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

Sensors

Wook Jae Yoo²  Sang Hun Shin²  Dayeong Jeon²  Seunghan Hong²  Hyeok In Sim²  Seon Geun Kim²  Kyoung Won Jang²  Seunghyun Cho³  Won Sik Youn¹ 

[1] Research & Development Center, JPI Healthcare, Osongsaengmyeong 1-ro, Osong-eup, Cheongwon-gun, Chungcheongbuk-do, 363-951, Korea; E-Mail:;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; E-Mails:;Department of Organic Materials & Fiber Engineering, College of Engineering, Soongsil University, 369 Sangdo-ro, Dongjak-gu, Seoul-si, 156-743, Korea; E-Mail:

关键词: fiber-optic dosimeter;    entrance surface dose;    diagnostic radiology;    scintillating light;    anthropomorphic thorax phantom;   

DOI  :  10.3390/s140406305

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.