Table 1.
The PTV Evaluation Parameter.
| PTV/parameter | Dmean (Gy) | D95% (Gy) | V95% (%) | V105% (%) | HI (0-1) | CI (0-1) |
|---|---|---|---|---|---|---|
| CT1 | 36.74 (14.31) | 34.88 (46.99) | 97.38 ± 0.96 | 10.43 (9.23) | 0.12 (0.02) | 0.47 (0.07) |
| FBCT1 | 36.63 (23.73) | 34.54 (44.43)* | 96.25 ± 1.09* | 13.12 (7.65) | 0.14 (0.02)* | 0.44 (0.07)* |
| FBCT2 | 36.60 (19.61)* | 34.54 (40.60)* | 96.33 ± 1.14* | 11.72 (10.61) | 0.14 (0.03)* | 0.43 (0.07)* |
| FBCT3 | 36.61 (23.07)* | 34.53 (32.79)* | 96.41 ± 1.30* | 11.97 (8.13) | 0.14 (0.02)* | 0.43 (0.07)* |
| FBCT4 | 36.64 (23.49) | 34.65 (40.42)* | 96.48 ± 1.48* | 12.28 (8.29) | 0.13 (0.02)* | 0.43 (0.07)* |
| FBCT5 | 36.58 (29.33)* | 34.60 (46.69)* | 96.28 ± 1.34* | 13.24 (8.97) | 0.14 (0.02)* | 0.43 (0.10)* |
| P | .007 | <.001 | <.001 | .07 | <.001 | <.001 |
Note: Abbreviations: PTV, planning tumor volume; FBCT, fan-beam computed tomography; CT, computed tomography.
* represents a statistically significant difference compared to CT1 (P < .05).