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 radiation safety officer in a health care facility should have the authority and organizational freedom to identify radiation safety issues, initiate corrective actions, stop unsafe operations involving by-product material, and verify the effective implementation of corrective actions. Therefore, options 1, 2, 3, and 4 must be met by the radiation safety officer.

Question 2

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

Accepted Answer

The question does not provide any information about the occupational exposure of the person or the type of radiation exposure. Therefore, it is impossible to determine the cumulative effective dose to the whole body simply based on the person's age. However, the options provided suggest that the answer is likely to be in the range of a few millisieverts (mSv) to a few thousand millisieverts (mSv). Based on the available options, the most reasonable and likely answer is B, which is 340 mSv.

Question 3

Effective dose (EfD) limits may be expressed for:
1)whole-body exposure.
2)partial-body exposure.
3)exposure of individual organs.

Accepted Answer

Effective dose (EfD) limits can be expressed for all three options: whole-body exposure, partial-body exposure and exposure of individual organs. The concept of EfD is used to estimate the risk of stochastic effects, such as cancer, from exposure to ionizing radiation. The EfD limits are expressed in terms of the unit sievert (Sv), and are used to guide radiation protection practices for occupational and public exposures.

Question 4

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

Level I investigation is typically set at one-tenth of the applicable regulatory standard, while Level II investigation is set at three-tenths of the standard. Therefore, option B is the correct answer as it matches the given range for investigation levels.

Question 5

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

Mutagenesis refers to changes in the genetic material of reproductive cells, such as sperm and ova, often caused by irradiation or other mutagens, which can lead to mutations.

Quiz 10: Dose Limits for Exposure to Ionizing Radiation

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

Effective dose (EfD) limits may be expressed for: 1) whole-body exposure. 2) partial-body exposure. 3) exposure of individual organs.

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.

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