A Reconfigurable energy-resolving method for a layered edge-on detector
Abstract
Currently, most of the x-ray spectral detectors can extract signals in a set number of energy bins, that inevitably reduces the dynamic range and energy resolution of the imaging system. Inspired by the idea of dynamic thresholding, we previously proposed a pixel architecture and an energy-resolving method for layered edge-on detector. However, the complicated energy exchange mechanism of x-rays in the detector that ultimately affects the practical applications of the layered detectors had not been previously considered. In this study, we modify the energy-depositing model of x-ray photons and propose a reconfigurable energy-resolving method to improve the spectral performance of a layered energy integrating detector. We analyze the errors associated with the energy-resolving process and present our numerical simulation results obtained with energy bins and dynamically changed detection layers to demonstrate the utility and reliability of the proposed method.
- Publication:
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Physics in Medicine and Biology
- Pub Date:
- July 2019
- DOI:
- 10.1088/1361-6560/ab1149
- Bibcode:
- 2019PMB....64m5008S
- Keywords:
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- spectral imaging;
- dynamic thresholding;
- energy depositing;
- layered energy-integrating detector