Exam 10: Dose Limits for Exposure to Ionizing Radiation

Working in conjunction with their partners in other agencies,the FDA intends to take action to 1)promote safe use of medical imaging devices. 2)support informed clinical decision. 3)increase patient awareness.

Revised concepts of radiation exposure and risk have brought about more recent changes in NCRP recommendations for limits on exposure to ionizing radiation.Because many conflicting views exist on assessing the risk of cancer induction from low-level radiation exposure,the trend has been to

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

The effective dose (EfD)limiting system supersedes

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.

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

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 an employee's "right to know" with regard to hazards in the workplace

Which of the following statements is true?

If a certain dose of radiation produces a skin burn,a higher dose of radiation will cause the skin burn to be more severe;however,a dose below the threshold level for skin burn will

The essential concept underlying radiation protection is that

Upper boundary radiation exposure limits for occupationally exposed persons are associated with risks that are similar to those encountered by employees in other industries that are generally considered to be reasonably safe.These industries include 1)manufacturing. 2)trade. 3)government.

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

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.

The effective dose (EfD)limit for the lens of the eye is

To provide a low-exposure cut-off level so that regulatory agencies may consider a level of effective dose as being of negligible risk,an annual negligible individual dose (NID)of ________________ per source or practice has been set.

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

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

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

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 for persons under the age of 18 years.

The cumulative effective dose (CumEfD)limit does not include 1)exposure acquired as a consequence of a radiation worker undergoing medical imaging procedures. 2)radiation exposure from natural background radiation. 3)radiation exposure received while radiographers perform imaging procedures on patients.