Institute of Electrophysics, Ural Branch, Russian Academy of Sciences, Yekaterinburg 620016, Russia.
Sensors (Basel). 2023 Apr 29;23(9):4393. doi: 10.3390/s23094393.
This paper presents the development of a method for dual-energy processing of X-ray images using pulsed X-ray sources for the contrast detection of beryl in muscovite mica in 2D X-ray and CT images. These substances have similar chemical properties and are difficult to differentiate when one is against the background of the other using methods based on X-ray absorption. In the experiments, we used three pulsed X-ray sources with different maximum voltages. We performed modeling of the emission spectra and selection of the necessary energy bands due to X-ray absorbing filters: a positive effect was shown for dual-energy image processing when the function of converting X-ray radiation into a signal using the VIVIX-V 2323D detector was taken into account. As a result, a pulsed X-ray source with the pulse voltage of 330 kV was chosen for the contrast detection of beryl, with the content of 5-7% against the background of muscovite and the thickness up to 70 mm. Using this source and the developed mathematical algorithms, it is possible to obtain a band of low-energy radiation at the level of 70-80 keV, as well as high-energy radiation in the range of 180 keV. Methods based on the X-ray absorption can become both additional and independent methods for studying and monitoring membranes; these objects range from tens of nanometers to several micrometers in size.
本文提出了一种使用脉冲 X 射线源对 X 射线图像进行双能处理的方法，用于在 2D X 射线和 CT 图像中对比检测绿柱石在白云母中的存在。这些物质具有相似的化学性质，当其中一种物质以另一种物质为背景时，使用基于 X 射线吸收的方法很难将它们区分开来。在实验中，我们使用了三个具有不同最大电压的脉冲 X 射线源。我们进行了发射光谱的建模，并选择了由于 X 射线吸收滤光片而需要的能带：当考虑到使用 VIVIX-V 2323D 探测器将 X 射线辐射转换为信号的功能时，双能图像处理显示出了积极的效果。结果，选择了脉冲电压为 330 kV 的脉冲 X 射线源用于绿柱石的对比检测，在白云母的背景下含量为 5-7%，厚度可达 70 毫米。使用这种源和开发的数学算法，可以获得 70-80 keV 能级的低能辐射带，以及 180 keV 范围内的高能辐射。基于 X 射线吸收的方法可以成为研究和监测膜的附加和独立方法；这些物体的尺寸从几十纳米到几微米不等。
