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- W2541330789 abstract "The design of a CT detector requires a precise detector model, since building prototypes for many different proposed detector geometries is too costly. We introduce a look-up table-based simulation of scintillation detectors on X-ray photon level. It uses energy-resolved sinograms of incoming X-ray intensities as input data and generates photon counts for each channel and reading. The effects of X-ray- and optical cross-talk, temporal cross-talk between readings, Poisson noise and electronics effects are covered. The photon interaction data as well as optical cross-talk distribution are provided in the form of detector specific look-up tables. Unlike standard Monte-Carlo simulations of X-ray interaction processes, our approach is capable of simulating whole sinograms in a reasonable amount of time and still offers a very high precision of the detector model. This way the influence of detector effects can be investigated in the reconstructed image data. The simulation is verified against data measured with a CT scanner and data from a fully single photon-based Monte-Carlo simulation in terms of image modulation transfer function (MTF) and detector noise power spectrum (NPS)." @default.
- W2541330789 created "2016-11-04" @default.
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- W2541330789 date "2008-10-01" @default.
- W2541330789 modified "2023-09-25" @default.
- W2541330789 title "Look-up table-based simulation of scintillation detectors in computed tomography" @default.
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- W2541330789 doi "https://doi.org/10.1109/nssmic.2008.4774168" @default.
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