Table 1 Cost functions used in robust optimization
From: Evaluation of plan quality and robustness of IMPT and helical IMRT for cervical cancer
Region of interest | Dose Objective | Weight | Robust |
|---|---|---|---|
CTV | Minimum dose 46.8 Gy | 70 | On |
Uniform dose 47 Gy | 80 | On | |
Maximum dose 48G y | 50 | On | |
External | Dose fall-off: high dose 46.8 Gy, low dose 20 Gy, 10-mm distance | 10 | |
3-mm ring | Max EUD 45 Gy, A = 150 | 5 | |
10-mm ring | Max EUD 20 Gy, A = 150 | 5 | |
Bladder | Max Dose 48 Gy | 10 | |
Max EUD 30 Gy, A = 2 | 5 | On | |
Rectum | Max Dose 48 Gy | 10 | On |
Max EUD 30 Gy, A = 2 | 5 | ||
Spinal cord | Max Dose 10 Gy, A | 2 | |
Bowel | Max Dose 48 Gy | 15 | |
Max EUD 30 Gy, A = 2 | 5 | ||
Sigmoid | Max Dose 48 Gy | 15 | |
Max DVH 40 Gy, 20% | 10 | ||
Femoral heads | Max EUD 15 Gy, A = 2 | 2 |