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30 Cards in this Set
- Front
- Back
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radioactivity |
rate of radioactive decay |
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radioactivity SI unit |
Bq |
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exposure |
amount of ionizations produced in air |
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exposure SI unit |
C/kg |
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absorbed dose |
amount of radiation absorbed or deposited |
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absorbed dose SI unit |
Gy |
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dose equivalent |
accounts for biological effects of different types of radiation |
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dose equivalent SI unit |
Sv |
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QF of x-ray |
1 |
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QF of gamma rays |
1 |
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QF of beta rays |
1 |
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QF of alpha particle |
20 |
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QF of neutron |
10 |
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effective dose equivalent |
sum of the products of the dose equivalent to each irradiated organ - whole body effects |
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ALARA |
as low as reasonable achievable |
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dose limit for occupational |
50 mSv |
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dose limit for occupational extremities |
500 mSv |
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dose limit for lens of occupational |
150 mSv |
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dose limit for embryo/fetus |
cannot exceed 5 mSv entire pregnancy .5 mSv per month |
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dose limit public infrequent |
5 mSv |
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dose limit public frequent |
1 mSv |
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dose limit public extremity |
50 mSv |
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radiation area |
>5 mrem in 1 hr, 30 cm from source |
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high radiation area |
> 100 mrem |
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very high radiation area |
500 rad or more in 1 hr, 1 m from the source |
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two types of radiation barriers |
primary and secondary |
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occupancy factor |
T fraction of time area to be shielded is occupied |
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workload |
W amount of time the device is used MU / week |
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use factor |
U fraction of time barrier is struck by primary beam |
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when is it a medical event
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wrong amount - >20% total or >50% of single wrong drug wrong route wrong patient wrong mode |
