Question

when using a radiographic unit with automatic exposure control (aec), which of the following can be employed to reduce patient motion while maintaining proper receptor exposure?
increase milliamperage (ma)
decrease kilovoltage peak (kvp)
increase back - up timer
decrease density setting

Explanation:

Increasing milliamperage (mA) shortens exposure time which helps reduce patient motion while maintaining proper receptor exposure in an AEC - equipped radiographic unit. Decreasing kVp reduces penetration and affects image quality without necessarily reducing motion. Increasing back - up timer doesn't reduce motion. Decreasing density setting doesn't directly address motion.

Answer:

Increase milliamperage (mA)