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FRCR Part 1 Physics > Dose Levels (Erin) > Flashcards

Dose Levels (Erin) Flashcards

1
Q

Ct Head effective dose

A

2mSv

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2
Q

Extremity xray typical effective dose

A

<0.01 mSv

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3
Q

Chest xray effective dose

A

0.02 mSv

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4
Q

Lumbar spine effective dose

A

1.3 mSv

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5
Q

Barium enema effective dose

A

7 mSv

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6
Q

Ct chest effective dose

A

6-8 mSv

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7
Q

CTAP effective dose

A

10 mSv

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8
Q

Lung perfusion scan (NM) effective dose

A

1 mSv

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9
Q

Bone scan (NM) effective dose

A

4 mSv

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10
Q

FDG PET scan effective dose

A

8 mSv

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11
Q

Natural risk of paediatric cancer?

A

1 in 500

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12
Q

Excess risk of childhood cancer per 1 mSv

A

1 in 13,000

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13
Q

Tissue weighting factor gonads

A

0.08

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14
Q

Tissue weighting factor for
Bone marrow
Breast
Colon
Stomach
Lung

A

0.12

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15
Q

Tissue weighting factor for
Bladder
Liver
Thyroid
Oesophagus

A

0.04

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16
Q

Tissue weighting factor for
Brain
Bone
Skin
Salivary glands

A

0.01

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17
Q

Tissue weighting factor for “remainder organs”

A

0.12

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18
Q

Deterministic threshold (Gy for)
Bone marrow depression of cell production

A

0.5 Gy

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19
Q

Deterministic threshold (Gy for)
Skin early transient erythema

A

2 Gy

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20
Q

Deterministic threshold (Gy for)
Skin necrosis

A

10 Gy

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21
Q

Deterministic threshold (Gy for)
Cataract formation

A

0.5 Gy

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22
Q

Deterministic threshold (Gy for)
Testes (temporary sterility)

A

0.15 Gy

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23
Q

Deterministic threshold (Gy for)
Ovaries sterility

24
Q

Radiation weighting factor for gamma and X-rays

25
Q

Radiation weighting factor for electrons/positrons

26
Q

Radiation weighting factor for protons

27
Q

Radiation weighting factors for alpha particles

28
Q

Radiation weighting factor for neutrons

A

5-20 (dependent on energy)

29
Q

What is the adult cancer risk for 1 mSv

A

1 in 20,000

30
Q

Whole body dose limit for employees

31
Q

Skin and extremities dose limit for employees

32
Q

Eye does limit for employees

33
Q

Whole body dose limit for trainees <18yrs

34
Q

Skin and extremities dose limit for trainees <18yrs

35
Q

Eye dose limit for trainees <18yrs

36
Q

Whole body dose limit for member of the public

37
Q

Skin and extremities dose limit for members of the public

38
Q

Eye dose limit for members of the public

39
Q

Dose limit to foetus during pregnancy

A

<1mSv for the remainder of the pregnancy

40
Q

Dose levels where employer must be classified
And for the eyes?

A

> 3/10th of any dose limit
6mSv for whole body
150mSv for skin/extremities

15mSv for eyes

41
Q

How long must the dose records of classified workers be kept for

42
Q

National DRLs - planar radiography:
ESD for abdomen AP

A

ESD = 4.0 mGy

43
Q

National DRLs - planar radiography:
ESD for chest AP

A

ESD = 0.2 mGy

44
Q

National DRLs - planar radiography:
ESD for lumbar spine AP

A

ESD = 5.7 mGy

45
Q

National DRLs - planar radiography:
ESD for lumbar spine LAT

A

ESD = 10 mGy

46
Q

National DRLs - planar radiography:
ESD for knee AP and LAT

A

ESD = 0.3 mGy

47
Q

National DRLs - planar radiography:
DAP for abdomen AP

A

DAP = 2.5 Gycm-2

48
Q

National DRLs - planar radiography:
DAP for chest AP

A

DAP = 0.15 Gycm-2

49
Q

National DRLs - planar radiography:
DAP for Lumbar spine AP

A

DAP = 1.5 Gycm-2

50
Q

National DRLs - planar radiography:
DAP for lumbar spine lateral

A

DAP = 2.6 Gycm-2

51
Q

National DRLs - CT
CTDI for CT head

A

CTDI = 60 mGy

52
Q

National DRLs - CT
DLP for CT CAP

A

DLP = 1000 mGy/cm

53
Q

National DRLs - CT
CTDI for CTPA

A

CTDI = 13 mGy

54
Q

National DRLs - CT
CTDI for CT KUB

A

CTDI = 10 mGy

55
Q

National DRLs - CT
DLP for CT head

A

DLP = 970 mGy cm

56
Q

National DRLs - CT
DLP for CTPA

A

DLP = 440 mGy cm

57
Q

National DRLs - CT
DLP for CTKUB

A

DLP 460 mGy cm

FRCR Part 1 Physics (20 decks)

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