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30 Cards in this Set
- Front
- Back
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lead equivalency protective gowns front and back |
front - 0.5, back 0.25 |
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lead eq. for gonad shields and 150kv |
gonad shield - 0.25, 150kv - 0.5 |
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lead eq for lead aprons kv less than 100 kv between 100-150 kv greater than 150 |
0.25, 0.35, 0.5 |
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how long does a person have to appeal closure of suspension of a registration certificate |
30 days |
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which should be adhered in cases of conflict? |
occupational health and safety act |
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which regulation prevails in case of conflict |
alberta provincial act and regulations |
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limit of abdomen of pregnant radiaiton for the remainder of pregnancy (national limt) |
2mSv |
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how long should dosimetry records be kept as a provincial standard |
5 years |
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what is included in occupational exposure |
- leakage radiation from working with x-ray equipment - scatter radiation from working with radiation |
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for thyroid or gonad shielding greater than _ in diameter is unacceptable |
5mm |
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non-threshold/stochastic effects |
some suffer effects no matter what the dose is |
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the basis for radiation protection standards is _ _ type of dose response |
linear, non threshold |
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radiation protection provincial agency |
workplace policy and standards development branch of alberta |
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fluoro minimal focal spot to skin distance - stationary equipment - mobile - special application |
stationary equipment - 28 mobile - 30 special application - 20 |
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doses for diagnostic procedures can vary by a factor of _ _ or more |
50-100 |
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how much of x-ray interactions in a tube actually produce x-rays |
1% |
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how much would mAs change if SID is doubled |
4 x |
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occupational exposure is measured in |
mSv |
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define absorbed dose |
dose that measure therapeutic radiation doses and specific tissue doses |
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absorbed dose is measured in |
Gy
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what cell is most radio-resistant |
brain and spinal cord cells |
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absorbed dose measured in |
grays |
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accepted whole body dose for radiation workers |
20mSv |
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accepted whole body dose for general public |
1mSv |
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what type of radiation must the tech not be exposed to occupationally |
gamma ray/primary beam |
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what technical factor controls quality of x-ray beam |
kV |
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most radio sensitive tissue |
gonadal tissue |
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purpose of cathode |
focuses electron stream toward anode
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produces thermionic cloud and controls length of exposure |
cathode |
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what does timer switch control |
keeps AEC from over exposing |
