Table 2.
Averaged over 28 patients DVH parameters, homogeneity, uniformity indices for the PTVs and OAR DVH parameters with p- and t- values for comparison.
| Parameters | 6 FF-Plan | 6 FFF-Plan | p | t | Δ(%) | |
|---|---|---|---|---|---|---|
| PTVs dose | PTV1-D2%(cGy) | 6416.3±93.0 | 6420.4±78.7 | 0.578 | -0.56 | 0.08% |
| PTV1-D98%(cGy) | 5933.0±102.5 | 5925.1±104.5 | 0.478 | 0.72 | -0.13% | |
| PTV1-V95 (%) | 99.7±0.5 | 99.6±0.5 | 0.619 | -0.50 | -0.1% | |
| PTV1-V100 (%) | 95.95±2.9 | 95.8±3.0 | 0.655 | 0.45 | -0.15% | |
| HI | 1.06±0.02 | 1.060±0.02 | 0.475 | -0.72 | 0.14% | |
| CI95% | 0.453±0.13 | 0.451±0.12 | 0.566 | 0.58 | -0.43% | |
| PTV2-D98% (cGy) | 4917.5±133.44 | 4869.3±138.1 | 0.015 | 2.60 | -0.98% | |
| PTV2-V95 (%) | 98.94±0.7 | 98.7±0.9 | 0.088 | 1.77 | -0.24% | |
| PTV2-V100 (%) | 96.8±2.0 | 96.1±2.2 | 0.008 | 2.88 | -0.7% | |
| CI95% | 0.618±0.05 | 0.643±0.05 | 0.000 | -4.99 | 3.98% | |
| OARs dose | Bilateral lung | |||||
| V30Gy(%) | 12.4±4.1 | 11.7±3.5 | 0.008 | 2.85 | -0.64% | |
| V20Gy(%) | 24.8±7.6 | 24.3±6.5 | 0.240 | 1.20 | -0.5% | |
| V10Gy(%) | 52.3±14.3 | 52.4±14.0 | 0.883 | -0.15 | 0.16% | |
| Heart | ||||||
| V40Gy(%) | 12.1±9.4 | 10.6±8.8 | 0.008 | 2.88 | -1.48% | |
| V30Gy(%) | 25.3±19.4 | 23.1±18.3 | 0.013 | 2.67 | -2.16% | |
| Dmean(cGy) | 1901.8±1010.9 | 1840.6±1015.6 | 0.008 | 2.85 | -3.22% | |
| Spinal cord | ||||||
| D1cc(cGy) | 4217.9±238.8 | 4210.7±221.5 | 0.638 | 0.48 | -0.17% | |
| Peripheral doses volume | V45Gy(cc) | 789±440 | 738±414 | 0.000 | 4.77 | -6.46% |
| V30Gy(cc) | 1984±804 | 1822±718 | 0.000 | 4.48 | -8.18% | |
| V20Gy(cc) | 3510±1213 | 3355±1129 | 0.000 | 4.28 | -4.40% | |
| Delivery efficiency | MUs | 594.5.19±150.5 | 724.2±191.3 | 0.000 | -7.87 | 21.83% |
| Time | 109.1±12.8 | 96.1±9.93 | 0.000 | 10.58 | -11.9% | |
| Mean Dose Rate | 323.3±47.72 | 424.5±82.5 | 0.000 | -10.4 | 31.3% |