The X-ray grid is a device that passes the original emission line and filters out scattered rays to improve the image quality. Among them, the definitions of the original emission line and the secondary ray are the original emission line and the primary ray and the ray emitted from the X-ray tube. The scattered rays and the secondary ray and the original emission line enter the human body and have a special effect on the human tissue. The generated rays are longer than the original emission line and the radiation direction is scattered and irregular.
The main function of the X-ray grid is to filter out scattered rays. Scattered rays are due to a special effect that occurs when a part of the X-rays pass through the human body, causing the original X-rays to change the direction of propagation and form rays with different directions of propagation called scattered rays.
There are many types of X-ray grids. According to their structure, materials, and movement methods, they can be divided into the following categories. According to its structure, it can be divided into three types: convergence grid, parallel grid and cross grid. According to its material classification, it can be divided into metal and non-metal, and according to its movement method, it can be divided into fixed type and movable type.
The X-ray filter grid should be regulated when it is used, otherwise it will not play the role of filtering scattered rays, and will not achieve the purpose of use. The X-ray grid is divided into two sides, the front side is the focusing plane. The focusing plane and the focal plane are literally the side facing the focus of the X-ray tube, that is, the side with the convergence line.
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