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27 Cards in this Set
- Front
- Back
Who is the father of Rad Protection? |
W.H. Rollins |
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Who used fruit flies for testing? |
H.J. Muller |
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Somatic Damage of early pioneers include: |
Radiodermatitis, Cancer, and Blood disorders |
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What was used from 1900-1930 to measure radiation exposure due to redness of the skin? |
Erythema |
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When was the First International Meeting with congress of radiology? |
1925 |
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When did the Second Meeting take place to where the ICRP accepted (R) as the unit of exposure? |
1928 |
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What does NCRP stand for and when was it discovered? |
National Council of Radiation Protection and Measurements 1964 |
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Dose of radiation below which an individual has a negligible chance of sustaining specific biological damage. |
Tolerance Level (Threshold dose) |
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In 1936 ________ is recommended as a tolerance daily dose which is 87mrem!!!! |
0.1 R |
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Random in Nature |
Stochastic |
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Only in Stochastic effects you will have: |
Cancer and Genetic effects |
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Deterministic is pre determined biological effects and can be found: |
Early and Late in life
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Nausea, Fatigue, Redness of skin, Loss of hair, Intestinal disorder, Shedding, and Blood disorders are all considered: |
Early Deterministic Effects |
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Cataracts, Fibrosis, Organ atrophy, Loss Parenchyma, Reduced fertility and Sterility are all considered: |
Late Deterministic Effects |
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Units for "Ionization in Air" |
Trad: (R) SI: Coulombs |
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Units for "Absorbed Dose" |
Trad: rad SI: Gray |
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Units for "Effective dose/Biological damage" |
Trad: rem SI: Sievert |
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Total electrical charge (all pluses or all minuses) per mass in dry air at standard temp: |
Exposure |
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Kinetic energy released in a unit of mass of air. Another term for exposure in the air. Always read out in Gy. |
Air Kerma |
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The sum total of air kerma over the exposed area of the pt's surface or a measure of the amount that has been thrust into a portion of the patients body surface. Specified in units of mGy-cm2 |
Dose Area Product |
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Rad to Gy |
#of rad divided by 100 |
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The amount of energy transferred on average by incident radiation to an object per unit length of track through object which helps explain the need for a quality, or modifying factor. |
Linear Energy Transfer (LET) ^ LET = ^ radiation to the pt = ^ damage |
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What is the equation for EqD?
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D x Wr
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What is the equation for EfD? |
D x Wr x Wt |
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1 Sv = how many rems? |
100 rems |
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Siverts multiplied by 1000 = |
Millisiverts |
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Quantity used to describe radiation exposure of a population or group from low doses of different sources of ionizing radiation. |
Collective EfD measured in person-siverts (people x dose) |