The Influences of an Embedded Structure Fiber-Optic Radiation Dosimeter in Different SSD and Beam Field Size

• 作者: Boran Wang Chuntong Jiang Daxin Zhang Elfed Lewis He Tian Tianci Xie Weimin Sun Wenhui Zhao Yaosheng Hu Yu Ma Zhuang Qin Ziyin Chen
• 来源期刊: 光学与光子学期刊(英文)
• 学科: 医学
• 关键词: Optical Fiber SENSING Radiation SSD (Source to Surface Distance) BEAM FIELD SIZE
• 年，卷（期）: 2017,（8）
• 页码范围: 75-80
• 页数: 6页
• 分类号: R73

摘要

With a rapidly increasing demand and widespread use of radiotherapy treatment, the subject area of in-vivo real time dose rate dosimeters has become a significant area of study. An embedded structure fiber-optic radiation dosimeter has proved to be a promising candidate to fulfil this role because of its high SNR (signal-to-noise ratio) and excellent light conversion efficiency. In this paper, the properties of this kind of dosimeter with respect to different SSD (Source to Surface Distance) and beam field size in a clinical Linac are studied. The characteristics of the dosimeter were evaluated by the sensor’s output intensity response in these conditions.