The beam limiter is the part that restrains and limits the X-ray. The size of the lead leaf in the beam limiter determines the size of the light field. The lead leaf is the protective layers of the x ray collimator. The lead leaf is made of lead. X-rays have a direct obstruction effect, and the lead leaves have no closed part to pass X-rays, which is controlling the dose of X-rays.
The beam limiter is a device that directly aligns the X-ray through the human body. Because the X-ray has radiation, the greater the dose, the greater the damage, so it can’t be arbitrarily scanned by the human body. In order to adjust the dose and output position of the X-ray, the beam limiter is installed. There are lights to simulate X-rays for positioning adjustment. These lamps are halogen lamps and LED lamps. Halogen lamps are early-use lamps that have been slowly replaced by LED lamps, which have become commonplace. Therefore, the LED light also belongs to the protective layers of the x ray collimator.
The protective layers of the x ray collimator is the part of the beam limiter that mainly controls the X-rays.