Main knowledge of the x ray grid

The grid is a filter used to filter out the effects of scattered rays on the film.

Used to filter out the effects of scattered rays on film

It should be placed between the human body and the film, and most of the scattered rays can be filtered out, and only a small part of the scattered lines leak.

classification:

According to the structure:

1 convergence grid: each lead strip is inclined to the focus, that is, the lead strip extension line is concentrated in the focus

2 parallel grid: each lead strip is parallel to each other in the vertical plane

3 cross grid: composed of two parallel grids, the lead strips are 90° apart

4 arc grid: from the center to the outward expansion of the same radius, tile-like

According to the material:

1 commonly used grids: internal spacers are composed of non-metallic materials, such as wood chips, paper sheets, plastics and other non-metallic low-density materials;

2 full metal grid: the internal spacer is metal material: aluminum sheet. Its high strength and good moisture resistance;

Author：Alina