ESTRO 2025 - Abstract Book

S3585

Physics - Quality assurance and auditing

ESTRO 2025

Figure1: Mean Error over the PTV for the clincal sCT against CT and 3 sCT. Patient number is displayed for outliers.

Figure 2: Gamma pass rate (bottom) for the clincal sCT against CT and 3 sCT. Patient number is displayed for outliers.

Conclusion: PSQA of a sCT against another should be performed with great care because of reconstruction differences, especially in the sine region characterized by its heterogeneities. The study is currently being extended to 52 pelvis patients.

Keywords: synthetic CT, quality assurance

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