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How is the grid classified?

1. Convergence x ray grid: each lead strip is inclined to the focus, that is, the lead strip extension line is concentrated on the focus; (common)

2. Parallel grid: each lead strip is parallel to each other in a vertical plane;

3. Crossing grid: composed of two parallel grids, the lead strips are mutually 90°;

4, arc grating: from the center to the outward expansion of the equal radius of the overlapping, tile-like.

By material

JPI aluminum-based aluminum cover (common), aluminum-based carbon cover, carbon-based carbon cover, and Philips paper-based filter grid (high price, low cost performance)


The difference between the grid and the filter.

The filter is generally composed of a frame, a grid, a drive mechanism and a cassette tray.

The fixed filter has higher requirements on the grid density of the grid, generally above 40L/cm.


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