ESTRO 2024 - Abstract Book

S4734

Physics - Quality assurance and auditing

ESTRO 2024

Results:

Figure 2 shows the results of all off-axis WL-E2E tests. An average maximum deviation of 0.84 mm (range: 0.53 mm to 1.07 mm) was found. Deviations smaller than 1 mm were obtained for the remaining metrics. Observer variability was estimated at 0.2 mm (SD).

The maximum deviation obtained for the 10 isocentric E2E tests was 0.66 mm ± 0.07 mm (mean ± SD). The mean maximum deviation for the off-axis E2E tests was 0.18 mm greater than the isocentric test.