Energy calibration of photon counting detectors using a single monochromatic source

doi:10.16511/j.cnki.qhdxxb.2016.22.031

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Abstract Photon counting detectors (PCDs) are important in spectral X-ray imaging and computed tomography (CT) systems. Various PCD energy calibration methods have been developed but have many limitations because of the influences of the pulse pileup, charge sharing and other physical effects. This paper describes a calibration method using only one monochromatic source. An iterative technique is used to fully analyze the data to determine the energy for various thresholds. The method gives good results with fewer tests than other calibration methods. The charge sharing effect is implicitly corrected, which is an important factor in the calibration of small pixel detectors. This method is quite universal and can be used to calibrate other PCDs.

Keywords photon counting detector spectral computed tomography (CT) energy calibration charge sharing

ZTFLH:

TL816+.1

Issue Date: 15 June 2016

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	FENG Chuqing
	SHEN Qi
	KANG Kejun
	XING Yuxiang

Cite this article:

FENG Chuqing,SHEN Qi,KANG Kejun, et al. Energy calibration of photon counting detectors using a single monochromatic source[J]. Journal of Tsinghua University(Science and Technology), 2016, 56(6): 672-676.

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http://jst.tsinghuajournals.com/EN/10.16511/j.cnki.qhdxxb.2016.22.031 OR http://jst.tsinghuajournals.com/EN/Y2016/V56/I6/672

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