What is the function of the collimator

The collimator is also called a beam light device. The collimator is a precision optical instrument for high-precision angle measurement. It is a device installed in front of the output window of the “tube”. Its main function is to control the irradiation field of the output line of the X-ray tube, so as to reduce the projection range as much as possible under the premise of satisfying X-ray imaging and diagnosis Unnecessary dose; and can absorb some scattered rays, improve the impact of clarity. In addition, it can indicate the projection center and the size of the projection field. Therefore, the beamer is an indispensable auxiliary equipment for X-ray projection and protection.
Manual beamers are usually used on DR X-ray machines and film diagnostic machines, that is, static filming.
– Electric beam limiter, which is mostly used in fluoroscopy, is convenient for remote control, and is an essential component for remote control of gastrointestinal beds.
– Automatic beam limiter, there is little difference in structure between automatic beam limiter and electric beam limiter. The difference is that there is a state detection device for lead leaves inside the automatic beam limiter. In terms of function, with the change of focal to screen distance, the automatic beam limiter has the ability to automatically maintain the size of its irradiation field, and is mostly used for perspective.
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Author:X Ray Collimator