Course book Advanced Treatment Planning 2018

ATP: rectum summary

Parallel

Rectum from anal verge to the turn into sigmoid colon

• Mean Dose

Dose (Gy), or dose/volume parameters

• V[Gy] Dose

Outcome

V V V V V

< 50% < 35% < 25% < 20% < 20%

50

60

• D[cc/%] Volume

<15%

65

70

75

Grade 2 or worse late toxicity

• Maximum Dose

Serial