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FRCR2 > RT OAR dose tolerances > Flashcards

RT OAR dose tolerances Flashcards

1
Q

Dose constraint for small bowel

A

Small bowel - 0.1cc < 48Gy

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2
Q

Dose constraint for spinal cord

A

Spinal cord - Dmax < 46Gy

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3
Q

Dose constraint for liver

A

Liver - V30Gy < 30%, max to whole liver is 20Gy

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4
Q

Dose constraint for kidneys

A

Ipsilat kidney - V20Gy ≤ 40%
Con kidneys - V20Gy < 30%

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5
Q

Dose constraint for heart

A

Max dose 40Gy

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6
Q

Dose constraint for lung

A

V20 <35%

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7
Q

Dose constraint for ovary

A

Max 10Gy

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8
Q

Dose constraint for parotid

A

Max dose 32Gy

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9
Q

Dose constraint for testis

A

Max 2Gy

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10
Q

Dose constraint for brainstem

A

55Gy

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11
Q

Dose constraint for spinal cord

A

46Gy

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12
Q

Dose constraint for optic nerves

A

50Gy

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13
Q

Dose constraint for optic chiasm

A

50Gy

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14
Q

Dose constraint for lens

A

6Gy

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15
Q

Dose constraint for globes

A

45Gy

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16
Q

Dose constraint for cornea

A

40Gy

17
Q

Dose constraint for retina

A

60Gy

18
Q

Dose constraint for testis

A

Mean dose <20Gy

19
Q

Dose constraint for cochlea

A

Mean <45Gy

20
Q

What is the dose constraint for breast RT - ipsilateral lung

A

V30Gy <17%
V18Gy <15% for two fields & <30% for 3 fields

21
Q

What is the dose constraint for breast RT - heart

A

V13Gy <10%
V25Gy <5%
Mean dose ≤2Gy

22
Q

What is the dose constraint for breast RT - brachial plexus

A

Max dose <40Gy (as 2.67Gy/#)

23
Q

What is the dose constraint for breast RT - spinal cord

A

Max dose <37Gy (as 2.67Gy/#)

24
Q
A

FRCR2 (28 decks)

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