What is a collimator’s function in radiographic equipment?

A collimator's function in radiographic equipment is to narrow the beam of radiation, which helps ensure that only the targeted area is exposed during the imaging process. By limiting the spread of radiation, the collimator reduces unnecessary exposure to surrounding tissues and environments. This control over the radiation beam not only minimizes the potential radiation dose to individuals who may be near the imaging site but also improves the quality of the radiographic image by reducing scatter that can degrade image clarity.

The other options, while related to aspects of radiography, do not accurately describe the primary role of the collimator. Enhancing image resolution pertains more to the quality of the imaging system and the processing techniques rather than the function of the collimator itself. Providing a digital readout of radiation levels is related to monitoring equipment rather than the collimator's role in beam shaping, and cooling the radiographic film is not a function of the collimator, which focuses specifically on beam management rather than temperature control or film handling.