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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...
Tomosynthesis is one of three-dimensional imaging techniques that can remove the effect of overlapping phenomena in radiography, except for computed tomography (CT). In general, CT needs at least hundreds of projections to reconstruct every cross-sectional slice of the samples accurately, while tomosynthesis just requires dozens of projections to reconstruct a series of tomosynthetic slices approximately,...
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...
Industrial CT system is a precision instrument for internal structure and defects inspection of complex objects. High precision X-ray data must be acquired in real-time and transmitted exactly. As a important part of the industrial CT system, data acquisition system must meet the above requirements. In this paper we propose the design and realization of the data acquisition system based on the switched...
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