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Patient dosimetry during coronary interventions: a comprehensive analysis
Efstathios P Efstathopoulos1, Evangelia Karvouni, Sofia Kottou
1Department of Cardiology, Athens Euroclinic, Athens, Greece.
American Heart Journal
|March 5, 2004
Summary
Patient radiation during coronary interventions was analyzed, revealing mean doses and estimating cancer risks. This study provides insights for optimizing radiation safety protocols in interventional cardiology.
Area of Science:
- Interventional Cardiology
- Medical Radiation Physics
- Patient Safety
Background:
- Coronary interventions involve patient exposure to ionizing radiation.
- Assessing radiation doses and associated risks is crucial for patient safety.
Purpose of the Study:
- To conduct a detailed analysis of patient radiation doses during coronary interventions.
- To compare measured doses against established dose reference levels.
- To estimate the total radiation risk of fatal cancer.
Main Methods:
- Prospective examination of 281 patients undergoing 307 percutaneous coronary interventions.
- Measurement of kerma area product (KAP), fluoroscopy, and cineangiography doses.
- Calculation of effective dose and coronary artery doses using phantom studies.
Main Results:
- Mean KAP was 82.1 Gy x cm², with significant contributions from specific projections.
- Mean coronary dose was 61.7 mGy; maximum skin dose was 182 mGy.
- Estimated total fatal cancer risk was 83 cases per 100,000 patients.
Conclusions:
- Detailed analysis of radiation exposure during coronary interventions was performed.
- Coronary doses and cancer risks were calculated.
- A method for establishing dose reference levels was proposed.