Table 4.
Comparison of plan quality for the renormalized plans
| IM | DSS | p-value | |||
| mean | SD | mean | SD | ||
| PTV | |||||
| D95 | 52.6 | 0 | 52.6 | 0.6 | 1.0 |
| D5 | 63.9 | 3.9 | 58.6 | 0.4 | 0.002 |
| V95* | 93.4 | 1.5 | 91.9 | 3.3 | 0.2 |
| V107* | 35.5 | 20.0 | 0.9 | 0.9 | 0.001 |
| left parotid | |||||
| D50 | 20.2 | 2.8 | 22.0 | 1.6 | 0.06 |
| right parotid | |||||
| D50 | 21.7 | 1.6 | 21.9 | 0.9 | 0.6 |
| spinal cord | |||||
| Dmax | 33.1 | 3.1 | 30.5 | 3.2 | 0.02 |
| external | |||||
| Dmax | 68.4 | 5.2 | 62.2 | 1.3 | 0.003 |
| Efficiency | |||||
| # MU | 1233 | 233 | 901 | 160 | 0.003 |
Mean values, standard deviations and p-values for the resulting treatment plans renormalized to a D95 of 52.6 Gy, which is the mean of the D95 of the DSS plans. Dose values are given in Gy, volumes in % of the volume of interest.