CAMRT High Yield Exam Questions and
Answers with Verified Solutions | Latest
Updated 2026
What does ALARA stand for? As Low As Reasonably Achievable.
What are the three principles of Time, distance, shielding.
radiation protection?
What exposure factor primarily kVp.
controls beam penetration?
What exposure factor primarily mAs.
controls the quantity of radiation?
What happens to patient dose Dose increases.
when
mAs increases?
What happens to image contrast Contrast decreases.
when kVp increases?
What type of interaction produces Compton scatter.
most scatter radiation?
, What interaction contributes most Photoelectric effect.
to
image contrast?
What is the inverse square law? Radiation intensity decreases with the
square of
distance.
What happens to exposure if Exposure decreases to one quarter.
distance doubles?
What device is used to reduce Grid.
scatter reaching the detector?
What happens to patient dose Dose increases.
when
a grid is used?
What is collimation? Restriction of the x-ray beam to the area of
interest.
Why is collimation important? Reduces scatter and patient dose.
What is beam filtration? Removal of low-energy photons from the
beam.
Why is filtration used? To reduce patient dose.
What is the most common target Tungsten.
material in x-ray tubes?
Answers with Verified Solutions | Latest
Updated 2026
What does ALARA stand for? As Low As Reasonably Achievable.
What are the three principles of Time, distance, shielding.
radiation protection?
What exposure factor primarily kVp.
controls beam penetration?
What exposure factor primarily mAs.
controls the quantity of radiation?
What happens to patient dose Dose increases.
when
mAs increases?
What happens to image contrast Contrast decreases.
when kVp increases?
What type of interaction produces Compton scatter.
most scatter radiation?
, What interaction contributes most Photoelectric effect.
to
image contrast?
What is the inverse square law? Radiation intensity decreases with the
square of
distance.
What happens to exposure if Exposure decreases to one quarter.
distance doubles?
What device is used to reduce Grid.
scatter reaching the detector?
What happens to patient dose Dose increases.
when
a grid is used?
What is collimation? Restriction of the x-ray beam to the area of
interest.
Why is collimation important? Reduces scatter and patient dose.
What is beam filtration? Removal of low-energy photons from the
beam.
Why is filtration used? To reduce patient dose.
What is the most common target Tungsten.
material in x-ray tubes?
