ARRT Registry Exam Review Questions and Correct Answers

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ARRT Registry Exam Review Questions and
Correct Answers
Where do the electrons that travel across the tube come from?
Ans: — Thermionic Emission
How are the electrons accelerated across the tube? Ans: — High
Voltage
In what direction do electrons flow across the tube? Ans: —
Cathode to Anode (Spinning)
How are electrons focused in the tube? Ans: — With focusing Cups
What happens when electrons are decelerated? Ans: — They give
off Photons
How are electrons slowed down in the tube prior to emission of
photons? Ans: — The curve a tungsten nucleus. Bremsstrahlung
Interactions
What does Frequency determine in xray photons? Ans: — Energy
What are too early somatic effects of ionizing radiation? What is
the dose required for this? Ans: — 2 Sv
redness
hair loss
What are some late somatic effects of ionizing radiation exposure?
What dosage does occur at? Ans: — 5 Sv
cancer
cataracts
What is the difference between threshold and non-threshold? Ans:
— Threshold equals specific dose
non-threshold equals chance
What is linear energy transfer?


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