EFFECT OF PHOTON ENERGY ON THE RADIATION SENSITIVITY OF HEMA POLYMER GEL DOSIMETER BASED ON NEAR INFRARED EVALUATION
Abstract
This study investigates the photon energy dependence of HEMA polymer gel dosimeters (PGDs) with maltose additive, evaluated using near-infrared (IR) spectrophotometry. Two batches of PGDs with varying maltose concentrations (0–520 mM) were irradiated using 6 MV and 10 MV photon beams. Absorbance-dose response curves were plotted, and sensitivities were compared using regression analysis and ANOVA. Results indicated a significant difference in sensitivity between the two photon energies (p < 0.05), suggesting photon energy dependence in the evaluated HEMA PGDs. These findings emphasize the need for energy-specific calibration when using HEMA PGDs in clinical applications.
References
Alhassan, M., Rahman, A. A., Mustafa, I. S., Zahri, M., Aziz, A., Kassim, M. Z., Abdullah, M. S., Ibrahim, H. A., & Bala, K. A. (2025). A Novel Approach to Evaluating HEMA Polymer Gel Dosimeters Using Molecular Vibrational Features. Pertanika Journal of Science and Technology Sci. & Technol., 33(2), 10491068. DOI: https://doi.org/10.47836/pjst.33.2.23
De Deene, Y. (2022). Radiation Dosimetry by Use of Radiosensitive Hydrogels and Polymers: Mechanisms, State-of-the-Art and Perspective from 3D to 4D. Gels, 8(9), 599. DOI: https://doi.org/10.3390/gels8090599
Deene, Y. De. (2004). Essential characteristics of polymer gel dosimeters. Journal of Physics: Conference Series, 3, 3457. DOI: https://doi.org/10.1088/1742-6596/3/1/006
Deene, Y. De, Vergote, K., Claeys, C., & Wagter, C. De. (2006). The fundamental radiation properties of normoxic polymer gel dosimeters: a comparison between a methacrylic acid based gel and acrylamide based gels. Physics in Medicine and Biology, 51(3), 653673. DOI: https://doi.org/10.1088/0031-9155/51/3/012
Farajollahi, A., Bonnett, D., Ratcliffe, A., Aukett, R., & Mills, J. (1999). An investigation into the use of polymer gel dosimetry in low dose rate brachytherapy. Br. J. Radiol., 72, 10851092. DOI: https://doi.org/10.1259/bjr.72.863.10700826
Farajollahi, A., Pak, F., Horsfield, M., & Myabi, Z. (2014). The basic radiation properties of the N-isopropylacrylamide based polymer gel dosimeter. Int. J. Radiat. Res., 12, 347354.
Mohammad, S., Abtahi, M., Anaraki, V., Farhood, B., & Rabi, S. (2020). Assessment of photon energy and dose rate dependence of U-NIPAM polymer gel dosimeter. Radiation Physics and Chemistry, 172(August 2019), 108784. DOI: https://doi.org/10.1016/j.radphyschem.2020.108784
Muhammad, A., Azhar, A. R., Shahrim, I., Aziz, A., & Zahri, M. (2025). Impact of Maltose Additive on Improving the Radiation Sensitivity of HEMA Polymer Gel Dosimeter for Radiotherapy. Engineering Highway, 15, 7987. DOI: https://doi.org/10.4028/p-xU3Z3U
Rabaeh, K. A., Bani Issa, A. S., Ababneh, A. M., & Eyadeh, M. M. (2024). Enhancement the dosimetric properties of N-(3-methoxypropyl) acrylamide polymer gel dosimeter for cancer treatment. Radiation Physics and Chemistry, 216(August 2023), 111441. DOI: https://doi.org/10.1016/j.radphyschem.2023.111441
Sathiyaraj, P., & Samuel, J. J. (2018). Dose rate and energy dependence study of methacrylic acid gelatin tetrakis (hydroxymethyl) phosphonium chloride gel with flattened and unflattened photon beams. J. Canc. Res. Therapeut, 14, 287291. DOI: https://doi.org/10.4103/0973-1482.191033
Sellakumar, P., & Samuel, E. J. J. (2010). Study on energy dependence of PAGAT polymer gel dosimeter evaluated using X-ray CT. Radiat. Meas., 45, 9297. DOI: https://doi.org/10.1016/j.radmeas.2009.11.003
Copyright (c) 2025 FUDMA JOURNAL OF SCIENCES
This work is licensed under a Creative Commons Attribution 4.0 International License.
FUDMA Journal of Sciences
