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Sensors 2014, 14(4), 6305-6316; doi:10.3390/s140406305

Measurement of Entrance Surface Dose on an Anthropomorphic Thorax Phantom Using a Miniature Fiber-Optic Dosimeter

1
School of Biomedical Engineering, College of Biomedical & Health Science, Research Institute of Biomedical Engineering, Konkuk University, 268 Chungwon-daero, Chungju-si, Chungcheongbuk-do, 380-701, Korea
2
Department of Organic Materials & Fiber Engineering, College of Engineering, Soongsil University, 369 Sangdo-ro, Dongjak-gu, Seoul-si, 156-743, Korea
3
Research & Development Center, JPI Healthcare, Osongsaengmyeong 1-ro, Osong-eup, Cheongwon-gun, Chungcheongbuk-do, 363-951, Korea
*
Author to whom correspondence should be addressed.
Received: 24 December 2013 / Revised: 26 March 2014 / Accepted: 27 March 2014 / Published: 1 April 2014
(This article belongs to the Special Issue Photonic Sensors for Industrial, Environmental and Health Monitoring)
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Abstract

A miniature fiber-optic dosimeter (FOD) system was fabricated using a plastic scintillating fiber, a plastic optical fiber, and a multi-pixel photon counter to measure real-time entrance surface dose (ESD) during radiation diagnosis. Under varying exposure parameters of a digital radiography (DR) system, we measured the scintillating light related to the ESD using the sensing probe of the FOD, which was placed at the center of the beam field on an anthropomorphic thorax phantom. Also, we obtained DR images using a flat panel detector of the DR system to evaluate the effects of the dosimeter on image artifacts during posteroanterior (PA) chest radiography. From the experimental results, the scintillation output signals of the FOD were similar to the ESDs including backscatter simultaneously obtained using a semiconductor dosimeter. We demonstrated that the proposed miniature FOD can be used to measure real-time ESDs with minimization of DR image artifacts in the X-ray energy range of diagnostic radiology.
Keywords: fiber-optic dosimeter; entrance surface dose; diagnostic radiology; scintillating light; anthropomorphic thorax phantom fiber-optic dosimeter; entrance surface dose; diagnostic radiology; scintillating light; anthropomorphic thorax phantom
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Yoo, W.J.; Shin, S.H.; Jeon, D.; Hong, S.; Sim, H.I.; Kim, S.G.; Jang, K.W.; Cho, S.; Youn, W.S.; Lee, B. Measurement of Entrance Surface Dose on an Anthropomorphic Thorax Phantom Using a Miniature Fiber-Optic Dosimeter. Sensors 2014, 14, 6305-6316.

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