ESTRO 2024 - Abstract Book

S3203

Physics - Detectors, dose measurement and phantoms

ESTRO 2024

Finally, the comparison of IR-ISD data with the TG-43 reference dataset shows that corrected measurements agreed with simulation data within 0.9% and 1.2% and can be validated for the source-to-detector distance greater than 0.20 cm within the limit of positional uncertainty (<1%).

Conclusion:

The proposed micro-dosimetry system requires no Cerenkov corrections, thus it is anticipated that the system could be promoted to validate with direct clinical investigations, such as real-time high and low gradient dose verification, in-vivo source tracking, intra-beam measurements with high spatial resolution, etc. The results suggested that it can be an efficient dose verification technique with accurate dwell time estimation to ensure quality assurance in BT treatment.

Keywords: Inorganic Detector, Dwell Time, In-vivo dosimetry

References:

[1] Kertzscher, G., and S. Beddar. "Inorganic scintillator detectors for real-time verification during brachytherapy." Journal of Physics: Conference Series. Vol. 847. No. 1. IOP Publishing, 2017.

[2] Debnath, Sree Bash Chandra, et al. "High spatial resolution inorganic scintillator detector for high ‐ energy X ‐ ray beam at small field irradiation." Medical Physics 47.3 (2020): 1364-1371.

[3] Beaulieu, Luc, and Sam Beddar. "Review of plastic and liquid scintillation dosimetry for photon, electron, and proton therapy." Physics in Medicine & Biology 61.20 (2016): R305.

568

Proffered Paper

A Fibre Optic Beam Profile and Dose Monitor for Ultrahigh Dose Rate (FLASH) Beams

Joseph J Bateman 1 , Emma Buchanan 2 , Roberto Corsini 3 , Wilfrid Farabolini 3 , Pierre Korysko 1,3 , Robert Larsen 2,4 , Alexander Malyzhenkov 3 , Iñaki Ortega Ruiz 2 , Vilde Rieker 3,5 , Cameron Robertson 1 , Alexander Gerbershagen 6 , Manjit Dosanjh 1,3 1 University of Oxford, Department of Physics, Oxford, United Kingdom. 2 CERN, SYS-BI, Geneva, Switzerland. 3 CERN, BE-ABP, Geneva, Switzerland. 4 University of Groningen, PARTREC, Groningen, Netherlands. 5 University of Oslo, Department of Physics, Oslo, Norway. 6 University of Groningen, Particle Therapy Research Center (PARTREC), Department of Radiation Oncology, University Medical Center Groningen, Groningen, Netherlands

Purpose/Objective: