Development of a fibre-optic dosemeter to measure the skin dose and percentage depth dose in thebuild-up region of therapeutic photon beams
| Autor: | Dayeong Jeon, Wook Jae Yoo, Eun-Jong Cha, Jang-Yeon Park, Ki-Tek Han, Bongsoo Lee, Jinsoo Moon, Kyoung-Won Jang, Kyung Ah Kim |
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| Rok vydání: | 2012 |
| Předmět: |
Photomultiplier
Optical fiber Materials science Light Electrons Scintillator Electrometer Imaging phantom law.invention Optics law Fiber Optic Technology Humans Dosimetry Radiology Nuclear Medicine and imaging Radiometry Image resolution Optical Fibers Skin Photons Radiation Radiotherapy Radiological and Ultrasound Technology Phantoms Imaging business.industry Public Health Environmental and Occupational Health Radiotherapy Dosage Equipment Design General Medicine Mockup Calibration Scintillation Counting business |
| Zdroj: | Radiation Protection Dosimetry. 153:294-299 |
| ISSN: | 1742-3406 0144-8420 |
| DOI: | 10.1093/rpd/ncs113 |
| Popis: | In this study, a fibre-optic dosemeter (FOD) using an organic scintillator with a diameter of 0.5 mm for photon-beam therapy dosimetry was fabricated. The fabricated dosemeter has many advantages, including water equivalence, high spatial resolution, remote sensing and real-time measurement. The scintillating light generated from an organic-dosemeter probe embedded in a solid-water stack phantom is guided to a photomultiplier tube and an electrometer via 20 m of plastic optical fibre. Using this FOD, the skin dose and the percentage depth dose in the build-up region according to the depths of a solid-water stack phantom are measured with 6- and 15-MV photon-beam energies with field sizes of 10 × 10 and 20 × 20 cm(2), respectively. The results are compared with those measured using conventional dosimetry films. It is expected that the proposed FOD can be effectively used in radiotherapy dosimetry for accurate measurement of the skin dose and the depth dose distribution in the build-up region due to its high spatial resolution. |
| Databáze: | OpenAIRE |
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