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Water-equivalent fiber radiation dosimeter with two scintillating materials

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posted on 2017-11-13, 12:49 authored by Zhuang Qin, Yaosheng Hu, Yu Ma, Wei Lin, Xianping Luo, Wenhui Zhao, Weimin Sun, Daxin Zhang, Ziyin Chen, Boran Wang, ELFED LEWISELFED LEWIS
An inorganic scintillating material plastic optical fiber (POF) dosimeter for measuring ionizing radiation during radiotherapy applications is reported. It is necessary that an ideal dosimeter exhibits many desirable qualities, including water equivalence, energy independence, reproducibility, dose linearity. There has been much recent research concerning inorganic dosimeters. However, little reference has been made to date of the depth-dose characteristics of dosimeter materials. In the case of inorganic scintillating materials, they are predominantly non water-equivalent, with their effective atomic weight (Z(eff)) being typically much greater than that of water. This has been a barrier in preventing inorganic scintillating material dosimeter from being used in actual clinical applications. In this paper, we propose a parallel-paired fiber light guide structure to solve this problem. Two different inorganic scintillating materials are embedded separately in the parallel-paired fiber. It is shown that the information of water depth and absorbed dose at the point of measurement can be extracted by utilizing their different depth-dose properties. (C) 2016 Optical Society of America

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Publication

Biomedical Optics Express;

Note

peer-reviewed

Other Funding information

International Science & Technology Cooperation Program of China, Joint Research Fund in Astronomy

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© 2016 Optical Society of America]. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved.

Language

English

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