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31 Cards in this Set
- Front
- Back
What are the 2 systems of radiation measurement |
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The ___ is the international standard of ionization in air |
roentgen (R) |
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To measure the amount of radiation absorbed (dose) the ___ was established (SI unit is Gray (Gy) and 1 rad = ____ |
rad (radiation absorbed dose), 0.01Gy |
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To measure the biological effects on humans, the ____ was established (1 rem= ___mrem or __mSv) |
Rem (roentgen equivalent man) , 1000, 10 |
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The Systeme International uses ___ in place of rem where 15v= ___msv= ___rem |
Sievert (sv), 1000, 100 |
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Ionizing radiation can affect cells by causing: |
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Radiation affects body cells according to (4): |
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Long term effects can be either |
Somatic or genetic |
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3 principle methods to reduce exposure: |
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Personal monitoring device, commonly called a "film badge" |
Dosimeter |
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Where should the dosimeter be worn? |
At collar level OUTSIDE of an apron (unless you have a "baby badge".) |
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Types of dosimeters- |
TLD (thermoluminescent dosimeter) and OSL (optically stimulated luminescence) |
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Estimated that _% of the US population receives an xray each year. |
65 |
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You have a _ and _obligation to be knowledgeable about radiation safety and to use this knowledge to avoid all unnecessary ___ ___ exposure to your patients, your co workers, and yourself. |
Legal, ethical, radiation exposute |
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Radiographers are ___ from activities that would result in ___ ___ to the primary xray beam. |
Prohibited, direct exposure |
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ALARA- |
As Low As Resonably Achievable |
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Effective Dose limit- |
The upper limit of exposure for certain population groups |
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The goal is to keep exposure rates ____ so that exposure is below the level at which adverse effects are likely to be observed. |
ALARA |
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ALARA applies to _,_,_, and _. |
You, your co workers, your patients, and the general public |
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ED for occupational exposed radiation workers is __ rem per year or ____ mrem or ___ mSv |
5, 5000, 50 |
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ED for the general public is ___ rem per year (__ mrem or __ mSv) |
0.5, 500, 5 |
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ED for pregnant radiation workers is ___ rem (___ mrem or__ mSv) in a __ month period and not to exceed ___ rem or __ mrem in any given ___ |
0.5, 500, 5, 9, .05, 50, month |
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**The ED amounts do NOT include exposure for ___ ____** |
Medical Treatment |
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Amount of radiation exposure for: chest x-ray |
5-10 mrem |
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Mammogram |
138 mrem |
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CT scan |
2500 mrem |
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Background radiation in US |
360 mrem |
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BE |
200-700 mrem |
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Other methods to reduce exposure |
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Short term biological effects of exposure appear within ____ |
A few months |
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What is the term for radiation burn |
Erythema |