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Radiology blues: Comparing occupational blue-light exposure to recommended safety standards
Mari Wentzel1, Jacques Janse van Rensburg1, Jacobus J Terblans2
1Department of Clinical Imaging Science, Faculty of Health Sciences, University of the Free State, Bloemfontein, South Africa.
SA Journal of Radiology
|February 9, 2023
Summary
Radiologists
Area of Science:
- Ophthalmology and Occupational Health
- Medical Imaging and Display Technology
Background:
- Blue-light hazard from high-energy visible light (305 nm - 450 nm) poses health risks.
- Radiologists face prolonged exposure to blue light from diagnostic monitors.
Purpose of the Study:
- Quantify blue light exposure for radiology registrars from diagnostic monitors.
- Compare exposure levels with international occupational safety standards.
Main Methods:
- Cross-sectional observational study of four radiology registrars.
- Measured blue-light radiance from diagnostic monitors using a spectroscope and image analysis software.
- Assessed image modalities and daily monitor viewing times.
Main Results:
- Radiology registrars viewed monitors for an average of 380 minutes daily.
- Blue-light radiance varied by image intensity (e.g., chest radiographs vs. MRI brain).
- Total blue-light radiance was over 10,000 times below recommended safety thresholds.
Conclusions:
- Measured blue-light radiance from diagnostic displays is well below occupational safety limits.
- Blue-light exposure from diagnostic monitors does not significantly increase radiologists' occupational health burden.
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