Table 3.
Beam arrangements and protocol deviations following RTOG 1021 criteria
| 7C | 9C | 13C | 7NC | 9NC | 10NC | |
|---|---|---|---|---|---|---|
| D2cm | ||||||
| None | 1 | 2 | 6 | 2 | 4 | 10 |
| Acceptable | 6 | 8 | 4 | 6 | 6 | 0 |
| Unacceptable | 3 | 0 | 0 | 2 | 0 | 0 |
| R50% | ||||||
| None | 0 | 1 | 1 | 1 | 1 | 5 |
| Acceptable | 5 | 6 | 6 | 6 | 7 | 5 |
| Unacceptable | 5 | 3 | 3 | 3 | 2 | 0 |
| CI | ||||||
| None | 9 | 10 | 10 | 10 | 9 | 9 |
| Acceptable | 1 | 0 | 0 | 0 | 1 | 1 |
| Unacceptable | 0 | 0 | 0 | 0 | 0 | 0 |
| OAR | ||||||
| None | 4 | 4 | 3 | 4 | 4 | 5 |
| Acceptable | 1 | 1 | 1 | 1 | 1 | 4 |
| Unacceptable | 5 | 5 | 5 | 5 | 5 | 1 |
| Total deviations | ||||||
| None | 14 | 17 | 20 | 17 | 18 | 29 |
| Acceptable | 13 | 15 | 12 | 13 | 15 | 10 |
| Unacceptable | 13 | 8 | 8 | 10 | 7 | 1 |
| Clinically suitable plans | 1 | 2 | 2 | 3 | 3 | 9 |
D2cm, dose at any point 2 cm from the PTV; R50%, ratio of the volume of half the PD to the volume of the PTV; CI, conformity index; OAR, organ(s) at risk.