L3 Flashcards by Jason Tepper | Brainscape

Q

Radiation to gonads with lead apron

A

reduced 98%

10 times less than average background radiation

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Q

kVp and dose

A

Increasing kVp reduces dose

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Q

kVp and contrast

A

Increasing kVp reduces contrast

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Q

Minimum kVp

A

60

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Q

X ray source to skin must be longer than

A

7 inches

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Q

Rectangular vs circular collimation

A

Rectangular decreases radiation 5 times more

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Q

Filtration is used to removed

A

Longe wave length photons

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Q

True or false: lead apron is not required

A

True

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Q

ALARA

ALADP

A

As Low As Reasonably Achievable

As Low As Diagnositcally Possible

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Q

If operator cant leave room they should stand

A

6 feet away 90-135 degrees (on side where beams are going)

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Q

Occupational dose limit for Stochastic effects

A

50msv annually

10msv X age cumulatively

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Q

Occupational dose limit for deterministic effects

A

150msv to eye

500msv to skin hands feet

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Q

Public dose for stochastic effects

A

1msv for continuous
5msv for infrequent
annually

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Q

Public dose for deterministic effects

A

50msv annually

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Q

Embryo-fetus dose

A

.5 msv per month

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