Characterization of a scintillating fiber-optic dosimeter for photon beam therapy |
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| Authors: | Kyoung Won Jang Dong Hyun Cho Sang Hun Shin Wook Jae Yoo Jeong Ki Seo Bongsoo Lee Sin Kim Joo Hyun Moon Young-Ho Cho Byung Gi Park |
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| Institution: | (1) Particle Therapy Division, Research Center for Innovative Oncology, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa-shi, Chiba 277-8577, Japan;(2) Department of Radiology, National Cancer Center Hospital East, Chiba 277-8577, Japan;(3) Department of Nuclear Engineering and Management, Graduate School of Engineering, University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan;(4) Department of Radiology, Graduate School of Medicine, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan |
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| Abstract: | Abstact A scintillating fiber-optic dosimeter has many advantages such as real-time readout, high-resolution measurement, water-equivalence
and no corrections for temperature, pressure and humidity. Organic scintillator which has water or tissue equivalent characteristics
is very important to measure absorbed dose, dose rate and dose distributions exactly without any corrections and due to its
small size, the sensitive volume enables accurate dose measurements in regions of high dose gradients with high spatial resolution.
In this study, a scintillating fiber-optic dosimeter with an organic scintillator is fabricated to measure high-energy photon
beam from a clinical linear accelerator. And we have measured linear responses of a fiber-optic dosimeter according to dose
rates and monitor units of a clinical linear accelerator. Also, a percent depth dose curve for 6MV photon beam with different
field sizes are obtained. |
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| Keywords: | organic scintillator fiber-optic dosimeter photon beam radiotherapy |
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