper, Electronic Publication
Fraunhofer EMI ()
Fraunhofer IZFP ()
x-ray; 3D-CT

Within the ECSIT project, Fraunhofer EMI and EZRT evaluated methods and technologies to enable high-energy 3-D imaging for inspection of large objects like sea freight containers.
In particular, the efforts focused on the following: high-energy 3-D X-ray physics, inspection procedures for large objects, material-selective Computed Tomography (CT), 2-D and 3-D image processing to support the detection of illicit contents in packed goods and the development of radiation-resistant X-ray sensors as well as high-intensity X-ray sources.
The physical aspects of transmission measurements were optimized based on a simulation study. Among these parameters were the distance of the linear accelerator’s focus to the rotational axis, the spatial resolution in dependency on the pixel pitch of a linear detector array (LDA) with 10,000 elements, and collimation as well as alignment of the X-ray fan.
To test the system we used a 10’-container packed with various typical goods like furniture or consumer electronics. Filtered back-projection techniques were applied to reconstruct slice images from about 800 projections.
We show real 3-D volume data of large objects measured with the set-up as described above. A first qualitative evaluation shows the capability of the high-energy CT-system to deliver images that allow for a recognition of various items by shape, size and internal construction. In addition, the images allow for an estimation of the mass density of larger amounts of homogeneous materials.