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