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Material decomposition in spectral CT will amplify the noise, and the reconstructed image can be noisy and suffers from severe ring artifacts due to pixel inconsistency in photon counting detectors. Meanwhile, the images reconstructed directly from the polychromatic projections have much less artifacts and share the same structural information with the material images, which can be utilized to suppress...
With the source and detector kept stationary while an inspected object moves between them, straight-line-trajectory-based tomographic imaging (SLTTI) has the capability to provide both digital radiologic images and tomographic images simultaneously, at high speed and with low-cost equipment. It has a promising future for fast security inspection for air cargo examinations. In order to fully investigate...
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