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Two Central Nervous System Tumors in One Catheter Lab: Time to Rethink Radiation Protection
James R Bentham1, John D R Thomson2
1Department of Congenital Cardiology, Leeds General Infirmary, Leeds, UK.
Summary
Introducing new catheter laboratory equipment significantly reduced patient radiation doses by 30.2%. This highlights the importance of monitoring ionizing radiation and upgrading equipment to minimize operator exposure and potential health risks.
Area of Science:
- Cardiology
- Radiology
- Occupational Health
Background:
- Limited research exists on the long-term health effects of frequent, low-dose ionizing radiation exposure for interventional cardiologists.
- Two central nervous system tumors diagnosed in operators prompted this investigation into radiation exposure in catheterization laboratories.
Purpose of the Study:
- To compare the impact of a new catheterization laboratory on total patient radiation dose.
- To assess trends in patient radiation dose over an 18-year period.
Main Methods:
- Analysis of radiation dose data for 9002 patients from 2006 to 2025, divided into two cohorts based on laboratory usage (Lab 1: 2006-2019, Lab 2: 2019-2025).
- Comparison of total patient dose, fluoroscopy dose, and acquisition dose between the two laboratory cohorts.
Main Results:
- Lab 1 showed an upward trend in total exposure dose before decommissioning (R²=0.78).
- Introduction of Lab 2 resulted in a 30.2% reduction in total patient dose.
- Significant reductions were observed in both fluoroscopy dose (11.6%) and acquisition dose (57.3%) in Lab 2 compared to Lab 1.
Conclusions:
- The significant dose reduction after introducing new equipment supports the need for regular monitoring of ionizing radiation doses.
- Routine equipment replacement every 8-10 years is recommended to prevent unnecessary excess radiation exposure.
- Understanding factors contributing to excess exposure is crucial for implementing preventive measures, assuming a linear no-threshold dose-response relationship for radiation exposure and cancer risk.
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