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1.
Korean Journal of Medical Physics ; : 29-34, 2010.
Article Dans Coréen | WPRIM | ID: wpr-30107

Résumé

In this study, we have fabricated a fiber-optic dosimeter for a proton beam therapy dosimetry. We have measured scintillating lights with the various kinds of organic scintillators and selected the BCF-12 as a sensor-tip material due to its highest light output and peak/plateau ratio. To determine the optimum diameter of BCF-12, we have measured scintillating lights according to the energy losses of proton beams in a water phantom. Also, we determined the adequate length of organic scintillator by measuring scintillating lights according to the incident angles of proton beam. Using an optimized fiber-optic dosimeter, we have measured scintillating lights according to the dose rates and monitor units of proton accelerator.


Sujets)
Lumière , Fibres optiques , Composés organothiophosphorés , Protonthérapie , Protons , Eau
2.
Korean Journal of Medical Physics ; : 285-290, 2008.
Article Dans Coréen | WPRIM | ID: wpr-93129

Résumé

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.


Sujets)
Électrons , Lumière , Fibres optiques , Accélérateurs de particules , Matières plastiques , Poly(méthacrylate de méthyle)
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