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63

Planning aim and prescription dose

Planning aim: what you want to obtain

Prescribed dose: what you decide to treat

Structure

Dose-volume

parameter

Planning aim, Gy Prescribed dose

Gy

CTV

HR

EQD2

10

D

90

≥ 85

88.9

Bladder

EQD2

3

D

2cm

3

≤ 90

71.1

Rectum EQD2

3

D

2cm

3

≤ 70

65.6

Sigmoid

EQD2

3

D

2cm

3

≤ 70

57.4

Bowel

EQD2

3

D

2cm

3

≤ 70

53.3

Case 6

Appendix,

ICRU 89