Dosimetry of Strontium eye applicator: Comparison of Monte Carlo calculations and radiochromic film measurements

8th International Conference on 3D Radiation Dosimetry

Laoues, M.^1,2 ; Khelifi, R.^2 ; Moussa, A.S.^1,2

Laboratory of Nuclear Science and Radiation -Matter Interactions (USTHB), El Alia, Bab Ezzouar, Algiers

16111, Algeria^1

Laboratory of Theoretical Physics and Radiation-Matter Interactions (USDB), Somaa, Blida

09000, Algeria^2

关键词: Average energy;    Different shapes;    Dose distributions;    Dosimetric parameter;    Measured results;    Monte Carlo calculation;    Radiochromic film;    Strontium-90;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/573/1/012072/pdf
DOI  :  10.1088/1742-6596/573/1/012072

来源: IOP

【 摘 要 】

Strontium-90 eye applicators are a beta-ray emitter with a relatively high-energy (maximum energy about 2.28 MeV and average energy about 0.9 MeV). These applicators come in different shapes and dimensions; they are used for the treatment of eye diseases. Whenever, radiation is used in treatment, dosimetry is essential. However, knowledge of the exact dose distribution is a critical decision-making to the outcome of the treatment. The main aim of our study is to simulate the dosimetry of the SIA.20 eye applicator with Monte Carlo GATE 6.1 platform and to compare the calculated results with those measured with EBT2 films. This means that GATE and EBT2 were used to quantify the surface and depths dose- rate, the relative dose profile and the dosimetric parameters in according to international recommendations. Calculated and measured results are in good agreement and they are consistent with the ICRU and NCS recommendations.