ESTRO 2024 - Abstract Book

S3227

Physics - Detectors, dose measurement and phantoms

ESTRO 2024

the clinical plans. Furthermore, irradiations of the pelvic plan on Kyoto phantom in G2 led to an increased dose of 39, 7, 26 and 18% in A2, A*2, C2 and D2, respectively. However, this did not result in a significantly elevated dose in A.

The Berthold detector showed an underestimation of the dose when compared to WENDI which was on average - 16%. The DIAMON detectors were on average within 5% agreement with WENDI when using the low energy mode, while it tended to overestimate the dose in the high energy mode. Passive detectors readouts are being processed at the date of submission, but results will soon become available.

Conclusion:

Although site specific, the results confirm the low concern for staff working in modern PT facilities with a calculated staff neutron dose below 5 µSv/year from standard clinical operations. The results also confirm the many reported instances of low monthly readouts in PT centres and would support a less frequent readout of the detectors or even lighter staff monitoring, e.g., for special activities. Furthermore the low radiological impact for the general public, in line with the general perception of PT as a dose reducing treatment modality.

This work is support by the SINFONIA project funded by the Euratom research and training programme 2019-2020 under grant agreement no. 945196.