Where is the X-ray grid

The X-ray grid is placed between the human body and the film (or flat panel detector). In other words, the X-ray grid is located directly behind the patient, installed inside the chest film box or in the film box under the photographic flat bed.
The focal length of the X-ray grid for the chest frame is 1.8 meters, and the focal length of the X-ray grid for the photographic flat bed is one meter. Some customers reported that the X-ray grid was not effective in filtering radiation, and the film was streaked. They informed that the distance between the X-ray grid and the X-ray machine was wrong, and that they needed to follow the instructions. The X-ray grid in the chest film box is one meter away from the X-ray machine, and the X-ray grid in the photographic flat bed box is one meter away from the X-ray machine.

Author：Lillian