In plain language
In one Japanese hospital, physicians performing fluoroscopically guided bronchoscopy received eye doses that in three of eight cases would exceed the 20 mSv/year lens limit; nurses received less. Neck badges tended to underestimate eye dose.
At a glance
- Type of study
- Original research, Dosimetry measurement study
- Who was studied
- Other physicians, Nurses
- Size
- n = 11 staff (8 physicians, 3 nurses)
- Where
- Japan
- Summary based on
- the full text
What it found
Bronchoscopy physicians received a mean eye dose about three times that of nurses over six months.
Key figures: 7.68 ± 5.27 vs 2.41 ± 1.94 mSv/6 months
Three of eight physicians exceeded the 20 mSv/year lens dose limit based on estimated annual eye dose; no nurse exceeded it.
Key figures: 3 of 8 physicians; mean estimated annual dose 15.4 ± 10.5 mSv/y
Neck dosimeters worn outside the apron tended to underestimate eye dose compared with the direct eye dosimeter, though neck and eye readings were significantly correlated.
Key figures: Physicians annual: DOSIRIS 15.4 ± 10.5 vs neck badge 11.1 ± 8.3 mSv/y
Left-eye doses were higher than right-eye doses, about 1.7 times in physicians (not statistically significant) and 1.5 times in nurses.
Key figures: Physicians left 1.35 ± 1.41 vs right 0.81 ± 0.76 mSv/month
Nurse eye doses were lower but not negligible; one nurse approached 10 mSv/year.
Key figures: Nurses annual DOSIRIS 4.81 ± 3.87 mSv/y
Limits to keep in mind
Single-centre study with only 11 staff using an over-the-table X-ray system without lead glasses; annual doses were extrapolated from 6 months and lead glasses were recommended but not tested.
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- Occupational Radiological Protection in Interventional Procedures, ICRP PUBLICATION 139 (2018, Guideline or consensus statement)
- ICRP Draft - Radiological Protection in Fluoroscopically Guided Procedures (Guideline or consensus statement)
- Occupational radiation exposure and crystalline lens density in perioperative nurses: a short communication (2026, Cross-sectional survey)
How this summary was made
ORSIF prepared this summary with AI assistance from the full text of the paper. A program then checked that the passage supporting each finding appears word for word in that source. A person has not yet reviewed each summary, so read the original before relying on a number. ORSIF summarizes research and does not endorse any product or company. Report a problem with this summary.
Prepared November 3, 2026.