Table 4.
DTI changes under different radiation doses (cm).
| Treated Time | 0 | 1 week | 2 weeks | 3 weeks | 4 weeks | 5 weeks |
|---|---|---|---|---|---|---|
| (Treated dose) | (0 Gy) | (10 Gy) | (20 Gy) | (30 Gy) | (40 Gy) | (50 Gy) |
| DTIheart | 15.61 ± 2.96 | 15.49 ± 2.82* | 15.33 ± 2.92* | 15.22 ± 2.84* | 15.18 ± 2.77* | 15.16 ± 2.77* |
| DTIspinal-cord | 7.22 ± 1.53 | 7.20 ± 1.56 | 7.12 ± 1.50 | 7.23 ± 1.54 | 7.22 ± 1.56 | 7.21 ± 1.60 |
All were compared with plan levels.
*P < 0.01, using Wilcoxon signed-rank test.
DTIheart, changes in distance to isocenter of heart; DTIspinal-cord, changes in distance to isocenter of spinal-cord.