X-ray beam hardening correction by minimizing reprojection distance
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]
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|Source:||Proceedings of SPIE - International Society for Optical Engineering|
|01_Kingston_X-ray_beam_hardening_2012.pdf||606.28 kB||Adobe PDF||Request a copy|
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