Table 4.
Dose-spillage volumes normalized to target volume, along with their P values comparing for different multileaf collimator and beam type using analytical anisotropic algorithm, Acuros XB calculation for Clinac-iX (6 MV) and TB-STx (6MV_filtered beam and 6MV_falttening filter-free beam), respectively
| Dose spillage volume | Millennium-120 (FB) | P | HD-120 (FB) | P | HD-120 (FFFB) | P | AAA P Mill versus HD |
AXB P Mill versus HD |
AAA P FB versus FFFB |
AXB P FB versus FFFB |
|||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AAA | AXB | AAA | AXB | AAA | AXB | ||||||||
| VHS | 0.11±0.05 | 0.09±0.04 | 0.004 | 0.11±0.06 | 0.08±0.04 | 0.028 | 0.10±0.06 | 0.06±0.04 | 0.007 | 0.828 | 0.034 | 0.485 | 0.327 |
| VIS | 2.54±1.03 | 2.44±0.99 | 0.005 | 2.46±1.09 | 2.27±0.99 | 0.010 | 2.44±1.08 | 2.22±0.98 | 0.011 | 0.171 | 0.021 | 0.653 | 0.357 |
| VLS | 12.91±4.51 | 11.84±4.34 | 0.019 | 11.53±4.63 | 10.95±4.36 | 0.016 | 11.61±4.59 | 10.97±4.36 | 0.019 | 0.026 | 0.010 | 0.535 | 0.904 |
FB: Filtered beam, FFFB: Flattening filter-free beam, AAA: Analytical anisotropic algorithm, AXB: Acuros XB, HD: High definition