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X-ray beam hardening correction by minimizing reprojection distance

Kingston, Andrew; Myers, Glenn; Varslot, Trond


We address the problem of tomographic image quality degradation due to the effects of beam hardening when using a polychromatic X-ray source. Beam hardening refers to the preferential attenuation of low-energy (or soft) X-rays resulting in a beam with a higher average energy (i.e., harder). In projection images, thin or low-Z materials appear more dense relative to thick or higher-Z materials. This misrepresentaion produces artifacts in the reconstructed image such as cupping and streaking. Our...[Show more]

CollectionsANU Research Publications
Date published: 2012
Type: Journal article
Source: Proceedings of SPIE - International Society for Optical Engineering
DOI: 10.1117/12.928883


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