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What is the function of the beam limiter of x-ray machine?

The function of x ray collimator of the x-ray machine is to control X-ray. There are many types of beam limiter of X-ray machine, which can be used for 125 KV or 150 KV tube.
What is the function of the beam limiter of  x-ray machine
The beam limiter of the x-ray machine is an electromechanical optical device installed in front of the output window of the tube sleeve of the X-ray tube assembly. Its main function is to control the radiation field of the X-ray tube output ray, so as to minimize the projection range and avoid unnecessary dose, and to absorb some scattered rays to improve the image clarity on the premise of satisfying the X-ray imaging and diagnosis. In addition, it can indicate the projection center and the size of the projection field. Therefore, the beam limiter of the x-ray machine is an indispensable auxiliary equipment for X-ray projection and protection. The beam limiter of the x-ray machine is divided into manual beam limiter, electric beam limiter and automatic beam limiter.
What is the function of the beam limiter of  x-ray machine

Author:Abby