Table 2 Population systematic (Σ) and random (σ) errors of selected contemporary series and correlation with probability of target volume coverage
Series | Σ | σ | Displacements or errors |
|---|---|---|---|
Hess [10] | Not reported | Not reported | 3 mm for 50% coverage |
9 mm for 95% coverage | |||
Bentel [11] | Not reported | Not reported | 5–10 mm (87–90% with 5 mm margin) |
Gibeau [12] | 1 – 2.2 | 0.7 – 2.3 | 4.5–5.5 mm for 90%probability of target coverage |
De Boer [13] | 1.5 – 2.0 | 1.5 – 2.0 | Probability values not specified |
Humphrey [14] | 0.02 – 0.9 | 0.4 – 0.7 | 3 mm for 95% of the errors. |
5 mm for 99% of errors | |||
Zhang [15] | 1.5 – 3.2 | 1.1 – 2.9 | 5.5 mm for 90% probability of target coverage |
Suzuki [16] | 0.7 – 1.3 | 0.7 – 1.6 | 5 mm margin for PTV and 3 mm for PRV |
Probability values not specified | |||
Present Study | 0.96 – 1.2 | 1.94 – 2.48 | 93% displacements within 5 mm |
<5 mm CTV-PTV margin in all directions |