A new dosimeter formulation for deformable 3D dose verification

8th International Conference on 3D Radiation Dosimetry

Høye, E.M.^1 ; Skyt, P.S.^1 ; Yates, E.S.^1 ; Muren, L.P.^1 ; Petersen, J.B.B.^1 ; Balling, P.^2

Department of Medical Physics, Aarhus University, Aarhus University Hospital, Denmark^1

Department of Physics and Astronomy, Aarhus University, Denmark^2

关键词: Chemical component;    Dose response;    Dose verification;    Function of time;    Leucomalachite green;    Photon energy;    Standard deviation;    Volumetric modulated arc therapy;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/573/1/012067/pdf
DOI  :  10.1088/1742-6596/573/1/012067

来源: IOP

【 摘 要 】

We present the characteristics of a new silicone-based radiochromic dosimeter containing the leuco-malachite green (LMG) dye. The dose response as well as the dose-rate and photon-energy dependence of the dosimeter were characterized. To optimise the dose response, different concentrations of the chemical components were investigated. The dose response was found to decrease exponentially as a function of time after irradiation. A cylindrical dosimeter was produced and irradiated with a volumetric modulated arc therapy plan; the standard deviation between measured and calculated dose was 5% of the total dose.