The parameters of Newheek fixed x-ray grids.

There are three main parameters of the x-ray grid: first, the focal length refers to the vertical distance from the lead convergence line to the surface of the grate, expressed in F.

The grid ratio is the ratio of the height of lead bar to the gap of lead bar, expressed in R.

The gate density mainly refers to the number of lead bars per unit distance, expressed in N.

Common focal lengths are 100 cm, 110 cm, 150 cm, 180 cm, etc.

The commonly used grid ratios are 8:1, 10:1, 12:1, etc.

The commonly used gate density is 28L/cm and 44L/cm.

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Author：Yevette