关键词: 数字射线成像, 空间分辨率增强, 数学模型, 点扩展函数, 散射抑制

Abstract:

Imaging spatial resolution is the important qualification of industry X-ray DR(digital radiography) system. The mathematical model is described through analyzing the physical process of DR, and then the main factors which effect imaging spatial resolution are analyzed and presented according to the mathematical analysis and the physical analysis and the corresponding methods to improve the imaging spatial resolution are put forward. The PSF(point spread function) model is established, and the best magnification ratio of the projection is got according to this PSF model.

Key words: digital , radiography,  , spatial , resolution , enhancement,  , mathematical , model,  , point , spread , function,  , scatter , suppression