Optical Review

, Volume 26, Issue 4, pp 391–395 | Cite as

Scintillating fiber phantom dosimeter to measure real-time dose distribution of Co-60 teletherapy source

  • Hyun Young Shin
  • Sang Hun Shin
  • Si Won Song
  • Seunghyun Cho
  • Bongsoo LeeEmail author
Special Section: Regular Paper The 11th International Conference on Optics-Photonics Design & Fabrication (ODF’18), Hiroshima, Japan
Part of the following topical collections:
  1. The 11th International Conference on Optics-Photonics Design & Fabrication (ODF’18), Hiroshima, Japan


In this study, we developed a scintillating fiber phantom dosimeter (SFPD) that can measure the transverse and longitudinal dose distributions of a Co-60 teletherapy source. The SFPD system is composed of organic scintillating fibers, polymethyl methacrylate (PMMA) phantoms, and a complementary metal–oxide–semiconductor (CMOS) sensor camera. When the phantom dosimeter is irradiated with gamma rays from a Co-60 teletherapy source, scintillating lights are emitted from the scintillating fibers inserted in the phantom dosimeter. The scintillating images are measured using a CMOS camera in real time and analyzed using an image processing program. The proposed phantom dosimeter has many advantages such as real-time measurement, easy calibration, and immunity to electromagnetic interference. In addition, it can measure complex dose distributions more precisely, because it has a high spatial resolution due to the small size of organic scintillating fibers. To evaluate the performance of the proposed phantom dosimeter, transverse and longitudinal dose distributions are measured using the CMOS sensor camera. Dose distributions are measured according to the field sizes and compared to the results obtained using an EBT3 film and MCNPX calculations.


Scintillating fiber Phantom dosimeter CMOS sensor camera Co-60 teletherapy source Dose distribution 



This research was supported by the National Research Foundation (NRF) of Korea and grant funded by the Korean government (MSIT) (No. 2017R1A2B2009480). This research was also supported by the Chung-Ang University Graduate Research Scholarship in 2018.


  1. 1.
    Rice, R.K., Hansen, J.L., Svensson, G.K., Siddon, R.L.: Measurements of dose distributions in small beams of 6 MV X-rays. Phys. Med. Biol. 32, 1087–1099 (1987)CrossRefGoogle Scholar
  2. 2.
    McCabe, B.P., Speidel, M.A., Pike, T.L., Van Lysel, M.S.: Calibration of GafChromic XR-RV3 radiochromic film for skin dose measurement using standardized X-ray spectra and a commercial flatbed scanner. Med. Phys. 38, 1919–1930 (2011)CrossRefGoogle Scholar
  3. 3.
    Jeon, H., Yoo, W.J., Shin, S.H., Kwon, G., Kim, M., Kim, H.J., Song, W.B., Jang, K.W., Youn, W.S., Lee, B.: Performance evaluation of a multichannel all-in-one phantom dosimeter for dose measurement of diagnostic X-ray beam. Sensors 15, 28490–28501 (2015)CrossRefGoogle Scholar
  4. 4.
    Devic, S., Seuntjens, J., Abdel-Rahman, W., Evans, M., Olivares, M., Podgorsak, E.B.: Accurate skin dose measurements using radiochromic film in clinical applications. Med. Phys. 33, 1116–1124 (2006)CrossRefGoogle Scholar
  5. 5.
    Beddar, A.S.: Water equivalent plastic scintillation detectors in radiation therapy. Radiat. Prot. Dosim. 120, 1–6 (2006)CrossRefGoogle Scholar
  6. 6.
    Clift, M.A., Sutton, R.A., Webb, D.V.: Water equivalence of plastic organic scintillators in megavoltage radiotherapy bremsstrahlung beams. Phys. Med. Biol. 45, 1885–1895 (2000)CrossRefGoogle Scholar
  7. 7.
    Petric, M.P., Robar, J.L., Clark, B.G.: Development and characterization of a tissue equivalent plastic scintillator based dosimetry system. Med. Phys. 33, 96–105 (2006)CrossRefGoogle Scholar
  8. 8.
    Khan, F.M.: The Physics of Radiation Therapy. Wolters Kluwer, Philadelphia (2014)Google Scholar

Copyright information

© The Optical Society of Japan 2019

Authors and Affiliations

  • Hyun Young Shin
    • 1
  • Sang Hun Shin
    • 1
  • Si Won Song
    • 1
  • Seunghyun Cho
    • 2
  • Bongsoo Lee
    • 1
    Email author
  1. 1.School of Energy Systems EngineeringChung-Ang UniversitySeoulKorea
  2. 2.Department of Organic Materials and Fiber EngineeringSoongsil UniversitySeoulKorea

Personalised recommendations