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Mean and standard deviation of overall, systematic, and random setup errors at portal images during the treatment (n = 456)
| Distribution of displacements (1 SD, mm) | ||||
|---|---|---|---|---|
| Overall displacement | Overall | Systematic | Random | |
| (mm) | (n = 456) | (n = 16) | (n = 456) | |
| Mediolateral | 0.3 | 0.9 | 0.7 | 0.5 |
| Anteroposterior | -0.2 | 1 | 0.8 | 0.6 |
| Craniocaudal | 0.2 | 1.1 | 0.9 | 0.7 |
SD, standard deviation
