Question 1

A radiation safety officer in a health care facility must have sufficient authority,organizational freedom,and management prerogative to:
1)identify radiation safety problems.
2)initiate,recommend,or provide corrective action.
3)stop unsafe operations involving by-product material.
4)verify implementation of corrective actions.

Accepted Answer

A)   1, 2, and 3 only
B)   1, 3, and 4 only
C)   2, 3, and 4 only
D)   1, 2, 3, and 4 D

Question 2

The essential concept underlying radiation protection is that:

Accepted Answer

A)   any organ in the human body is vulnerable to damage from exposure to ionizing radiation.
B)   only critical organs in the human body are vulnerable to damage from exposure to ionizing radiation.
C)   only the reproductive organs in male and female humans are vulnerable to damage from exposure to ionizing radiation.
D)   no organ in the human body is vulnerable to damage from exposure to ionizing radiation. A

Question 3

Which of the following are functions and/or responsibilities of the United States Occupational Safety and Health Administration (OSHA)?
1)Functions as a monitoring agency in places of employment,predominantly in industry
2)Regulates occupational exposure to radiation through Part 1910 of Title 29 of the U.S.Code of Federal Regulations (29 CFR 1910)
3)Responsible for regulations concerning the "right to know" of employees with regard to hazards that may be present in the workplace

Accepted Answer

A)   1 and 2 only
B)   1 and 3 only
C)   2 and 3 only
D)   1, 2, and 3 D

Question 4

Determine the cumulative effective dose (CumEfD) to the whole body of an occupationally exposed person who is 34 years old.

Accepted Answer

A)   3400 mSv
B)   340 mSv
C)   34 mSv
D)   3.4 mSv

Question 5

When whole-body occupational exposure is controlled by keeping the effective dose (EfD) well below the upper boundary limit,the possibility of inducing stochastic effects of radiation is:

Accepted Answer

A)   increased considerably.
B)   increased slightly.
C)   maintained at an acceptable level.
D)   minimized.

Question 6

The ALARA concept presents an extremely conservative model with respect to the relationship between:

Accepted Answer

A)   health care education and radiation research.
B)   ionizing and nonionizing radiation.
C)   ionizing radiation and potential risk.
D)   radiation dose and biologic response.

Question 7

The annual occupational effective dose (EfD) limit does not include:
1)personal medical radiation exposure from an imaging procedure.
2)natural background radiation exposure.
3)radiation exposure received on the job.

Accepted Answer

A)   1 and 2 only
B)   1 and 3 only
C)   2 and 3 only
D)   1, 2, and 3

Question 8

To define ALARA,health care facilities usually adopt investigation levels,defined as Level I and Level II.In the United States,these levels are traditionally _______ to ______ the applicable regulatory standards.

Accepted Answer

A)   one twentieth, one tenth
B)   one tenth, three tenths
C)   three tenths, one half
D)   one half, seven tenths

Question 9

Which of the following are responsibilities of a health care facility's radiation safety committee (RSC)?
1)Assist in the development of the radiation safety program
2)Provide guidance for the radiation safety program
3)Facilitate the ongoing operation of the radiation safety program

Accepted Answer

A)   1 and 2 only
B)   1 and 3 only
C)   2 and 3 only
D)   1, 2, and 3

Question 10

Determine the cumulative effective dose (CumEfD) limit to the whole body of an occupationally exposed person who is 46 years old.

Accepted Answer

A)   4.6 mSv
B)   46 mSv
C)   460 mSv
D)   4600 mSv

Question 11

Which of the following statements is true?

Accepted Answer

A)   Medical imaging personnel almost always receive equivalent doses that are close to the annual effective dose limit.
B)   Medical imaging personnel always receive equivalent doses that are close to the annual effective dose limit.
C)   Medical imaging personnel almost never receive equivalent doses that are close to the annual effective dose limit.
D)   Medical imaging personnel absolutely never receive equivalent doses that are close to the annual effective dose limit.

Question 12

Occasional exposure for the purpose of education and training is permitted,provided that special care is taken to ensure that the annual effective dose limit of ____________ is not exceeded.

Accepted Answer

A)   0.5 mSv
B)   1 mSv
C)   2 mSv
D)   3 mSv

Question 13

Determine the cumulative effective dose (CumEfD) limit to the whole body of an occupationally exposed person who is 52 years old.

Accepted Answer

A)   5.2 mSv
B)   52 mSv
C)   520 mSv
D)   5200 mSv

Question 14

The main function of the Nuclear Regulatory Commission (NRC) is to:
1)inspect imaging facilities.
2)oversee the nuclear energy industry.
3)regulate imaging facilities.

Accepted Answer

A)   1 only
B)   2 only
C)   3 only
D)   1, 2, and 3

Question 15

Which of the following agencies was previously known as the Atomic Energy Commission?

Accepted Answer

A)   FDA
B)   ICRP
C)   NCRP
D)   NRC

Question 16

Epidemiologic studies of atomic bomb survivors exposed in utero have provided conclusive evidence of a dose-dependent increase in the incidence of severe mental retardation for fetal doses greater than approximately:

Accepted Answer

A)   0.1 Sv.
B)   0.2 Sv.
C)   0.3 Sv.
D)   0.4 Sv.

Question 17

Damage to the reproductive cells of male and female humans that is caused by irradiation of sperm and ova before conception is termed:

Accepted Answer

A)   mutagenesis.
B)   optimization.
C)   spermaovagenesis.
D)   teratogenesis.

Question 18

The responsibility for maintaining radiation monitoring records for all personnel and for providing counseling for individuals who receive monitor readings in excess of allowable limits belongs to the:

Accepted Answer

A)   director of human resources of a health care facility.
B)   designated radiation safety officer of a health care facility.
C)   hospital administrator.
D)   radiologic technologist in charge of quality control.

Question 19

Which of the following terms means "random in nature"?

Accepted Answer

A)   Deterministic
B)   Epidemiologic
C)   Nonstochastic
D)   Stochastic

Question 20

In general,deterministic effects typically occur:

Accepted Answer

A)   after all diagnostic imaging procedures.
B)   only after some diagnostic imaging procedures.
C)   only after routine fluoroscopic procedures.
D)   only after large doses of radiation are received.

Exam 10: Dose Limits for Exposure to Ionizing Radiation