Table 1 Comparisons of the absolute and percentage reductions in weekly CTV and GTV
Target volume | Comparison | Absolute reduction (mean + SD, mL) | Percentage reduction (mean, %) | t | P |
|---|---|---|---|---|---|
CTV | CTV0* vs CTV1 | 10.95 ± 1.35 | 1.8 | 8.07 | <0.0001 |
CTV1 vs CTV2 | 10.91 ± 2.18 | 1.8 | 2.18 | <0.0001 | |
CTV2 vs CTV3 | 12.27 ± 3.17 | 2.9 | 5.44 | <0.0001 | |
CTV3 vs CTV4 | 23.63 ± 4.03 | 3.7 | 5.86 | <0.0001 | |
CTV4 vs CTV5 | 13.69 ± 2.12 | 2.2 | 6.46 | <0.0001 | |
GTV | GTV0* vs GTV1 | 8.80 ± 1.25 | 10.3 | 7.05 | <0.0001 |
GTV1 vs GTV2 | 5.98 ± 1.74 | 6.8 | 3.44 | 0.0027 | |
GTV2 vs GTV3 | 8.79 ± 2.14 | 9.9 | 4.10 | 0.0006 | |
GTV3 vs GTV4 | 8.01 ± 2.75 | 10.5 | 2.91 | 0.009 | |
GTV4 vs GTV5 | 6.20 ± 0.93 | 9.1 | 6.63 | <0.0001 |