The Korean Journal of Gastroenterology :eISSN 2233-6869 / pISSN 1598-9992

Table. 5.

Recommendations for Interventionalists to Minimize Radiation Exposure

Recommendations
1. Interventionalists should wear wrap-around (not front-only) protective aprons with a lead-equivalent thickness ≥0.25 mm and protective collar with a lead-equivalent thickness ≥0.25 mm.
2. Interventionalists are recommended to wear protective glasses with side panels having a lead-equivalent thickness ≥0.5 mm.
3. The use of radiation shielding devices (e.g., vertical shields suspended from the patient table, ceiling or movable shields) is recommended to protect against scattered radiation.
4. Using under-couch systems can reduce radiation exposure compared to over-couch system.
5. Pulsed fluoroscopy is recommended to use instead of continuous fluoroscopy.
6. Maintain the maximum possible distance from the X-ray tube of the fluoroscopy equipment.
7. Minimize fluoroscopy time during procedures.
8. Use the last-image-hold method instead of taking additional radiographs.
9. Minimizing image enlargement during procedures can help reduce radiation exposure.
10. Collimating the X-ray beam during procedures is recommended.
11-1. The effective dose limit for interventionalists should be restricted to 20 mSv, averaged over defined periods of 5 years (maximum 50 mSv, per year).
11-2. To prevent eye lens damage, the effective dose limit should be restricted to 20 mSv, averaged over defined periods of 5 years (maximum 50 mSv, per year).
12. Measurement and collection of radiation dose data at each institution are essential for establishing Diagnostic Reference Levels (DRLs).
13. Interventionalists should wear dosimeters to measure radiation exposure levels.
14. Interventionalists should undergo health check-ups, including hemoglobin and white blood cell counts, every two years.
15. Pregnant female interventionalists should maintain an effective dose of less than 2 mSv to the abdominal surface, beneath the protective apron, during the pregnancy period to ensure the healthy birth of the fetus.
16. Female interventionalists planning pregnancy are recommended to maintain an effective dose of less than 5 mSv to the abdominal surface, beneath the protective apron, over three months.
Korean J Gastroenterol 2024;84:251~264 https://doi.org/10.4166/kjg.2024.074
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