Gynae BT_Lucknow_2018

Planning aim and prescription dose

 Planning aim: what you want to obtain, e.g. 4x7 Gy

 Prescribed dose: what you decide to treat

Case 6, IIIB, IC/IS BT Appendix, ICRU 89 , PP201-207

Structure

Dose-volume parameter

Planning aim, Gy Prescribed dose Gy

CTV

EQD2

D

≥ 85

88.9

HR

10

90

3

Bladder

EQD2

D

≤ 90

71.1

3

2cm

3

Rectum EQD2 3

D

≤ 70

65.6

2cm

3

Sigmoid

EQD2

D

≤ 70

57.4

3

2cm

3

Bowel

EQD2

D

≤ 70

53.3

3

2cm

37