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Reducing beam hardening effects and metal artefacts using Medipix3RX: With applications from biomaterial science

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arxiv 1311.5303 v1 pith:X4ZBJOYT submitted 2013-11-21 physics.med-ph physics.ins-det

Reducing beam hardening effects and metal artefacts using Medipix3RX: With applications from biomaterial science

K. Rajendran , M. F. Walsh , N. J. A. de Ruiter , A. I. Chernoglazov , R. K. Panta , A. P. H. Butler , P. H. Butler , S. T. Bell
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N. G. Anderson T. B. F. Woodfield S. J. Tredinnick J. L. Healy C. J. Bateman R. Aamir R. M. N. Doesburg P. F. Renaud S. P. Gieseg D. J. Smithies J. L. Mohr V. B. H. Mandalika A. M. T. Opie N. J. Cook J. P. Ronaldson S. J. Nik A. Atharifard M. Clyne P. J. Bones C. Bartneck R. Grasset N. Schleich M. Billinghurst
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classification physics.med-ph physics.ins-det
keywords beamhardeningartefactseffectsmetalreducingspectralapplications
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This paper discusses methods for reducing beam hardening effects using spectral data for biomaterial applications. A small-animal spectral scanner operating in the diagnostic energy range was used. We investigate the use of photon-processing features of the Medipix3RX ASIC in reducing beam hardening and associated artefacts. A fully operational charge summing mode was used during the imaging routine. We present spectral data collected for metal alloy samples, its analysis using algebraic 3D reconstruction software and volume visualisation using a custom volume rendering software. Narrow high energy acquisition using the photon-processing detector revealed substantial reduction in beam hardening effects and metal artefacts.

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