Typical values of pediatric interventional cardiology procedures in Beijing, China: a multicenter cross-sectional
Jun Yu1, Limeng Cui1, Zechen Feng1
1Department of Radiation Protection, Beijing Center for Disease Prevention and Control, No. 16, Hepingli Middle Street, Dongcheng District, 100013, Beijing, China.
Insights
Pediatric interventional cardiology patients receive high radiation doses. This study provides typical radiation exposure values for fluoroscopy time, cumulative reference point air kerma (Ka,r), and air kerma-area product (PKA) by age and weight, aiding dose optimization.
Area of Science:
- Medical Physics
- Pediatric Cardiology
- Radiation Safety
Background:
- Children are more sensitive to ionizing radiation than adults.
- Interventional cardiology procedures expose pediatric patients to significant radiation doses.
- Establishing typical radiation dose values is crucial for pediatric patient safety.
Purpose of the Study:
- To determine and report typical radiation dose values for pediatric patients undergoing interventional cardiology procedures.
- To provide reference data for fluoroscopy time, cumulative reference point air kerma (Ka,r), and air kerma-area product (PKA).
- To establish a basis for dose comparison and optimization across facilities.
Main Methods:
- A 4-year follow-up study was conducted in two cardiovascular hospitals and a pediatric polyclinic.
- Data from 454 pediatric cases were analyzed for fluoroscopy time, Ka,r, and PKA, stratified by age groups.
- Radiation dose metrics (Ka,r and PKA) were also analyzed for 144 cases, stratified by weight bands.
Main Results:
- Median fluoroscopy times ranged from 4.0 to 5.6 minutes across different age groups.
- Median cumulative reference point air kerma (Ka,r) varied significantly by age, with the highest values in the 10 to <16 year group (90.1 mGy).
- Median air kerma-area product (PKA) showed a trend of increasing with age and weight, reaching 25.6 Gy·cm² for patients >50 kg.
Conclusions:
- The study provides essential reference data for radiation doses in pediatric interventional cardiology.
- These findings can be used to compare local practices and identify areas for radiation dose optimization.
- Implementing these benchmarks can contribute to improved radiation safety for pediatric patients.
Abstract:
Children receive high radiation doses during interventional cardiology procedures and their sensitivity to radiation is higher than that of adults. A 4-year follow-up study was conducted in two large cardiovascular hospitals and a pediatric polyclinic with the objective of providing typical values. The median values of 454 cases obtained for fluoroscopy time, cumulative reference point air kerma (Ka,r) and air kerma-area product (PKA) by age range were 5.6 min, 53.6 mGy, and 4.1 Gy cm2 for <1 y; 4.3 min, 77.9 mGy, and 7.2 Gy cm2 for 1 to <5 y; 4.0 min, 41.4 mGy, and 7.4 Gy cm2 for 5 to <10 y; 4.4 min, 90.1 mGy, and 16.1 Gy cm2 for 10 to <16 y, respectively. The median values of 144 cases obtained for Ka,r and PKA by weight bands were 84.4 mGy and 7.4 Gy cm2 for <15 kg, 25.8 mGy and 3.7 Gy cm2 for 15-30 kg, 46.4 mGy and 9.2 Gy cm2 for 30-50 kg, and 154.0 mGy and 25.6 Gy·cm2 for >50 kg. Our results can serve as a dose comparison with local practice and as a basis for optimization between facilities.
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