This work presents a comprehensive catalog of x-ray spectra measured from x-ray tubes with tungsten, molybdenum, and rhodium anodes generated at tube potentials between 10 and 50 kV in steps of 1 kV. They can serve as an input for dose calculations, image quality calculations, investigations of detector features, and validations of computational spectral models, among other things. The measurements are performed by means of a high-purity germanium detector-based spectrometer 1 m from the x-ray sources without any added filtration. The x-ray tubes are characterized by thin beryllium exit windows (0.15−4 mm); thus, for energies above 15 keV, the spectra recorded can be considered approximately unfiltered. This allows potential users of the catalog to computationally add any filter to the spectra in order to create special radiation qualities of their choice. To validate this option, a small number of spectra are recorded with filter materials in place whose purity and thickness are known with high precision. These spectra are compared to the corresponding spectra from the catalog obtained by means of computationally added filters. The two types of spectra agree extremely well. Several typical mammographic radiation qualities are selected to compare the spectra obtained from the catalog presented here with corresponding spectra obtained from other catalogs published by Boone et al (1997 Med. Phys. 24 1863–74) and Hernandez et al (2017 Med. Phys. 44 2148–60). In contrast to the work presented here, those spectra rely partly or fully on calculations. A quantitative comparison is made by means of typical x-ray quality descriptors such as the mean energy and the first and second half-value layer. The results obtained from the Boone catalog match those of the current catalog sufficiently well for the Mo- and Rh-anode-based spectra. However, significant differences up to 10 times the estimated uncertainties are found for the quality descriptors evaluated from the spectra of Hernandez et al and the W-anode based spectra of Boone et al.

这项工作提供了一个全面的 X 射线光谱目录，该目录是从具有钨、钼和铑阳极的 X 射线管在 10 到 50 kV 的管电位下以 1 kV 的步长产生的。它们可以作为剂量计算、图像质量计算、检测器特征研究和计算光谱模型验证等的输入。测量是通过一个高纯度锗探测器光谱仪在距离 X 射线源 1 m 处进行的，无需任何额外的过滤。X 射线管的特点是薄的铍出射窗（0.15-4 毫米）；因此，对于 15 keV 以上的能量，记录的光谱可以认为是近似未过滤的。这允许目录的潜在用户通过计算将任何过滤器添加到光谱中，以创建他们选择的特殊辐射质量。为了验证这个选项，少量的光谱被记录在适当的位置，过滤材料的纯度和厚度都是以高精度已知的。这些光谱与通过计算添加的过滤器获得的目录中的相应光谱进行比较。这两种类型的光谱非常吻合。选择了几种典型的乳房 X 线摄影辐射质量，以比较从此处提供的目录中获得的光谱与从 Boone 发布的其他目录中获得的相应光谱 这些光谱与通过计算添加的过滤器获得的目录中的相应光谱进行比较。这两种类型的光谱非常吻合。选择了几种典型的乳房 X 线摄影辐射质量，以将从此处提供的目录中获得的光谱与从 Boone 发布的其他目录中获得的相应光谱进行比较 这些光谱与通过计算添加的过滤器获得的目录中的相应光谱进行比较。这两种类型的光谱非常吻合。选择了几种典型的乳房 X 线摄影辐射质量，以将从此处提供的目录中获得的光谱与从 Boone 发布的其他目录中获得的相应光谱进行比较等人(1997 Med. Phys. 24 1863–74) 和 Hernandez等人(2017 Med. Phys. 44 2148–60)。与这里介绍的工作相比，这些光谱部分或完全依赖于计算。通过典型的 X 射线质量描述符（例如平均能量和第一个和第二个半值层）进行定量比较。从 Boone 目录中获得的结果与当前目录中的结果非常匹配，适用于基于 Mo 和 Rh 阳极的光谱。然而，从 Hernandez等人的光谱和 Boone等人的基于 W 阳极的光谱评估的质量描述符发现了高达估计不确定性的 10 倍的显着差异。