RADIATION PROTECTION TEST QUESTIONS AND ANSWERS GRADED A+ LATEST UPDATE.

1. 1. Biologic material irradiated under hypoxic conditions
is



(A) more sensitive than when irradiated under
oxygenated conditions



(B) less sensitive than when irradiated under
anoxic conditions


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, (C) less sensitive than when irradiated under
oxygenated conditions



(D) unaffected by the presence or absence o
oxygen ANS >>> (C) less sensitive than when
irradiated under oxygenated conditions



2. 2. According to the National Council on Radiation
Protection and Measurements (NCRP), the monthly
gestational dose-equivalent limit or embryo/ fetus
of a pregnant radiographer is



(A) 0.1 mSv



(B) 0.5 mSv



(C) 1.0 mSv



(D) 5.0 mSv ANS >>> (B) 0.5 mSv



3. 3. A time of 1.5 minutes is required for a particular
fluoroscopic examination, whose exposure rate is
275 mR/h. What is the approximate radiation
exposure for the radiologic staff present in the
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, fluoroscopy room during the examination?



(A) 183 mR



(B) 68.7 mR



(C) 18.33 mR



(D) 6.87 mR ANS >>> (D) 6.87 mR



4. 4. Stochastic/probabilistic effects of radiation are
those that



1. have a threshold



2. may be described as "all-or-nothing" effects




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, 3. are late effects



(A) 1 only



(B) 1 and 2 only



(C) 2 and 3 only



(D) 1, 2, and 3 ANS >>> C) 2 and 3 only



5. 5. What percentage of public exposure to ionizing
radiation is from medical sources?



(A) 5%



(B) 10%

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