The resolution and resolution ratio in CR testing

There are many terms related to resolution and resolution ratio in current CR testing standards, such as resolution, resolution ratio, image resolution ratio, system resolution ratio and scanning resolution ratio, which are easy to cause confusion and misunderstanding. This paper intends to clarify the internal relationship and difference between them through theoretical analysis, experiments and practical application, so as to provide some help for the theoretical study of digital ray practitioners and the application of CR testing technology.