Water equivalence of micelle gels for x-ray beams

7th International Conference on 3D Radiation Dosimetry

Gorjiara, T.^1 ; Hill, R.^1,2 ; Kuncic, Z.^1 ; Bosi, S.^1,3 ; Baldock, C.^4

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

Department of Radiation Oncology, Royal Prince Alfred Hospital, Camperdown, NSW 2050, Australia^2

Department of Radiation Oncology, Prince of Wales Hospital, Randwick, NSW 2031, Australia^3

Faculty of Science, Macquarie University, NSW 2109, Australia^4

关键词: Effective atomic number;    Mass attenuation coefficients;    Megavoltage;    Monte Carlo codes;    Radiation dosimeters;    Threedimensional (3-d);    Water equivalence;    Water equivalent;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/444/1/012024/pdf
DOI  :  10.1088/1742-6596/444/1/012024

来源: IOP

【 摘 要 】

Micelle gel is a radiochromic hydrogel with the potential to be used as a three dimensional (3D) radiation dosimeter. Since an ideal dosimeter should present water equivalent properties, in this study the water equivalence of two formulations of micelle gel has been investigated by calculating electron density, effective atomic number, fractional interaction probabilities, mass attenuation coefficient. The depth doses for kilovoltage and megavoltage x-ray beams have also modelled using Monte Carlo code. Based on the results of this work, micelle gels can be considered as water equivalent dosimeters.