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Values of dosimetric parameters in the 3-beam IMPT-3D plan and 36-beam IMPT-DET plan with robust optimization for the BOS cancer case.
| Tissue | Dosimetric parameter | 3-beam IMPT | 36-beam IMPT-DET |
|---|---|---|---|
| CTV | D99% (Gy) | 65.3 | 65.3 |
| D1% (Gy) | 73.4 | 71.9 | |
| Brainstem | V20 (%) | 57.5 | 36.8 |
| V30 (%) | 39.5 | 23.3 | |
| V40 (%) | 24.9 | 13.9 | |
| V50 (%) | 12.8 | 7.1 | |
| V60 (%) | 4.1 | 1.8 | |
| Dmax (Gy) | 67.3 | 69.1 | |
| Dmean (Gy) | 26.6 | 18.9 | |
| Cord | Dmax (Gy) | 28.3 | 25.6 |
| Dmean (Gy) | 0.93 | 0.67 |
