What are the special requirements for the use and placement of the x ray grid

There are certain regulations for the use and placement of the x ray grid, so why must the x ray grid be placed and used according to the regulations?
When placing the wire x ray grid, pay attention to the focus surface facing the X-ray generation direction, and place it in the incident direction of the human body and the X-ray. In order to make the original emission line pass through the wire x ray grid to the greatest extent, the X-ray centerline during exposure It can be tilted to the direction of the lead bar and cannot deviate from the center line of the x ray grid, so that the X-ray radiation direction and the direction of the lead bar can be on the same horizontal line to pass the original emission line to the greatest extent, and because the directions of the scattered rays are different and messy Therefore, the scattered rays can be well absorbed and the image quality can be improved. Therefore, the concept of photography is moved here. The x ray grid has the phenomenon of absorbing the original emission line called the cutting effect. In summary, the reason for the cutting effect is the placement of the x ray grid and the tilt angle of the reverse. All may lead to such reasons as the X-ray focus and the convergence line do not coincide.
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Author：肖恩