Mathematical Modeling of Radiation Transparencies in the Computational Implementation of the Dual Energy Method Based on the Analog Amplitude Analysis of Initial Signals
IF 0.9 4区 材料科学Q4 MATERIALS SCIENCE, CHARACTERIZATION & TESTING
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引用次数: 0
Abstract
A mathematical model of radiation transparencies in the computational implementation of the dual energy method based on analog discrimination of the initial signals is presented. The generalized mathematical model of radiation transparencies in the analyzed implementation of the dual energy method is based on an analog separation of initial electrical signals from an X-ray detector by amplitude into low- and high-energy signals with subsequent counting of these signals. The analog separation of X-ray detector output signals by amplitude is carried out using a two-channel amplitude analyzer. The proposed model takes into account the maximum energy of X-ray photons, the energy threshold for dividing signals into low- and high-energy ones, materials and sizes of radiation-sensitive detector elements, and parameters of test objects. The model can be used to conduct research on the effect of noise caused by the quantum nature of X-ray radiation on the quality of identification of attenuating material, for example, by effective atomic number, in relation to the considered implementation of the dual energy method, as well as for the reasonable choice of parameters of the corresponding dual energy systems of digital radiography and X-ray computed tomography.
摘要 介绍了基于模拟辨别初始信号的双能量法计算实施中的辐射透射率数学模型。在双能量法的分析实施中，辐射透射的广义数学模型基于将 X 射线探测器的初始电信号按振幅模拟分离为低能量和高能量信号，然后对这些信号进行计数。X 射线探测器输出信号的模拟振幅分离是通过双通道振幅分析仪进行的。提出的模型考虑了 X 射线光子的最大能量、将信号分为低能和高能信号的能量阈值、辐射敏感探测器元件的材料和尺寸以及测试对象的参数。该模型可用于研究 X 射线辐射的量子性质对衰减材料（例如，按有效原子序数）识别质量的影响，与所考虑的双能量方法的实施有关，也可用于合理选择数字射线照相术和 X 射线计算机断层扫描的相应双能量系统的参数。
期刊介绍：
Russian Journal of Nondestructive Testing, a translation of Defectoskopiya, is a publication of the Russian Academy of Sciences. This publication offers current Russian research on the theory and technology of nondestructive testing of materials and components. It describes laboratory and industrial investigations of devices and instrumentation and provides reviews of new equipment developed for series manufacture. Articles cover all physical methods of nondestructive testing, including magnetic and electrical; ultrasonic; X-ray and Y-ray; capillary; liquid (color luminescence), and radio (for materials of low conductivity).
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