X-ray absorption tomography employing a conical shell beam

Evans, J.P.O., Godber, S.X., Elarnaut, F. ORCID: 0000-0003-0189-6665, Downes, D. ORCID: 0000-0002-4886-5260, Dicken, A.J. and Rogers, K.D., 2016. X-ray absorption tomography employing a conical shell beam. Optics Express, 24 (25), p. 29048. ISSN 1094-4087

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We demonstrate depth-resolved absorption imaging by scanning an object through a conical shell of X-rays. We measure ring shaped projections and apply tomosynthesis to extract optical sections at different axial focal plane positions. Three-dimensional objects have been imaged to validate our theoretical treatment. The novel principle of our method is scalable with respect to both scan size and X-ray energy. A driver for this work is to
complement previously reported methods concerning the measurement of diffracted X-rays for structural analysis. The prospect of employing conical shell beams to combine both absorption and diffraction modalities would provide enhanced analytical utility and has many potential applications in security screening, process control and diagnostic imaging.

Item Type: Journal article
Publication Title: Optics Express
Creators: Evans, J.P.O., Godber, S.X., Elarnaut, F., Downes, D., Dicken, A.J. and Rogers, K.D.
Publisher: OSA (The Optical Society of America) Publishing
Date: 12 December 2016
Volume: 24
Number: 25
ISSN: 1094-4087
Rights: Open access. ©2016 Optical Society of America.
Divisions: Schools > School of Art and Design
Schools > School of Science and Technology
Record created by: Jill Tomkinson
Date Added: 07 Mar 2017 11:08
Last Modified: 09 Jun 2017 14:13
URI: https://irep.ntu.ac.uk/id/eprint/30309

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