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《Computerized Tomography Theory and Applications》 2018-03
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Energy Calibration Method of the Photon Counting Detector Based on Continuous X-ray Spectrum

LI Zhong-hao;YUN Ming-kai;JIANG Xiao-pan;ZHANG Zhi-du;CHENG Zhi-wei;WEI Cun-feng;SHI Rong-jian;WEI Long;WANG Zhe;Beijing Engineering Research Center of Radiographic Techniques and Equipment, Institute of High Energy Physics, Chinese Academy of Sciences;School of Nuclear Science and Technology, University of Chinese Academy of Sciences;  
With the development of the detector technology, the energy discriminating photon counting detectors have been widely used in Spectral CT imaging. The relationship between energy and threshold is very important for Spectral CT Imaging. Being subjected to experiment conditions, the current energy calibration methods of photon counting detector have some limitations. In order to solve single pixel energy calibration of photon counting detector, this paper describes an energy calibration methods using continuous X-ray Spectrum. Energy information of the high energy end in continuous spectrum is used to determine the relationship between energy and threshold by building and analyzing X-ray model. Experimental results show that this method has the advantages of convenient operation and relatively accurate result, which can also be referenced by other energy calibration methods.
【Fund】: 国家重点研发计划(2016YFC0100400);; 中国科学院科研装备研制项目(YZ201511);中国科学院关键技术研发团队项目(GJJSTD20170005)
【CateGory Index】: O434.1;TP391.41
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