title: Water-equivalent fiber radiation dosimeter with two scintillating materials.
abstract: 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 (Zeff) 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.
authors.affiliation: Key Lab of In-fiber Integrated Optics, Ministry Education of China, Harbin Engineering University, Harbin 150001, China.
authors.forename: Zhuang
authors.initials: Z
authors.lastname: Qin
authors.affiliation: Key Lab of In-fiber Integrated Optics, Ministry Education of China, Harbin Engineering University, Harbin 150001, China.
authors.forename: Yaosheng
authors.initials: Y
authors.lastname: Hu
authors.affiliation: Key Lab of In-fiber Integrated Optics, Ministry Education of China, Harbin Engineering University, Harbin 150001, China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Ma
authors.affiliation: Key Lab of In-fiber Integrated Optics, Ministry Education of China, Harbin Engineering University, Harbin 150001, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Lin
authors.affiliation: Key Lab of In-fiber Integrated Optics, Ministry Education of China, Harbin Engineering University, Harbin 150001, China.
authors.forename: Xianping
authors.initials: X
authors.lastname: Luo
authors.affiliation: Key Lab of In-fiber Integrated Optics, Ministry Education of China, Harbin Engineering University, Harbin 150001, China.
authors.forename: Wenhui
authors.initials: W
authors.lastname: Zhao
authors.affiliation: Key Lab of In-fiber Integrated Optics, Ministry Education of China, Harbin Engineering University, Harbin 150001, China.
authors.forename: Weimin
authors.initials: W
authors.lastname: Sun
authors.affiliation: Comprehensive Cancer Center, First Affiliated Hospital of Harbin Medical University, Harbin 150001, China.
authors.forename: Daxin
authors.initials: D
authors.lastname: Zhang
authors.affiliation: Comprehensive Cancer Center, First Affiliated Hospital of Harbin Medical University, Harbin 150001, China.
authors.forename: Ziyin
authors.initials: Z
authors.lastname: Chen
authors.affiliation: Harbin YIAOMI Technology Development Co., Ltd, Harbin 150001, China.
authors.forename: Boran
authors.initials: B
authors.lastname: Wang
authors.affiliation: Optical Fibre Sensors Research Centre, University of Limerick, Castletroy, Limerick, Ireland.
authors.forename: Elfed
authors.initials: E
authors.lastname: Lewis
keywords: (060.2370) Fiber optics sensors; (280.4788) Optical sensing and sensors; (350.5610) Radiation