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Terahertz (THz) pulse imaging can provide not only the image, but also the constituent of the detected object. However, various noises from THz source, detector and other parts will decrease the image quality. In this paper, a THz image of a metal hoop was obtained by pulse THz waves, and the finite impulse response digital filter was used to remove the low frequency noise caused by the unstability...
The goal of this study was to evaluate the effect of beam hardening on the detective quantum efficiency and the radiation dose provided by the imaging system. Both studies involved a comparison of values determined without added beam hardening to those resulting from a range of beam hardening. Under the specific experimental conditions of the study, the detective quantum efficiency comparison revealed...
Spectral computed tomography (CT) is a new approach for medical diagnosis. Where traditional methods deliver a unique 3D volumetric dataset, spectral CT supplies multiple 3D volumetric datasets (energy bins). The novelty of this technique creates new opportunities and new challenges regarding visualization of the acquired data. In this paper we describe our approach and effort for providing high quality...
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