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201 final

FINAL REVIEW

QuestionAnswer
When time in a high radiation area is reduced, what happens to occupational exposure? It is reduced.
Secondary radiation includes what? Leakage radiation and scatter radiation.
What represents the radiation output over time during the week? Workload.
Lifetime effective dose should not exceed what? The occupationally exposed person’s age in years.
What factors are considered in radiation shielding design? Energy of x-rays, barrier type, workload, use factor, and occupancy factor.
Minimum lead equivalent for protective eyeglasses? 0.35 mm.
What should happen to scattered radiation behind the control booth barrier? It should not have enough energy to reach behind the barrier
Maximum weekly dose for a controlled area? 1 mSv.
When should a radiographer always wear a thyroid shield? During fluoroscopy and special procedures.
Annual dose limit for the general public (frequent vs infrequent)? 1 mSv; 5 mSv.
What happens when a radiologic technologist declares pregnancy? She continues working with proper radiation safety practices.
What parts of the x-ray unit should not be touched during exposure? Tube housing, collimator, and high-tension cables
Which procedures give the highest occupational exposure? Fluoroscopy, mobile radiography, and special procedures.
Another term for use factor? Beam direction factor.
What technique reduces scatter radiation? Decrease kVp and increase mAs.
Created by: edwingp
 

 



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