Table 4:
Dominant PTV and PTVs Combined by Dose Level [Doses are in 10 fractions]
| n | Median | Min | Max | |||
|---|---|---|---|---|---|---|
| Level II* (4.0 Gy/fx) | Dominant PTV | Volume (cc) | 7 | 148.0 | 22.8 | 176.9 |
| D95 | 7 | 40.6 | 38.1 | 41.9 | ||
| D99 | 7 | 39.2 | 36.9 | 40.5 | ||
| % volume receiving ≥ 40 Gy | 7 | 98.3 | 37.9 | 99.5 | ||
| Level III (4.5 Gy/fx) | Dominant PTV | Volume (cc) | 7 | 55.5 | 31.9 | 278.9 |
| D95 | 7 | 45.4 | 36.5 | 47.0 | ||
| D99 | 7 | 43.0 | 35.7 | 46.1 | ||
| % volume receiving ≥ 45 Gy | 7 | 98.5 | 63.5 | 100.0 | ||
| Level IV (5.0 Gy/fx) | Dominant PTV | Volume (cc) | 8 | 90.6 | 27.9 | 437.8 |
| D95 | 8 | 49.4 | 34.0 | 57.6 | ||
| D99 | 8 | 47.8 | 33.1 | 55.0 | ||
| % volume receiving ≥ 50 Gy | 8 | 92.5 | 52.3 | 100.0 |
*
Data was never received for one patient on this dose level.
Abbreviations: Gy, Gray; fx, fraction; PTV, planning target volume