Related Experiment Video
Updated: Apr 5, 2026
Hemodynamic Precision in the Neonatal Intensive Care Unit using Targeted Neonatal Echocardiography
Published on: January 27, 2023
Estimation of Organ and Effective Doses for Neonate and Infant Diagnostic Cardiac Catheterizations
Toshio Kawasaki1, Keisuke Fujii2, Keiichi Akahane3
11 Department of Radiological Technology, Kanagawa Children's Medical Center, 2-138-4 Mutsukawa, Minami-ku, Yokohama 232-8555, Japan.
Insights
Radiation doses for infants and neonates undergoing cardiac catheterization were measured using phantom dosimetry. This study provides essential data and conversion factors for estimating radiation exposure in these vulnerable pediatric populations.
Area of Science:
- Medical Physics
- Pediatric Cardiology
- Radiology
Background:
- Radiation exposure during pediatric cardiac catheterization is a significant concern due to patient size and procedural requirements.
- Higher magnification and frame rates increase radiation doses in neonates and infants.
Purpose of the Study:
- To assess organ and effective radiation doses in neonates and infants during diagnostic cardiac catheterization.
- To determine conversion factors from dose-area product (DAP) to effective dose for pediatric patients.
Main Methods:
- Utilized radiophotoluminescence glass dosimeters within anthropomorphic phantoms for neonates and infants.
- Measured organ doses and calculated effective doses following International Commission on Radiologic Protection (ICRP) publication 103 guidelines.
Main Results:
- Mean effective doses were 7.7 mSv for neonates and 7.3 mSv for infants.
- Conversion factors from DAP to effective dose varied by projection and patient age, ranging from 1.4 to 4.0.
Conclusions:
- The study provides valuable dose data and conversion factors for estimating radiation exposure in pediatric cardiac catheterization.
- These findings can aid in optimizing radiation protection strategies for neonates and infants.
Objective:
Radiation exposure to neonates and infants during cardiac catheterizations is an important issue. Smaller patient size and higher heart rate in these patients result in a greater need for magnification modes and higher frame rates, all of which contribute to a significant increase in radiation doses. The aims of our study were to evaluate organ and effective doses for neonates and infants during diagnostic cardiac catheterizations on the basis of in-phantom dosimetry and conversion factors from dose-area product (DAP) to the effective dose.
Materials And Methods:
Organ doses for 0- and 1-year-old children during diagnostic cardiac catheterizations were measured by radiophotoluminescence glass dosimeters implanted in neonate and infant anthropomorphic phantoms. The effective doses were evaluated according to recommendations of the International Commission on Radiologic Protection (ICRP) publication 103.
Results:
The mean effective doses evaluated according to ICRP 103 were 7.7 mSv (range, 0.1-18.4 mSv) for a neonate and 7.3 mSv (range, 1.9-18.6 mSv) for an infant. Conversion factors from DAP to the effective dose were 2.2 and 4.0 in posteroanterior and lateral cine angiography, respectively, for a neonate and 1.4 and 2.7 in posteroanterior and lateral cine angiography, respectively, for an infant.
Conclusion:
The dose data and conversion factors evaluated in this study could be useful for the estimation of radiation exposure in neonates and infants during diagnostic cardiac catheterization.
More Related Videos
Related Concept Videos
01:28Cardiac Catheterization I: Pre-Procedure Overview
01:28Imaging Studies for Cardiovascular System V: CT
01:26Cardiac Catheterization IV: Nursing Management
01:29Drug Dosing: Infants and Children
01:24Cardiac Catheterization III: Left Heart Catheterization
01:21Cardiac Catheterization II: Right Heart Catheterization