What is the function of a collimator in radiographic testing?

The function of a collimator in radiographic testing is to narrow the beam of radiation. This device is designed to limit the size and shape of the x-ray beam that reaches the film or detector, ensuring that only the area of interest is exposed to radiation. By controlling the beam's dimensions, a collimator helps improve image quality by reducing scatter radiation, which can compromise the clarity and contrast of the radiographic image. Additionally, it contributes to radiation safety by minimizing unnecessary exposure to surrounding tissues and personnel. Proper collimation is essential in achieving accurate and diagnostic radiographs while adhering to safety protocols.