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RADT 150 > rad protetion exam 2 > Flashcards

rad protetion exam 2 Flashcards

1
Q

somatic damage

A

biological damage

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2
Q

radiodermatitis

A

inflamation to skin

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3
Q

1st way to measure dose

A

SED

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4
Q

amount of dose a person can be continually exposed to without harmful effects

A

tolerance dose

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5
Q

dose of radiation below which an individual has a negligable change of biological damage

A

threshold dose

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6
Q

MPD max permissable dose

A

5 Rem (age minus 18)

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7
Q

RAD X Qualifying factor

A

dose equivalency

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8
Q

average absorbed dose x weighting factor for tissue

A

effective dose equivalency

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9
Q

takes into account the sensitivity of tissue

A

effective dose

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10
Q

Wr

A

type of tissue

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11
Q

roentgen ionization in air =

A

C/kg

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12
Q

RAD =

A

Gray

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13
Q

REM=

A

seivert

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14
Q

REM stands for

A

calculation of potential effect of absorbed dose

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15
Q

1 roentgen =

A

2.58 x 10^-4 C/kg

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16
Q

only way to detect exposure

A

ionization chamber

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17
Q

measures ionization in air

A

roentgen

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18
Q

measures xray an gamma radiations

A

roentgen

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19
Q

the amount of radiation a person is subjected to or exposed to

A

roentgen

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20
Q

measures absorbed dose

A

RAD or gray

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21
Q

the transfer of energy to tissue

A

absorbed dose

22
Q

then denser the object, the greater the

A

absorbtion

23
Q

dose equivalency is measured

A

sievert/ REM

24
Q

method to calculate the effect of absorbed dose for all types of ionizing radiation

A

sievert/REM Radiation Equivalent Man

25
Q

DE = (dose equivalency)

A

DE= RAD X Qualifying factor
DE= gray x qualifying factor

26
Q

QUALIFYING FACTORS 1

A

xray, beta, gamma, high energy protons

27
Q

QUALIFYING FACTORS 2

A

low energy internal protons

28
Q

QUALIFYING FACTORS 5

A

thermal neutrons (slow)

29
Q

QUALIFYING FACTORS 20

A

alpha particles, fast neutrons, unkown energies

30
Q

electron displacement

A

xray

31
Q

short wavelength, high energy magnetic waves emitted by nuceli of radiactive substances (displacement of neutrons)

A

gamma

32
Q

high speed electron or positron (artificial reaction)

A

beta

33
Q

a positively charged particle ejected by certain radioactive elements consists of two pretons and two neutrons

A

alpha

34
Q

both ejected by nucleus (nucclear reactions)

A

protons and neutrons

35
Q

100 RAD =

A

1 GRAY

36
Q

100 rem =

A

1 sievert

37
Q

1 roentgen =

A

2.58 x 10^-4 C/kg
OR
3.88 x 10^3 R

38
Q

the product of the average absorbed dose in a tissue or organ in human body

A

equivalent dose (Ht)

39
Q

wighting factor

A

Wr

40
Q

ED (equivalent dose ) =

A

ED= RAD x Wf
OR
Ht = D x Wr

41
Q

provides a measure of the overall risk of exposure to different tissues (tissue types)

A

effective dose (E)

42
Q

EFFECTIVE DOSE
E=

A

D x Wr x Wt
E= 5 gray x (xray) 1x .20 (gonads)= 1 sV

43
Q

Wt gonads

A

.20

44
Q

Wt: red bone marrow, colon, lung, stomach,

A

.12

45
Q

Wt: bladder, breast, liver, esophagus, thyroid, other

A

.05

46
Q

Wt: skin and bone surface

A

.01

47
Q

describes internal and external measurements of groups or populations from low doses of ionizing radiation

A

Collective Effective Dose (Sf)

48
Q

Sf problem:
Unit= person x sievert

A

collective effective dose

49
Q

radiation dose quantity to monitor and control human exposure to ionizing radiation

A

TOTAL EFFECTIVE DOSE EQUIVALENT (TEDE)

50
Q

regulatory limit for TEDE is .05 Sv for occupational and .001 Sv for general pop

A

TEDE limits

RADT 150 (6 decks)

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