Which configuration best describes the process when using AEC to minimize patient motion?

When using Automatic Exposure Control (AEC) to minimize patient motion, utilizing shorter exposure times is vital. AEC systems are designed to automatically terminate the exposure once the required radiation has been detected by the sensors. By reducing the exposure time, you can effectively lessen the duration that the patient is subject to radiation, which is particularly helpful in preventing motion artifacts.

Shorter exposure times decrease the likelihood of movement, as there is less time for the patient to shift or breathe, resulting in clearer images. Moreover, this approach is crucial in various clinical situations, especially with patients who have difficulty staying still, such as young children or those in pain.

The other options, while relevant to different aspects of radiographic techniques, do not directly address the goal of minimizing motion. Increasing kilovoltage peak affects the penetration of the x-ray beam but does not influence exposure time. Adjusting grid frequency pertains to improving image quality and reducing scatter, but it does not directly correlate to patient motion. Modifying film density is more related to image contrast and exposure quality rather than minimizing the time a patient remains still during imaging.