The x ray grid is used to filter out the influence of scattered rays

The x ray grid should be placed between the human body and the film, most of the scattered rays can be filtered out, and only a small part of the scattered rays can be leaked.

classification:

1 Commonly used grid: The internal spacer is made of non-metallic materials, such as wood chips, paper, plastics and other non-metallic low-density materials;

2 All-metal grid: The internal spacer is made of metal material: aluminum sheet. It has high strength and good moisture resistance;

structure:

The appearance of the grid is a flat plate with a thickness of 4-8mm. The internal structure is formed by intersecting many thin lead strips. The two lead strips are filled and positioned with a material that is easily X-ray transparent, and glued together. The filler can be wood, paper or aluminum sheet. Finally, the top and bottom are packaged with thin aluminum plates to form a grid plate. Seen from the cross section, the arrangement direction of the lead strips of the filter plate will gather to one point. From the entire grid, there is a convergence line.

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Author：肖恩