The process by which a beam of x-ray photons is reduced as it passes through matter is known as:

attenuation

Computed radiography uses what as its image receptor?

photostimulable phosphor plate

The chief controlling factor of radiographic contrast is:

kilovoltage peak (kVp)

What mAs value would result using the 500 mA setting at 0.25 second?

125 mAs

Which image receptor system does NOT use light during exposure?

direct capture

A radiograph is made using 40 mAs at a 40-inch SID. If the image must be repeated at a 72-inch SID, what mAs value is necessary to maintain the same exposure?

130 mAs

The 15% rule helps explain the effect of _______ on exposure.

kilovoltage peak (kVp)

Which of the following is NOT a radiographic contrast medium?

barium compounds

air

iodine compounds

water

water

The most common cause of radiographic unsharpness is:

motion

What term in digital imaging is used to describe a numeric representation of the quantity of exposure received by a digital image receptor?

exposure indicator