Model-based inter- and intra-panel inconsistency correction for photon counting detector CT

Mang Feng; Xu Ji; Ran Zhang; Ke Li

doi:10.1117/12.2580817

15 February 2021 Model-based inter- and intra-panel inconsistency correction for photon counting detector CT

Mang Feng, Xu Ji, Ran Zhang, Ke Li

Proceedings Volume 11595, Medical Imaging 2021: Physics of Medical Imaging; 115951V (2021) https://doi.org/10.1117/12.2580817
Event: SPIE Medical Imaging, 2021, Online Only

Abstract

Due to the subtle variations of energy response functions across photoconductive panels, photon counting detector CT are subject to severe banding artifacts. This work presents a physics based method to correct for these artifacts. It employs calibration objects with known thicknesses and composition to estimate the panel-specific response functions, which are used to concert the raw photon counting projection data of an arbitrary image object into acrylic- and aluminum-equivalent pathlengths. Experimental results show the method not only remove the banding artifacts but also address the beam hardening artifacts.

Conference Presentation

Citation Download Citation

Mang Feng, Xu Ji, Ran Zhang, and Ke Li "Model-based inter- and intra-panel inconsistency correction for photon counting detector CT", Proc. SPIE 11595, Medical Imaging 2021: Physics of Medical Imaging, 115951V (15 February 2021); https://doi.org/10.1117/12.2580817

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