Graduate School of Medical Sciences, Kanazawa University, Ishikawa, 920-0942, Japan.
Graduate School of Medical Sciences, Kanazawa University, Ishikawa, 920-0942, Japan; Division of Radiology, Medical Support Department, Okayama University Hospital, Okayama, 700-8558, Japan.
Appl Radiat Isot. 2021 Apr;170:109617. doi: 10.1016/j.apradiso.2021.109617. Epub 2021 Feb 2.
In this study, we propose an effective atomic number (Z) determination method based on a photon-counting technique. The proposed method can correct for the beam hardening effect and detector response based on polychromatic X-rays to allow high accuracy material identification. To demonstrate the effectiveness of our method, the procedure was applied to X-ray images acquired by a prototype energy-resolving photon-counting detector and we obtained an Z image with accuracy of Z ± 0.5 regardless of the mass thickness.
在这项研究中，我们提出了一种基于光子计数技术的有效原子序数（Z）确定方法。该方法可以根据多色 X 射线校正束硬化效应和探测器响应，从而实现高精度的材料识别。为了验证我们方法的有效性，我们将该程序应用于原型能谱分辨光子计数探测器获取的 X 射线图像，无论质量厚度如何，我们都能获得精度为 Z ± 0.5 的 Z 图像。
