Table 1.
The number of structures N, the gEUD prediction error (mean ± SD), the p-value of a paired t-test to assess differences between the predicted and planned gEUD, and Pearson’s correlation coefficient r. Results are given for each OAR type and for each cohort.
| Training cohort
|
Validation cohort
|
PBS cohort
|
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|---|---|---|---|---|---|---|---|---|---|
| N | N | Error [Gy] | P | r | N | Error [Gy] | p | r | |
| Brainstem | 20 | 21 | −0.7 ± 4.2 | 0.5 | 79% | 10 | +1.1 ± 2.1 | 0.2 | 36% |
| Cochlea | 40 | 40 | +0.3 ± 4.6 | 0.7 | 95% | 20 | +3.2 ± 4.4 | <0.01 | 97% |
| Optic chiasm | 17 | 20 | +3.8 ± 5.3 | <0.01 | 88% | 5 | +6.3 ± 7.0 | 0.2 | 96% |
| Optic nerve | 36 | 40 | +3.2 ± 5.6 | <0.01 | 85% | 10 | +3.3 ± 3.1 | 0.01 | 93% |
| Parotid | 14 | 18 | −0.1 ± 4.2 | 0.9 | 77% | 10 | +2.1 ± 3.0 | 0.06 | 87% |
| Spinal cord | 10 | 10 | +1.5 ± 4.0 | 0.3 | 92% | 5 | +4.8 ± 2.8 | 0.03 | 97% |
|
| |||||||||
| All OARs | 137 | 149 | +1.4 ± 5.1 | <0.001 | 93% | 60 | +3.1 ± 4.1 | <10−6 | 96% |