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Measurement of Two-Dimensional Photon Beam Distributions Using a Fiber-Optic Radiation Sensor for Small Field Radiation Therapy

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12 Author(s)
Bongsoo Lee ; Sch. of Biomed. Eng., Konkuk Univ., Chungju ; Kyoung Won Jang ; Dong Hyun Cho ; Wook Jae Yoo
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In this study, we fabricated a fiber-optic radiation sensor with an organic scintillator to measure the high-energy photon beam from a clinical linear accelerator, and a two-dimensional fiber-optic sensor array to measure high-resolution and real-time dose distributions for small field radiotherapy dosimetry. The scintillating lights generated from each organic sensor probe embedded and arrayed in a water phantom are guided by 10 m plastic optical fibers to the light-measuring device. Two-dimensional photon beam distributions in a water phantom were measured for photon beams with different energies and field sizes. Also, percent depth dose curves for 6 and 15 MV photon beams were obtained.

Published in:

IEEE Transactions on Nuclear Science  (Volume:55 ,  Issue: 5 )