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LRA216 > Radiation Protection > Flashcards

Radiation Protection Flashcards

1
Q

SI for absorbed dose

A

Gray

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2
Q

SI for radiation in the air

A

Air Kerma

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3
Q

SI for equivalent dose

A

Seivert

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4
Q

Cardinal Rules of reducing the possibility of occupational exposure

A

Time, Distance, Shielding

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5
Q

Dose limit of general pubic

A

1/10 or 10% of occupational exposure

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6
Q

How does radiographer wear dosimeter?

A

Collar level, anterior surface of body and outside lead apron

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7
Q

Location of dosimeter when radiographer is pregnant?

A

Waist (and collar…should wear 2)

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8
Q

Area of maximum exposure received by patient.

A

Skin entrance

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9
Q

Monthly occupational dose limit for fetus.

A

.5 msv

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10
Q

Annual occupational exposure limit

A

5 rem

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11
Q

The council that makes recommendations for dose limits

A

NCRP - National Council Radiation Protection

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12
Q

Concepts of effective dose

A

Types of radiation, RBE, radiosensitivity of tissues and organs

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13
Q

From who are dose limits derived?

A

BEIR & NSC

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14
Q

What is the best approach to radiation exposure a tech should use?

A

ALARA - As Low as Responsibly Acheivable

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15
Q

Annual occupational dose limit for lens of eyes

A

150 mSv

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16
Q

Annual occupational dose limit for skin entrance

A

500 mSv

17
Q

What is the dose-response relationship to radiation based on?

A

Linear non-threshold

18
Q

What information does a dosimetry report include?

A

Control Badge Exposure, Lifetime equivalent dose, radiation quality

19
Q

Device that is employed for the detection and measurement from exposure to xrays.

A

Dosimeter

20
Q

Device that detects presence of radiation

A

Geiger-Mueller Counter

21
Q

3 types of dosimeters

A

Film Badges (most used), Thermoluminescent (TLD), Optically Stimulated Luminescence (OSL)

22
Q

Conventional for Exposure

A

Roentgen (R)

23
Q

Conventional for absorbed dose

A

Radiation Absorbed Dose (RAD)

24
Q

Conventional for Effective and Equivalent dose

A

Radiation Equivalent to Man (REM)

25
Q

How is exposure calculated?

A

Exposure rate x exposure time

26
Q

Conventional unit for occupational exposure

A

REM

LRA216 (3 decks)

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