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KMID : 0384620080190040285
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Korean Journal of Medical Physics
2008 Volume.19 No. 4 p.285 ~ p.290
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Fabrication and Characterization of a One-dimensional Fiber-optic Dosimeter for Electron Beam Therapy Dosimetry
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Jang Kyoung-Won
Cho Dong-Hyun
Shin Sang-Hun
Yoo Wook-Jae
Jun Jae-Hoon
Lee Bong-Soo
Moon Joo-Hyun
Park Byung-Gi
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Abstract
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In this study, we have fabricated a one-dimensional fiber-optic dosimeter for electron beam therapy dosimetry. Each fiber-optic dosimeter has an organic scintillator with a plastic optical fiber and it is embedded and arrayed in the plastic phantom to measure one-dimensional high energy electron beam profile of clinical linear accelerator. The scintillating lights generated from each sensor probe are guided by plastic optical fibers to the multi-channel photodiode amplifier system. We have measured one-dimensional electron beam profiles in a PMMA phantom according to different field sizes and energies of electron beam. Also, the isodose and three-dimensional percent depth dose curves in a PMMA phantom are obtained using a one-dimensional fiber-optic dosimeter with different electron beam energies.
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KEYWORD
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Dosimeter, Optical fiber, Organic scintillator, Electron beam
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