Browse > Article
http://dx.doi.org/10.7742/jksr.2021.15.6.789

The Study on Applicability of Manufactured Lead(II) Iodide Dosimeter for Dose Measurement in Brachytherapy  

Yang, Seung-Woo (Department of Radiation Oncology, Collage of Medicine, Inje University)
Han, Moo-Jae (Department of Radiation Oncology, Collage of Medicine, Inje University)
Park, Sung-Kwang (Department of Radiation Oncology, Busan Paik Hospital, Inje University)
Publication Information
Journal of the Korean Society of Radiology / v.15, no.6, 2021 , pp. 789-794 More about this Journal
Abstract
Brachytherapy is a treatment in which radioactive isotopes are placed inside the body to intensively irradiate the tumor with radiation. Because brachytherapy uses a radioisotope source with a high dose rate, it is very important to know the exact location and dose of the source. However, in clinical practice, it is evaluated inaccurately with the naked eye through rulers and autoradiographs. Therefore, in this study, a dosimeter that can be used for brachytherapy was developed using a lead(II) iodide (PbI2) material, and the applicability was evaluated by analyzing the reproducibility, linearity, and PID items. As a result of reproducibility evaluation, the RSD value was 1.41%, satisfying the evaluation criteria of 1.5%. As a result of the linearity evaluation, the R2 value was 0.9993, which satisfies the evaluation criterion of 0.9990. As a result of PID evaluation, it showed only a difference of 0.06 cm compared with the theoretical value of the inverse square law of distance at the 50% dose reduction point. The dosimeter manufactured in this experiment shows results that satisfy the standard in all evaluations, so it is judged that the possibility of applying the dosimeter in the radiation brachytherapy area is sufficient.
Keywords
brachytherapy; dosimeter; quality assurance; lead(II) iodide;
Citations & Related Records
연도 인용수 순위
  • Reference
1 K. T. Kim, Y. J. Heo, M. J. Han, K. M. Oh, Y. K. Lee, S. W. Kim, and S. K. Park. "Development and Evaluation of Multi-Energy Pbo Dosimeter for Quality Assurance of Image-Guide Radiation Therapy Devices", Journal of Instrumentation 12, Vol. 12, No. 4, pp. 04024, 2017. https://doi.org/10.1088/1748-0221/12/04/c04024   DOI
2 N. Vicoroski, A. Espinoza, M. Duncan, B. M. Oborn, M. Carolan, P. Metcalfe, D. Menichelli, V. L Perevertaylo, M. LF Lerch, A. B. Rosenfeld, "Development of a Silicon Diode Detector for Skin Dosimetry in Radiotherapy", Medical physics, Vol. 44, No. 10, pp. 5402-5412, 2017. https://doi.org/10.1002/mp.12469   DOI
3 G. P. Glasgow, J. D. Bourland, P. W. Grigsby, J. A. Meil, K. A. Weaver, "Remote afterloading technology, a report of the AAPM Radiation Therapy Committee Task Group No. 41.", New York: American Institute of Physics, 1993. https://doi.org/10.37206/40
4 F. M. khan, J. P. Gibbons, Khan's the physics of radiation therapy, Lippincott Williams & WilKins, 2014.
5 H. D. Kudo, G. P. Glasgow, T. D. Pethel, B. R. Thomadsen and J. J. Williamson, "High dose-rate brachytherapy treatment delivery: report of the AAPM Radiation Therapy Committee Task Group No. 59", Medical physics, Vol. 25, No. 4, pp. 375-403, 1998. https://doi.org/10.1118/1.598232   DOI
6 G. J. Kutcher, L. Coia, M. Gillin, W. F. Hanson, S. Leibel, R. J. Morton, J. R. Palta, J. A. Purdy, L. E. Reinstein, and G. K. Svensson, "Comprehensive QA for radiation oncology: report of AAPM radiation therapy committee task group 40", Medical physics, Vol. 21, No. 4, pp. 581-618, 1994. https://doi.org/10.1118/1.597316   DOI
7 D. Wilkinson, "High dose rate (HDR) brachytherapy quality assurance: a practical guide", Biomedical Imaging and Intervention Journal, Vol. 2, No. 2, pp. 34, 2006. https://doi.org/10.2349/biij.2.2.e34   DOI
8 L. A. R. da Rosa, D. F. Regulla, U. A. Fill, "Reproducibility study of TLD-100 micro-cubes at radiotherapy dose level", Applied radiation and isotopes, Vol. 50, No. 3, pp. 573-577, 1999. https://doi.org/10.1016/s0969-8043(98)00068-2   DOI
9 R. J. Shalek, "Determination of absorbed dose in a patient irradiated by beams of X or gamma rays in radiotherapy procedures", Wiley Online Library, 1977.
10 M. J. Han, S. W. Yang, J. H. Jung, S. U. Heo, J. Y. Kim, S. J. Cho, H. L. Cho, and S. K. Park. "Evaluation of the Electrical Properties of a Lead (Ii) Iodide Based-Dosimeter Based on Mechanical Flexibility for Surface Dose Measurements in Radiotherapy." Journal of Instrumentation, Vol. 15, No. 8, pp. 08008, 2020. https://doi.org/10.1088/1748-0221/15/08/p08008   DOI