Radiation eye dose to medical staff during respiratory endoscopy under X-ray fluoroscopy

Yoshihiro Haga, Koichi Chida, Yuichiro Kimura, Shinsuke Yamanda, Masahiro Sota, Mitsuya Abe, Yuji Kaga, Taiichiro Meguro, Masayuki Zuguchi

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


Although the clinical value of fluoroscopically guided respiratory endoscopy (bronchoscopy) is clear, there have been very few studies on the radiation dose received by staff during fluoroscopically guided bronchoscopy. The InternationalCommission on Radiological Protection (ICRP) is suggesting reducing the occupational lens dose limit markedly from 150 to 20 mSv/year, averaged over defined periods of five years. The purpose of this study was to clarify the current occupational eye dose of bronchoscopy staff conducting fluoroscopically guided procedures. We measured the occupational eye doses (3-mm-dose equivalent,Hp(3)) of bronchoscopy staff (physicians and nurses) over a 6-month period. The eye doses of eight physicians and three nurses were recorded using a direct eyedosimeter, the DOSIRIS. We also estimated eye doses using personal dosimeters worn at the neck. The mean ± SD radiation eye doses (DOSIRIS) to physicians and nurses were 7.68 ± 5.27 and 2.41 ± 1.94 mSv/6 months, respectively. The new lens dose limit, 20 mSv/year, may be exceeded among bronchoscopy staff, especially physicians. The eye dose of bronchoscopy staff (both physicians and nurses) was underestimated when measured using a neck dosimeter. Hence, the occupational eye dose of bronchoscopy staff should be monitored. To reduce the occupational eye dose, we recommend that staff performing fluoroscopically guided bronchoscopy wear Pb glasses. correct evaluation of the lens dose [Hp(3)] using an eye dosimeter such as the DOSIRIS is necessary for bronchoscopy staff.

Original languageEnglish
Pages (from-to)691-696
Number of pages6
JournalJournal of radiation research
Issue number5
Publication statusPublished - 2020 Sept 1


  • 3-mm dose-equivalent [Hp(3)]
  • Dosimeter
  • Fluoroscopically guided respiratory endoscopy (bronchoscopy)
  • Radiation disaster medicine
  • Radiation safety eye lens dose
  • X-ray fluoroscopy

ASJC Scopus subject areas

  • Radiation
  • Radiology Nuclear Medicine and imaging
  • Health, Toxicology and Mutagenesis


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