Robust Energy Calibration Technique for Photon Counting Spectral Detectors
Robust Energy Calibration Technique for Photon Counting Spectral Detectors
复制标题
光子计数光谱探测器的鲁棒能量校准技术
DOI:
10.1109/tmi.2018.2875932
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发表时间:
2018
影响因子:
10.6
通讯作者:
Das, Mini
中科院分区:
文献类型:
--
作者:
Vespucci, Stefano;Park, Chan Soo;Torrico, Raul;Das, Mini
This paper describes the implementation of a novel and robust threshold energy calibration method for photon counting detectors using polychromatic X-ray tubes. Methods often used for such energy calibration may require re-orientation of the detector or introduce calibration errors that are flux and acquisition time-dependent. Our newly proposed “differential intensity ratios” (DIR) method offers a practical and robust alternative to existing methods. We demonstrate this robustness against photon flux used in calibration, spectral errors such as pulse pile-up as well as the detector's inherent spectral resolution limits. The demonstrated significant insensitivity of the proposed DIR signature to detector spectral distortions and energy resolution is a key finding. The proposed DIR calibration method is demonstrated using Medipix3RX detectors with a CdTe sensor under varying flux conditions. A per pixel calibration using the DIR method has also been implemented to demonstrate an improvement over the global energy resolution of the PCD.
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DOI:
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发表时间:
1999
期刊:
影响因子:
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作者:
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2003
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通讯作者:
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影响因子:
3.8
作者:
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通讯作者:
Barber, William C.
影响因子:
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作者:
N. Fredette;Cale E. Lewis;M. Das
通讯作者:
M. Das