Measurement of entrance surface dose on an anthropomorphic thorax phantom using a miniature fiber-optic dosimeter

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) sy...

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Bibliographic Details
Published inSensors (Basel, Switzerland) Vol. 14; no. 4; pp. 6305 - 6316
Main Authors Yoo, Wook Jae, Shin, Sang Hun, Jeon, Dayeong, Hong, Seunghan, Sim, Hyeok In, Kim, Seon Geun, Jang, Kyoung Won, Cho, Seunghyun, Youn, Won Sik, Lee, Bongsoo
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 01.04.2014
MDPI
Subjects
anthropomorphic thorax phantom
Anthropomorphism
Biomedical engineering
diagnostic radiology
Dosimeters
Dosimetry
Engineering
entrance surface dose
Fiber Optic Technology - instrumentation
Fiber optics
fiber-optic dosimeter
Humans
Image detection
Miniature
Optical fibers
Optics
Phantoms, Imaging
Photonics
Photons
R&D
Radiation therapy
Radiographic Image Enhancement
Radiography
Radiography, Thoracic
Radiometry
Research & development
scintillating light
Semiconductors
Sensors
Signal Processing, Computer-Assisted
Surface Properties
Thorax
Thorax - anatomy & histology
Japan
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Summary: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.
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ISSN:1424-8220
1424-8220
DOI:10.3390/s140406305