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Xray registry review > Radation Protection > Flashcards

Radation Protection Flashcards

1
Q

exposure monitoring of personnel is requried whenever radiation workers are likely to risk receiving what percentage of annual occupational EfD limit of 50 mSv (5 rem)?

A

10% or more

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2
Q

what is the most common type of monitoring device for occupational exposure?

A

TLD

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3
Q

what dosimeter contains an aluminum oxide detector?

A

OSL

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4
Q

how low of an accurate reading can an OSL produce?

A

as low as 1 mrem

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5
Q

which dosimeter is more sensitive between an OSL and TLD

A

OSL

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6
Q

which dosimeter is most common for personnel monitoring?

A

OSL

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7
Q

which monitoring device is the least inexpenisve?

A

film badge

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8
Q

what are the point of metal filters in film badges?

A

detect different kind of radiations (penetrating or nonpenetrating)

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9
Q

what is a TLD composed of?

A

lithium fluoride

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10
Q

what is the most senestive type of personnel dosimeters?

A

pocket ionization chamber

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11
Q

what is a pocket ionization chamber composed of?

A

two electrodes, one positively charged and one negatively charged

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12
Q

when do somatic effects become evident?

A

in the irradiated individual

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13
Q

how is exposure unit determined?

A

ionization in the air

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14
Q

how many millisievert are in one sievert?

A

1000

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15
Q

what are 2 general types of radiation detection devices?

A

field survey and personnel monitoring

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16
Q

what is primary beam referred to after it passes through the beam restricing device?

A

useful beam

17
Q

which xray interaction occurs most often w xray energies over 100 kev?

A

compton effect

18
Q

the fact that some materials can store energy, then emit light when heated, is the principle that is used for which dosimeter?

A

TLD

19
Q

what is equal to 1 joule per kilogram?

A

gray

20
Q

what measures the rate @ which energy is trasnferred from radiation to soft tissue?

A

LET

Xray registry review (3 decks)

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