X线成像设备低对比度分辨力分析及讨论

Analysis and Discussion of Low Contrast Resolution of X-Ray Imaging Equipment

本文对X线成像设备的重要指标—低对比度分辨率作了介绍。首先阐述了低对比分辨率的定义以及影响因素,然后介绍了国内外测试X线成像设备的低对比分辨率的四种方法,对其测试原理、装置、以及评价方法作了说明。最后在讨论中对在这四种方法中存在的问题作了简单的说明,对新的测试工具的设计提出了设计思路。

This article introduces the Low Contrast Resolution which is an important parameter of X-ray imaging equipment. The article begins with the Low Contrast Resolution＇s definition and influence factors. Four methods of testing X-ray imaging equipment＇s Low Contrast Resolution in china and overseas are introduced, which include testing principle, device and evaluation. In discussion the article shows＇the problems of the methods, and the way of new testing tool design.