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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
Radiation weighting factor for electrons/positrons
1
26
Radiation weighting factor for protons
5
27
Radiation weighting factors for alpha particles
20
28
Radiation weighting factor for neutrons
5-20 (dependent on energy)
29
What is the adult cancer risk for 1 mSv
1 in 20,000
30
Whole body dose limit for employees
20 mSv
31
Skin and extremities dose limit for employees
500 mSv
32
Eye does limit for employees
20 mSv
33
Whole body dose limit for trainees <18yrs
6 mSv
34
Skin and extremities dose limit for trainees <18yrs
150 mSv
35
Eye dose limit for trainees <18yrs
15 mSv
36
Whole body dose limit for member of the public
1 mSv
37
Skin and extremities dose limit for members of the public
50 mSv
38
Eye dose limit for members of the public
15 mSv
39
Dose limit to foetus during pregnancy
<1mSv for the remainder of the pregnancy
40
Dose levels where employer must be classified And for the eyes?
>3/10th of any dose limit 6mSv for whole body 150mSv for skin/extremities 15mSv for eyes
41
How long must the dose records of classified workers be kept for
30 years
42
National DRLs - planar radiography: ESD for abdomen AP
ESD = 4.0 mGy
43
National DRLs - planar radiography: ESD for chest AP
ESD = 0.2 mGy
44
National DRLs - planar radiography: ESD for lumbar spine AP
ESD = 5.7 mGy
45
National DRLs - planar radiography: ESD for lumbar spine LAT
ESD = 10 mGy
46
National DRLs - planar radiography: ESD for knee AP and LAT
ESD = 0.3 mGy
47
National DRLs - planar radiography: DAP for abdomen AP
DAP = 2.5 Gycm-2
48
National DRLs - planar radiography: DAP for chest AP
DAP = 0.15 Gycm-2
49
National DRLs - planar radiography: DAP for Lumbar spine AP
DAP = 1.5 Gycm-2
50
National DRLs - planar radiography: DAP for lumbar spine lateral
DAP = 2.6 Gycm-2
51
National DRLs - CT CTDI for CT head
CTDI = 60 mGy
52
National DRLs - CT DLP for CT CAP
DLP = 1000 mGy/cm
53
National DRLs - CT CTDI for CTPA
CTDI = 13 mGy
54
National DRLs - CT CTDI for CT KUB
CTDI = 10 mGy
55
National DRLs - CT DLP for CT head
DLP = 970 mGy cm
56
National DRLs - CT DLP for CTPA
DLP = 440 mGy cm
57
National DRLs - CT DLP for CTKUB
DLP 460 mGy cm

FRCR Part 1 Physics (20 decks)

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