The cutting effect of the x ray grid is the additional absorption of the lead bar of the x ray grid to the X-ray with the information signal.
When the X-ray tube focuses on the center of the x ray grid, the distance between the X-ray tube focus and the grating plane is called the distance between the X-ray tube focus and the grating plane when the X-ray tube focus is above the focus line (or point). When the X-ray tube focus is below the focus line (or point), the distance between the X-ray tube focus and the grating plane will also be produced. It is called near grating focal distance. If the deviation distance is the same, the loss rate of the original ray caused by the cutting effect of the near focal distance is greater than that of the far focal distance.
Author：X Ray Grids Maker
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