Week 10- Dose Limits for Exposure to ionizing radiation

Question 1

Why must radiation exposure to the general public, patient and works be limited?

Answer 1

To minimize the risk of harmful biologic effects

Question 2

What types of limits have been developed for radiation safety purposes?

Answer 2

Occupational and non-occupational EfD and EqD limits

Question 3

What do the occupational and non-occupation EfD and EqD apply to?

Answer 3

Tissues and organs such as the lens of the eye, skin, hands and feet

Question 4

What has an Efd limiting system been incorporated into?

Answer 4

Title 10 of the Code of Federal Regulations, Part 20

Question 5

What are included in the code of federal regulation documents?

Answer 5

The rules and regulations of the Nuclear Regulatory Commission (NRC)

Question 6

What are the most recent resources for radiation protection recommendations?

Answer 6

NCRP Report #116 and #184 and ICRP report #60

Question 7

Why must radiographers know about EfD limiting systems?

Answer 7

Must be familiar with previous, existing and new guidelines for safety

Question 8

Why is important that radiologists know this information?

Answer 8

• they share the responsibility for patient safety and are subject to exposure when performing their duties

Question 9

How do Radiographers obtain the required knowledge on radiation safety?

Answer 9

By becoming familiar with the functions and recommendations of the various advisory groups and regulatory agencies

Question 10

What are the 4 major organizations responsible for evaluating the relationship between radiation EqD and induced biological effects?

Answer 10

• ICRP (international commission on radiological protection)
• NCRP (national council on radiation protection and measurements
• UNSCEAR (united nations scientific committee on the effects of atomic radiation
• NAS/NRC-BEIR (National academy of Science/ National research council)

Question 11

What are these organizations concerned with formulating?

Answer 11

Risk estimates of somatic and genetic effects or irradiation

Question 12

What is the ICRP?

Answer 12

The leading international organization that publishes a safe use of ionizing radiation

Question 13

What is the ICRP composed of?

Answer 13

Main commission, chairman and four standing committees

Question 14

What is the function of the ICRP?

Answer 14

Evaluates information on biological effects of radiation and provides rad protection guidance through general recommendations and public/occupational dose limits