In plain language
In a phantom simulating endoscopic retrograde cholangiopancreatography (ERCP), a light side shield clipped onto radioprotective glasses cut eye lens air kerma by roughly 40-90% compared with glasses alone. This is a dosimetry result; real-world comfort and use by endoscopists were not tested.
At a glance
- Type of study
- Original research, Phantom or simulation study
- Who was studied
- Gastroenterologists, Phantom or simulation (no people)
- Where
- Japan
- Summary based on
- the full text
What it found
The final side shield (3 layers, 8 cm front, 6 cm rear) reduced lens-surface air kerma compared with radioprotective glasses alone across phantom heights and body rotation angles.
Key figures: 48.2-87.3% dose reduction
At 165 cm phantom height, average ocular air kerma fell from no protection to glasses alone to glasses plus side shield.
Key figures: 0.134, 0.073 and 0.019 mGy
Estimated number of weekly ERCPs within the 20 mSv/yr lens limit increased with the side shield.
Key figures: 1, 2 and 10 examinations per week
Stacking three or more sheets gave dose reduction above 80%; more than three sheets added little.
Key figures: >80% with ≥3 sheets
With glasses alone, lens dose rose as the phantom rotated toward the monitor, but the side shield kept it near 0.02 mGy regardless of angle.
Key figures: approximately 0.02 mGy
Limits to keep in mind
Phantom study with one over-couch fluoroscopy system, one set of exposure conditions, fixed postures and only two glasses models; comfort, visual field, cleaning and compliance were not assessed, and backscatter may have overestimated Hp(3).
Related research summaries
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- Ocular radiation protection efficiency and ergonomic performance of a novel Shoulder-Mounted radiation shield for interventional procedures (2026, Phantom or simulation study)
- Investigation of radiation doses to the eyes of patients and medical staff during a videofluoroscopic swallowing study: a phantom study (2025, Phantom or simulation study)
- Investigation of Radiation Exposure of Medical Staff During Lateral Fluoroscopy for Posterior Spinal Fusion Surgery (2024, Phantom or simulation study)
- Body Surface Radiation Exposure in Interventional Echocardiographers During Structural Heart Disease Procedures (2023, Dosimetry measurement study)
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.