How is the active X-ray grid structure divided

How is the active X-ray grid structure divided?
The X-ray grid is divided into metal and non-metal according to the material. For non-metallic X-ray grids, the content of the space between the grids is non-metallic, such as plastics, paper, etc., and its moisture resistance is weak. Moisture prevention measures must be taken. The metal X-ray grid is filled with metal, such as aluminum, and has a strong moisture resistance.
The X-ray grid is divided into fixed and mobile types according to the movement mode: the fixed X-ray grid has high requirements on the grid density, because the grid density of the grid density is too low, it is easy to cause lead shadow and thus affect image. Therefore, fixed X-ray grids generally use high grid density. The movable X-ray grid can also be called a filter device. It consists of a grid, a driving device, and a tray. The driving device causes the X-ray grid to start aligning with the lead bar before exposure. The movement in the vertical direction until the exposure is completed can stop the lead strip shadow, so the movable X-ray grid does not require high grid density, and the low-density X-ray grid can be used to filter Wire grid use.
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Author：X Ray Grids Maker