Why does the wire grid eliminate scattered rays?

The wire grid is made of lead foils (that is, thin lead strips with a thickness of 0.05~0.1mm) spaced at a certain distance (0.15~0.35 mm) and arranged in parallel or at a fixed inclination. The wire is filled and fixed with aluminum, paper or wood strips, and the two sides are supplemented with aluminum or synthetic resin protective layers. When photographing, the grid is placed between the film and the body, and the scattered rays cannot pass through the gap between the lead strips because they form an angle with the lead strips, so most of them are absorbed by the lead strips, thereby greatly reducing the scattered rays received on the film. , thereby improving the contrast of the image, improving the imaging quality of the X-ray film, and reducing the damage to the human body.
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Author：X Ray Grids Maker