What is the grid?

The term filter grid is not unfamiliar to everyone. So what is the filter grid in the end, or what role does the grid play?

The main function of the grid is to filter out the scattered lines. The scattered rays are caused by a special effect of a part of the X-rays passing through the human body, so that the original X-rays change the direction of propagation, and the rays having different propagation directions are called scattered lines.

Author：Alina