Table 4.
Mean values of organs at risk using the ICRU reference point doses with the conventional planning method and the D2 and D5 values using the 3D CT planning method.
|
Group 1 Gy (%) |
Group 2 Gy (%) |
P | |
| ICRU | |||
| Rectum | 6.2 (89.0) | 5.9 (84.7) | 0.34 |
| Bladder | 5.2 (74.2) | 4.9 (69.9) | 0.51 |
| D2 | |||
| Rectum | 8.1 (116.0) | 8.5 (120.8) | 0.46 |
| Bladder | 8.6 (122.3) | 9.7 (138.8) | 0.03 |
| Sigmoid | 5.9 (84.4) | 7.1 (100.5) | 0.009 |
| Bowel | 6.3 (90.1) | 7.2 (103.5) | 0.07 |
| D5 | |||
| Rectum | 7.0 (100.0) | 7.2 (103.5) | 0.43 |
| Bladder | 7.3 (104.0) | 8.2 (117.4) | 0.03 |
| Sigmoid | 4.6 (65.4) | 5.5 (78.2) | 0.02 |
| Bowel | 5.3 (75.6) | 5.8 (83.9) | 0.2 |
*Abbreviations: Group 1 = CTV coverage > 95% isodose line prescribed to Point A, Group 2 = CTV coverage < 95% isodose line prescribed to Point A.