Table 3:
Dominant PTV, PTVs Combined, and Organs at Risk [Doses are in 10 fractions]
| n | Median | Min | Max | ||
|---|---|---|---|---|---|
| Dominant PTV | Volume (cc) | 22 | 98.2 | 22.8 | 437.8 |
| D95 (Gy) | 22 | 44.4 | 34.0 | 57.6 | |
| D99 (Gy) | 22 | 42.7 | 33.1 | 55.0 | |
| % volume receiving ≥ dose reported on the CRF (35 to 50 Gy) | 22 | 97.2 | 37.9 | 100.0 | |
| PTVs Combined† | Volume (cc) | 22 | 73.3 | 22.8 | 437.8 |
| D95 (Gy) | 22 | 43.8 | 34.0 | 57.1 | |
| D99 (Gy) | 22 | 42.0 | 33.1 | 55.0 | |
| % volume receiving ≥ dose reported on the CRF (35 to 50 Gy) | 22 | 93.6 | 38.5 | 100.0 | |
| Liver minus GTV | Volume (cc) | 22 | 1421.8 | 935.5 | 3394.3 |
| Dmean (Gy) | 22 | 14.6 | 2.1 | 27.3 | |
| D700cc (Gy) | 22 | 9.7 | 0.2 | 23.2 | |
| D700cc (spared) (Gy) | 22 | 8.1 | 0.2 | 38.8 | |
| % Volume of the normal liver getting ≥ 27 Gy | 22 | 21.5 | 2.0 | 48.2 | |
| % Volume of the normal liver getting ≥ 24 Gy | 22 | 26.2 | 2.5 | 53.6 | |
| Small Bowel | D0.5cc | 18 | 19.7 | 0.4 | 37.8 |
| D5cc | 18 | 14.4 | 0.3 | 31.7 | |
| D25cc | 18 | 3.0 | 0.0 | 24.5 | |
| Stomach | D0.5cc | 21 | 19.7 | 0.7 | 39.6 |
| D5cc | 21 | 18.8 | 0.3 | 34.6 | |
| D25cc | 21 | 16.6 | 0.2 | 29.3 | |
| Spinal Cord | Dmax | 22 | 16.9 | 0.5 | 30.7 |
| Kidney (bilateral) | Dmean | 22 | 1.2 | 0.1 | 12.9 |
†
The number of PTVs per patient range from 1 to 5 (see Table 1).
Abbreviations: PTV, planning target volume; cc, cubic centimeter; Gy, gray; CRF, case report form; GTV, gross tumor target volume