ESTRO 2025 - Abstract Book

S3661

Physics - Quality assurance and auditing

ESTRO 2025

Figure 1. PSQA passing rates in relation to changes in DVH parameters, data for the TrueBeam Millennium are represented by circles and TrueBeam HD with triangles. Across the cohort, sensitivity to significant dosimetric impact (as described above) was 0.78 and specificity 0.88. Participants also submitted results for additional, non-clinical PSQA methods with the intention of future implementation or informing current procedures (Figure 2).

Figure 2. Receiver operating characteristic curves with changing gamma pass rate threshold for two centres with multiple submissions. Markers indicate the submitted values.