An evaluation of the basic characteristics of a plastic scintillating fibre detector in CT radiation fields

Kento Terasaki, Toshioh Fujibuchi, Takatoshi Toyoda, Yutaka Yoshida, Tsutomu Akasaka, Akihiro Nohtomi, Junji Morishita

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The ionisation chamber for computed tomography (CT) is an instrument that is most commonly used to measure the computed tomography dose index. However, it has been reported that the 10 cm effective detection length of the ionisation chamber is insufficient due to the extent of the dose distribution outside the chamber. The purpose of this study was to estimate the basic characteristics of a plastic scintillating fibre (PSF) detector with a long detection length of 50 cm in CT radiation fields. The authors investigated position dependence using diagnostic X-ray equipment and dependencies for energy, dose rate and slice thickness using an X-ray CT system. The PSF detector outputs piled up at a count rate of 10 000 counts ms-1 in dose rate dependence study. With calibration, this detector may be useful as a CT dosemeter with a long detection length except for the measurement at high dose rate.

Original languageEnglish
Pages (from-to)527-533
Number of pages7
JournalRadiation Protection Dosimetry
Volume171
Issue number4
DOIs
Publication statusPublished - 2016

All Science Journal Classification (ASJC) codes

  • Radiation
  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging
  • Public Health, Environmental and Occupational Health

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