When using AEC, how can a radiographer increase the exposure of a previous radiograph?

Increasing the density control is a method that can effectively enhance the exposure of a radiograph when using Automatic Exposure Control (AEC). The density control feature on an AEC system adjusts the sensitivity of the exposure termination. When this control is increased, the AEC allows for a longer exposure time or greater sensitivity to radiation, resulting in a darker image on the radiograph. Essentially, this adjustment changes how the system interprets the exposure levels needed to create a proper image density.

Altering the film type pertains to changing the characteristics of the radiographic film itself, which may influence contrast but does not directly impact the exposure settings used during acquisition. Decreasing time would result in a shorter exposure, potentially resulting in an underexposed image. Modifying kVp influences the penetrating power of the X-rays but is not directly linked to AEC settings for adjusting image density. Each of these alternatives does not specifically address increasing the exposure as effectively as adjusting the density control on the AEC system does.