Table 2.
Bladder and small bowel DVH metrics for the prone and supine orientations. (average ± standard deviation)
| DVH Metric | Prone | Supine | p value |
|---|---|---|---|
| Bladder mean dose (Gy) | 37.1 ± 4.2 | 37.3 ± 4.1 | 0.93 |
| Bladder V40 (%) | 45.4 ± 16.3 | 46.0 ± 12.6 | 0.93 |
| Bladder V30 (%) | 65.2 ± 14.4 | 68.8 ± 18.5 | 0.67 |
| Small bowel mean dose (Gy) | 16.7 ± 6.4 | 19.8 ± 6.3 | 0.32 |
| Small bowel V50.4 (cc) | 19.7 ± 27.8 | 10.3 ± 13.9 | 0.38 |
| Small bowel V45 (cc) | 38.9 ± 44.7 | 37.5 ± 51.6 | 0.95 |
| Small bowel V30 (cc) | 77.6 ± 70.6 | 104.9 ± 106.1 | 0.55 |
| Small bowel V20 (cc) | 134.5 ± 99.1 | 201.2 ± 161.7 | 0.33 |
| Small bowel V15 (cc) | 217.2 ± 135.1 | 260.2 ± 198.7 | 0.61 |