Table 1.
Relative differences between algorithms and grid sizes for lung cancer patients
| |
Relative difference |
p-value |
Relative difference |
p-value |
|---|---|---|---|---|
|
(AXB2.5 -AAA2.5)/ AAA2.5×100% |
|
(AXB1.0 - AXB2.5)/ AXB2.5×100% |
|
|
| Average ± SDV (min-max) | Average ± SDV (min-max) | |||
|
Stage I (N = 8) | ||||
| PTV | ||||
| D98% |
−3.2% ± 4.0% (−12.3% – 0.5%) |
0.06 |
0.7% ± 1.3% (−0.8% – 3.1%) |
0.19 |
| D2% |
0.2% ± 1.2% (−2.1% – 1.3%) |
0.69 |
0.9% ± 0.4% (0.3% – 1.4%) |
<0.01* |
| Dmean |
−0.6% ± 2.2% (−4.9% – 1.6%) |
0.46 |
0.2% ± 0.5% (−0.6% – 1.2%) |
0.45 |
| Total lung | ||||
| V5Gy |
1.3% ± 1.9% (−1.9% –3.2%) |
0.12 |
0.1% ± 0.6% (−0.8% – 1.1%) |
0.73 |
| V20Gy |
2.0% ± 2.3% (0.0% – 5.7%) |
0.05* |
−0.7% ± 1.2% (−2.7% – 0.0%) |
0.17 |
| MLD |
0.0% ± 0.5% (−0.7% – 0.7%) |
0.60 |
0.1% ± 0.2% (0.0% – 0.4%) |
0.08 |
| Time | ||||
| Calculation |
−39.2% ± 13.5% (−50.3% – –8.2%) |
<0.01* |
304.7% ± 48.7% (226.9% – 345.8%) |
<0.01* |
|
Stage III (N = 7) | ||||
| PTV | ||||
| D98% |
−0.3% ± 0.7% (−0.8% – 1.3%) |
0.33 |
0.2% ± 0.8% (−1.4% – 0.9%) |
0.57 |
| D2% |
−0.6% ± 2.0% (−2.1% – 3.0%) |
0.47 |
0.6% ± 0.4% (−0.1% – 1.0%) |
<0.01* |
| Dmean |
−0.8% ± 0.7% (−1.6% – 0.3%) |
0.02* |
0.1% ± 0.3% (−0.5% – 0.4%) |
0.40 |
| Total lung | ||||
| V5Gy |
−1.8% ± 1.7% (−4.8% – 0.3%) |
0.03* |
−0.4% ± 0.7% (−1.5% – 0.4%) |
0.16 |
| V20Gy |
0.2% ± 0.7% (−0.5% – 1.5%) |
0.69 |
0.0% ± 0.0% (0.0% –0.0%) |
1.00 |
| MLD |
−0.5% ± 0.6% (−1.3% – 0.0%) |
0.09 |
0.2% ± 0.3% (0.0% – 0.6% ) |
0.17 |
| Time | ||||
| Calculation | −31.4% ± 9.9% (−44.4% – –17.9%) | <0.01* | 556.9% ± 91.1% (412.3% – 646.0%) | <0.01* |
*Significant relative difference tested by two-tailed student t-test.