Impact of signal non-repeatability on spectral CT images

Gilad Shechter


Published in:Fully3D 2017 Proceedings


We formulate the dependency of band/ring artifacts in spectral CT images on the detector signal non-repeatability. For this purpose we introduce functionals that are proportional to the level of artifacts and contain variables that are measured in the signal domain by non-rotating scans. We set thresholds for these functionals by simulations of rotating scans and use these thresholds to analyze the level of artifacts in a realistic spectral CT system.
Gilad Shechter
Philips medical systems and technologies LTD.
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