What is the function of a collimator in radiographic imaging?

The function of a collimator in radiographic imaging is primarily to limit the size and shape of the X-ray beam. By constricting the beam, the collimator minimizes unnecessary radiation exposure to the patient and helps target the area of interest more precisely. This not only reduces the radiation dose but also contributes to improved image quality by preventing scatter radiation from affecting the final image. Additionally, by controlling the dimensions of the X-ray beam, collimators assist in maintaining the integrity of the diagnostic information captured, ensuring that only the relevant anatomical structures are visualized. Overall, collimators play a crucial role in enhancing the safety and effectiveness of radiographic examinations.