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Do you know the x-ray grid?

What kind of device is the xray grid? Do you know the xray grid?
From the appearance of the xray grid, the filter grids are generally a black flat plate with a thickness of 4 to 8 mm. The inner structure of the xray grid is formed by intersecting thin lead bars. Fill and locate the two lead bars with Xray material and glue them together.
So how to judge the standard of the xray grid ? Among them, the exposure coefficient of the xray grid is a standard to measure the xray grid.
Exposure coefficient B means the ratio of exposure required to obtain the same density value when the filter grating is not used and when the xray grid is used.
Generally speaking, the B value is between 2 and 6. When the performance of the xray grid is the same, the smaller the B value of the filter grating is, the better.
Use of xray grid: In Xray photography, the xray grid are usually used when the limb thickness is more than 15 cm.

Author:Alina


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