Question

which of the following measurements are commonly used to describe the quality of the x - ray beam?
milligray (mgy)
coulombs per kilogram (c/kg)
milliampere seconds (mas)
kiloelectron volts (kev)

Explanation:

Kiloelectron - volts (keV) is a measure of the energy of the x - ray photons, which is related to the quality (penetrating power) of the x - ray beam. Milligray (mGy) is a unit of absorbed dose, coulombs per kilogram (C/kg) is a unit of exposure, and milliamperes - seconds (mAs) is related to the quantity of x - rays produced, not the quality.

Answer:

Kiloelectron volts (keV)