Monte Carlo water-equivalence study of two PRESAGE? formulations for proton beam dosimetry

7th International Conference on 3D Radiation Dosimetry

Gorjiara, T.^1 ; Kuncic, Z.^1 ; Adamovics, J.^2 ; Baldock, C.^1,3

Institute of Medical Physics, School of Physics, University of Sydney, NSW 2006, Australia^1

Department of Chemistry and Biology, Rider University, Lawrenceville, NJ 08648, United States^2

Faculty of Science, Macquarie University, NSW 2109, Australia^3

关键词: Clinical proton beams;    Proton beam dosimetry;    Secondary particles;    Total depths;    Water equivalence;    Water equivalent;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/444/1/012090/pdf
DOI  :  10.1088/1742-6596/444/1/012090

来源: IOP

【 摘 要 】

PRESAGE® is a radiochromic solid dosimeter which shows promising potential for 3D proton beam dosimetry. Since an idea dosimeter should be water-equivalent, total depth dose distributions in two PRESAGE® formulations irradiated by a 62 MeV proton beam were compared with that in water using GEANT4 Monte Carlo simulations. The dose delivered by secondary particles was also calculated. Our results show that after water-equivalent depth scaling, PRESAGE® can be considered water equivalent for dosimetry of a 62 MeV clinical proton beam.