强激光与粒子束2013，Vol.25Issue(4)：1021-1025,5.DOI:10.3788/HPLPB20132504.1021
基于图像信噪比的X射线同轴相衬成像系统设计
Design for in-line phase contrast imaging system based on signal to noise ratio
摘要
Abstract
The optimized design method based on signal to noise ratio of the image is presented for the object of two-dimensional Gaussian distribution based on the theoretical analysis of the technology of X-ray in-line phase contrast imaging. The imaging systems under the radiation of sub-micrometer focus X-ray source, laser-based micrometer focus X-ray source and synchrotron radiation X-ray source are optimized by means of numerical simulation. The outcome shows that the method based on signal to noise ratio can increase the signal to noise ratio of the image and get more reasonable imaging distance premised by decreasing the contrast slightly when compared with the contrast method.关键词
X射线/同轴相衬/二维高斯分布/信噪比/优化设计Key words
X-ray/ in-line phase contrast/ two-dimensional Gaussian distribution: signal to noise ratio/ optimized design分类
数理科学引用本文复制引用
曹宇东..基于图像信噪比的X射线同轴相衬成像系统设计[J].强激光与粒子束,2013,25(4):1021-1025,5.基金项目
国防科技基础研究基金项目 （）
