C10: Review Questions Flashcards
Which of the following agencies is responsible for enforcing radiation safety standards?
NRC
Determine the cumulative effective dose (CumEfD) to the whole body of an occupationally exposed person who is 27 years old.
270 mSv
Biologic effects such as cataracts that result from exposure to ionizing radiation appear to have which of the following?
sigmoid threshold dose-response curve
For radiation workers, such as medical imaging personnel, occupational risk may be equated with occupational risk in which of the following?
other industries that are generally considered reasonably safe
Revised estimates derived from more recent reevaluations of dosimetric studies on the atomic bomb survivors of Hiroshima and Nagasaki indicate which of the following?
an increase in the number of solid tumors in the survivor population
When exposed to radiation as part of their educational experience, 18-year-old students should not exceed an effective dose limit of _____ annually.
1 mSv
Which of the following groups has provided sufficient evidence of the induction of stochastic effects in humans resulting from high radiation absorbed doses?
Japanese atomic bomb survivors
Responsibilities of a medical facility’s radiation safety officer (RSO) include which of the following?
1. developing an appropriate radiation safety program
2. maintaining radiation-monitoring records for all personnel
3. repairing all broken or defective imaging equipment
1 and 2 only
To reduce exposure for pregnant imaging professionals and to control the exposure of the unborn during potentially sensitive periods of gestation, the NCRP now recommends a monthly equivalent dose limit not exceeding _____ per month the embryo-fetus and a limit during the entire pregnancy not to exceed _____ after declaration of a pregnancy.
0.5 mSv, 5.0 mSv
Which of the following is the annual occupational effective dose that applies to radiographers during routine operations?
50 mSv
