摘要
研究了康普顿散射在X射线成像系统中的干扰机理,以及如何减少散射并对X射线成像进行优化。文章对检测系统中微通道板(MCP)准直器进行仿真模拟,分析了其如何抑制X光的散射,探求了X光强度和MCP长径比对的散射影响。在优化成像方面,研究了在X光焦点尺寸以及焦距确定的情况下,通过准直器获得最好的图像,以便于在便携式成像设备中可以获得更好的成像质量。使用Matlab软件进行模拟仿真,用蒙特卡洛方法对不同情况下的X光成像进行模拟,分析了在使用准直器时的光子的分布以及散射情况,得出适合便携式X射线成像检测系统所使用的准直器。
Aiming at the interference of Compton scattering on the imaging effect in the X-ray imaging system,the microchannel plate(MCP)collimator in the detection system was simulated,and its suppression effect on X-ray scattering and its X-ray intensity were analyzed And MCP aspect ratio.Seek how to obtain the best image through a collimator with the X-ray focus size and focal length determined,so that better imaging quality can be obtained in a portable imaging device.This article uses Matlab software for simulation.The main method of thinking is Monte Carlo method.It simulates X-ray imaging in different situations.It analyzes the distribution of photons and its scattering when using a collimator.Collimator used in X-ray imaging inspection system.
作者
徐润泽
秦旭磊
李野
XU Run-ze;QIN Xu-lei;LI Ye(School of Science,Changchun University of Science and Technology,Changchun 130022)
出处
《长春理工大学学报（自然科学版）》
2020年第6期36-41,共6页
Journal of Changchun University of Science and Technology(Natural Science Edition)
基金
吉林省科技计划重点项目(20180201034GX)
长春市科技计划项目(17DY029)。
