Table 1.
Patient characteristics
| Patient | No. of metastatic sites | Replanned site | Prescription dose | PTV expansion (mm) | PTV volume (mL) |
|---|---|---|---|---|---|
| 1 | 4 | Left 5th rib | 9 Gy × 3 | 5 | 14.4 |
| 2 | 3 | Left external iliac node | 7.25 Gy × 5 | 4 | 24.2 |
| 3 | 4 | Left sacroiliac joint | 9 Gy × 3 | 3 | 19.4 |
| 4 | 1 | External iliac node | 8 Gy × 5 | 4 | 14.2 |
| 5 | 1 | Right iliac node | 9 Gy × 5 | 5 | 9.2 |
| 6 | 2 | Left iliac node | 9.5 Gy × 3 | 4 | 13.3 |
| 7 | 3 | Presacral node | 7 Gy × 5 | 5 | 15.3 |
| 8 | 6 | Right iliac node | 8 Gy × 5 | 5 | 3.2 |
| 9 | 2 | Subcarinal node | 6.4 Gy × 5 | 6 | 21.2 |
| 10 | 2 | RP node | 9 Gy × 5 | 5 | 15.4 |
| 11 | 1 | Presacral node | 7.25 Gy × 5 | 5 | 3.7 |
| 12 | 1 | L1 vertebral body | 12 Gy × 4 | 4 | 6.6 |
| 13 | 1 | Left common iliac node | 7.25 Gy × 5 | 6 | 5.8 |
| 14 | 2 | Left internal iliac node | 11 Gy × 3 | 5 | 8.0 |
| 15 | 1 | Sacrum | 11 Gy × 3 | 4 | 5.3 |
| - | Median (range) | - | - | Median (range) | Mean (SD) |
| 2 (1-6) | 5 (3-6) | 11.9 (6.6) |
Abbreviations: PTV = planning target volume; RP = retroperitoneal; SD = standard deviation.