The focal plane of the X-ray grid is placed in the X-ray direction

When placing the X-ray grid, pay attention to placing the focus surface of the X-ray grid in the X-ray direction, and place it in the direction of the human body and the X-ray, so that the original emission line can pass through the maximum amount of X-ray filter. During the exposure process, the X-ray center line can be tilted toward the lead bar, and will not deviate from the center line of the X-ray grid, so that the X-ray radiation direction and the direction of the lead bar on the same horizontal line can be the same. To a certain extent, it passes through the original emission line, and because the direction of the scattered light is different and disordered, the scattered light can be well absorbed to improve image quality. Therefore, photography is out of concept here. The phenomenon that the X-ray grid absorbs the original emission line is called the cutting effect. In short, the reason for the cutting effect is the position of the X-ray grid. The angle of the reverse tilt may cause it to happen, and the X-ray focus is not consistent with the convergence line.

There are two types of X-ray grids, mobile X-ray grids and fixed X-ray grids. The fixed X-ray grid can be directly used for X-ray photography. When in use, the X-ray grid can be placed between the human body and the film box to achieve the purpose of filtering and eliminating scattered rays.

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Author：肖恩