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Dual-energy computed tomography (DECT) allows one to obtain both density and atomic number and thus can provide information about material composition of scanned objects. In this paper, we extend a basis material decomposition method for high energy X-ray DECT used in cargo inspection. It differs from conventional DECT reconstruction methods by pair-production effect coming into play in the reconstruction...
A classic-optics-based grating-based attenuation-refraction-scattering radiographic & computed tomographic experimental system with a conventional X-ray tube has been built to synchronously reconstruct the distributions of the linear attenuation coefficient, refractive index gradient and generalized scattering parameter of a tested sample in only one computed tomographic scanning process. System...
In dual energy computerized tomography (DECT) which is widely used in industrial areas and security inspection, metal artifact reduction (MAR) is a troublesome problem. Pronounced streaks appear in the atomic number reconstruction and the value appears to be highly inaccurate when metal objects are present. In this article, a practical MAR method for DECT is proposed. Firstly, sinogram segmentation...
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