X-ray backscatter radiography with lower open fraction coded masks

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dc.contributor.author Munoz, Andre Arelius Marcus
dc.contributor.author Vella, Anna
dc.contributor.author Healy, M. J. F.
dc.contributor.author Lane, David W.
dc.contributor.author Jupp, Ian
dc.contributor.author Lockley, D.
dc.date.accessioned 2017-10-18T11:05:26Z
dc.date.available 2017-10-18T11:05:26Z
dc.date.issued 2017-08-10
dc.identifier.citation Munoz AAM, Vella A, Healy MJF, Lane DW, Jupp I, Lockley D (2017). X-ray backscatter radiography with lower open fraction coded masks; Proceedings of SPIE 10393; Radiation Detectors in Medicine, Industry, and National Security XVIII 103930A (DOI: 10.1117/12.2273784) en_UK
dc.identifier.issn 0277-786X
dc.identifier.uri http://dspace.lib.cranfield.ac.uk/handle/1826/12656
dc.description Copyright 2017 Society of Photo-Optical Instrumentation Engineers (SPIE). 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. en_UK
dc.description.abstract Single sided radiographic imaging would find great utility for medical, aerospace and security applications. While coded apertures can be used to form such an image from backscattered X-rays they suffer from near field limitations that introduce noise. Several theoretical studies have indicated that for an extended source the images signal to noise ratio may be optimised by using a low open fraction (<0.5) mask. However, few experimental results have been published for such low open fraction patterns and details of their formulation are often unavailable or are ambiguous. In this paper we address this process for two types of low open fraction mask, the dilute URA and the Singer set array. For the dilute URA the procedure for producing multiple 2D array patterns from given 1D binary sequences (Barker codes) is explained. Their point spread functions are calculated and their imaging properties are critically reviewed. These results are then compared to those from the Singer set and experimental exposures are presented for both type of pattern; their prospects for near field imaging are discussed. en_UK
dc.publisher SPIE en_UK
dc.title X-ray backscatter radiography with lower open fraction coded masks en_UK
dc.type Conference paper en_UK

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