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Main treatment characteristics.
| Characteristics | No of Patients |
|---|---|
| irradiation | |
| photons + carbon ions | 67 |
| median IMRT dose | Gy (range) |
| 50 (48–56) | |
| median C12 dose | |
| 24 (18–24) | |
| median dose of cervical lymphatic drainage | |
| 50 (48–56) | |
| cumulative dose (IMRT + C12) | |
| 74 (68–74) | |
| median CTV volume (ccm) | |
| IMRT | 346 ccm (range: 21–921 ccm) |
| C12 | 134 ccm (range: 21–411 ccm) |
Abbreviations: intensity modulated radiotherapy (IMRT), carbon ions (C12), gray (Gy), cubic centimeter (ccm).
