How to choose a suitable x ray grid? Points to note:

1. Size: models ranging from 8*10 to 17*17, choose according to specific needs

2. x ray grid density: The x ray grid density is the number of x ray grids formed by lead bars and their spacing per unit length. The gate density is also called the strip frequency. If the x ray grid ratio is the same, the scattering line with a large x ray grid density will be eliminated efficiently; if the x ray grid density is the same, the elimination effect will be better if the x ray grid ratio is large. x ray grid density is a very important indicator. In special circumstances, high-density x ray grids are required, which can be selected according to the specific needs of customers.

3. x ray grid ratio: the ratio of the height of the lead x ray grid bar to the width of the gap, from 3:1 to 15:1, 8:1, 10:1 and 12:1 are commonly used

4. Focal length: from standard short focal length (26′- 32′) focal length (34′- 44′) to far focal length (40′- 72′, 48′- 72′- 60′- 72′) to infinity (parallel line). The commonly used focal lengths are 1m, 1.3m, 1.5m and 1.8m, which can be selected according to the chest radiograph or other parts.

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Author：肖恩