|  | IMRT (cm3) | VMAT (cm3) | p value |
---|---|---|---|---|
MLC | 2.5-mm MLC | 455.84 ± 316.45 | 466.10 ± 288.69 | 0.875 |
5.0-mm MLC | 465.76 ± 315.02 | 466.78 ± 276.48 | 0.875 | |
Target shapes | Type 1 | 315.33 ± 216.79 | 380.36 ± 257.99 | 0.075 |
Type 2 | 439.84 ± 287.24 | 470.90 ± 290.22 | 0.173 | |
Type 3 | 551.47 ± 368.23 | 514.65 ± 305.96 | 0.249 | |
Type 4 | 536.55 ± 361.91 | 499.86 ± 296.27 | 0.249 | |
Overall |  | 460.80 ± 308.84 | 466.44 ± 273.95 | 1.000 |