Why do X-ray machines need to be paired with a filming bed?

Under what circumstances do we need to pair it with a xray filming bed?
Generally on X-ray, the patient can stand or lie down. In the case of lying down, it is necessary to match the appropriate filming bed for filming.
The core requirement of a good filming bed is to be able to better penetrate the rays and have less impact on photography. It can reduce the amount of rays and ensure the clarity of photography.
It also needs to be able to move easily, including the movement of the bed surface and the movement of the entire bed. Facilitate the shooting of different scenes and locations.

Author:Newheek-Table