Key Terms Principles Of Rad Imaging (Chapter 9)

Front 1

NCRP

Back 1

National Council on Radiation Protection and Measurements (NCRP)
Advisory Group

Front 2

NRC

Back 2

Nuclear Regulatory Commission (NRC)
Regulatory Agency

Front 3

FDA

Back 3

Food and Drug Administration (FDA)
Regulatory Agency

Front 4

Stochastic Effects

Back 4

Those which no threshold dose of radiation exists, cancer genetic effects, they are random in nature. Reguardless of dose some will experience effect.

Front 5

Deterministic Effects (Non-stochastic)

Back 5

Those which a threshold dose is assumed, cataracts, skin erythema, and sterility. As dose increases severity of the effect increases.

Front 6

Dose Limits

Back 6

Radiation exposure limits pertinent to the protection of radiation workers.
Whole Body and Certain tissues and organs.

Front 7

Annual Effective Dose Limit for Occupational Exposure

Back 7

50 mSv
5 rem
5000 mrem

Front 8

ALARA

Back 8

As Low As Reasonably Achievable

Front 9

3 Principles of Personal Exposure Reduction

Back 9

1) Time--reduce amount of time spent in the vacinity of source.
2) Distance--increase distance between individual and source.
3) Shielding--use shielding material to attenuate radiation.

Front 10

Occupational Dose Limits for Embryo/Fetus/Pregnancy

Back 10

5 mSv/term
0.5 rem
500 mrem

Front 11

Primary Barriers

Back 11

Can be struck by the primary or useful beam, scattered, and leakage radiation.

Front 12

Secondary Barriers

Back 12

Can only be struck by scattered and leakage radiation.

Front 13

Protective Devices

Back 13

Lead apron, Gloves, Glasses, shields.

Front 14

Gonadal Shielding

Back 14

Flat contact shields
Shaped contact shields Shadow shields