Archer B R, Fewell T R, Wagner L K
Department of Radiology, Baylor College of Medicine, Houston, Texas 77030.
Med Phys. 1988 Nov-Dec;15(6):832-7. doi: 10.1118/1.596198.
This paper displays the results of a blind study used to determine the capability of a Laplace transform pair model to accurately reconstruct diagnostic x-ray spectra from experimental attenuation data. Spectra reconstructed from attenuation measurements are compared to experimental spectra obtained on the same unit using an intrinsic germanium spectrometer system. The results show that when pure attenuation materials are used, good agreement is obtained between the experimental and computed spectra. If an alloy attenuator like 1100 aluminum is used, the proportion of contaminants must be included in the Laplace formulation for accurate reconstruction.
本文展示了一项盲法研究的结果，该研究用于确定拉普拉斯变换对模型从实验衰减数据中准确重建诊断X射线光谱的能力。将根据衰减测量重建的光谱与使用锗本征光谱仪系统在同一设备上获得的实验光谱进行比较。结果表明，当使用纯衰减材料时，实验光谱与计算光谱之间取得了良好的一致性。如果使用像1100铝这样的合金衰减器，在拉普拉斯公式中必须包含污染物的比例才能进行准确的重建。
