ESTRO 2025 - Abstract Book

S2614

Physics - Detectors, dose measurement and phantoms

ESTRO 2025

Conclusion: The obtained results indicate that the microDiamond detector, if used in the in-beam orientation with a perpendicular magnetic field exhibits only a marginal magnetic field dependency. The observed signal drift of the microSilicon detector for repeated irradiations seems to discourage a potential use for reference dosimetry. Consequently, for dosimetry in MR guided proton therapy, besides the use of passive detectors, semiconductor detectors are a viable option, paving the way for future basic beam data acquisition, which are key prior clinical implementation of MR-guided proton therapy.

Keywords: proton therapy, magnetic fields, MR-guided PT

References: [1] Fuchs H, Padilla-Cabal F, Zimmermann L, Palmans H, Georg D. MR-guided proton therapy: Impact of magnetic fields on the detector response . Medical Physics. 2021;48(5):2572-2579.