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http://dx.doi.org/10.7742/jksr.2020.14.5.517

A Study on the Application of PbI2 Dosimetry for QA in the Electron Beam Therapy  

Yang, Seungwoo (Department of Radiation Oncology, Collage of Medicine, Inje University)
Han, Moojae (Department of Radiation Oncology, Collage of Medicine, Inje University)
Jung, Jaehoon (Department of Radiation Oncology, Collage of Medicine, Inje University)
Choi, Yunseon (Department of Radiation Oncology, Busan Paik Hospital, Inje University)
Cho, Heunglae (Department of Radiation Oncology, Busan Paik Hospital, Inje University)
Park, Sungkwang (Department of Radiation Oncology, Busan Paik Hospital, Inje University)
Publication Information
Journal of the Korean Society of Radiology / v.14, no.5, 2020 , pp. 517-522 More about this Journal
Abstract
Electron beam have many factors that affect dose distribution, so even if identical settings are used, they should be identified and used for radiation treatment, and the effects on the structures in the body are sensitive, making it difficult to investigate uniform dose distribution on tumors. In this study, a dosimeter was produced using PbI2 which is a photoelectric material, and electrical characteristics were analyzed for 6, 9, and 12 MeV electronics in linear accelerators. The reproducibility test results showed that RSD were 1.1215%, 1.0160%, and 0.05137% respectively at 6, 9, and 12 MeV energies, indicating that the output signals were stable. The linearity evaluation results showed that the R2 values of the reliability indicator for straight line trend lines were 0.9999, 0.9999, and 0.9994, respectively, at 6, 9, and 12 MeV, to confirm that the output signal was proportional to PbI2 as dose increased. The PbI2 dosimeter in this study is judged to be highly applicable to electromagnet measurement and is thought to be able to be used as a basic study of electron detector through photoelectric material.
Keywords
Radiation therapy; Electron; Detector; Semi-conductive compound; Lead Iodide;
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Times Cited By KSCI : 4  (Citation Analysis)
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