The HARMONIC project has launched a transformative framework to calculate cardiac fluoroscopy organ dose for both pediatric and adult patients. This initiative addresses the critical need to investigate long-term cancer risks associated with ionizing radiation during interventional cardiology. By providing accurate dosimetry, medical professionals can better optimize protocols to protect vulnerable populations, especially children.

Improving Precision in Cardiac Fluoroscopy Organ Dose Estimation

Developing this framework required extensive simulations using the MCNP6.2 Monte Carlo particle transport code. Researchers utilized eight realistic anthropomorphic phantoms to represent patients from infancy to adulthood. Consequently, they analyzed over 22,000 exposure configurations covering various beam angles, filtration levels, and tube voltages. Furthermore, the team interpolated these results to generate over 2.6 million scenarios. This massive database ensures that the tool provides high-level accuracy for virtually any clinical exposure scenario.

The resulting software, named HARMONIC-CardioDose, focuses on 15 specific organs of interest for radiation protection and effective dose. It functions as a Python script or an executable file, requiring only a simple Excel document for technical inputs. Therefore, researchers can rapidly estimate doses without needing specialized knowledge of complex Monte Carlo simulations. Moreover, this tool is freely available to the global medical community, supporting enhanced patient safety in interventional cardiology.

Clinical Significance for Pediatric Care

Because children are more sensitive to radiation, precise dose monitoring is essential for long-term health management. HARMONIC-CardioDose bridges the gap between complex physics and clinical application. Finally, this tool provides the data necessary to refine medical guidelines and reduce radiation-induced toxicities in young patients.

Frequently Asked Questions

What is the primary function of HARMONIC-CardioDose?

It is a validated software tool designed to provide rapid and accurate estimates of organ doses for patients undergoing cardiac fluoroscopy procedures.

Is the HARMONIC-CardioDose tool available for clinical use?

Yes, the tool is freely available to the medical and research community to support patient dosimetry and radiation protection research.

Disclaimer: This content is for informational and educational purposes only. It does not constitute medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. Refer to the latest local and national guidelines for clinical practice.

References

Dabin J et al. HARMONIC organ dose calculation framework for cardiac fluoroscopy. Biomed Phys Eng Express. 2026 Mar 03. doi: 10.1088/2057-1976/ae4c96. PMID: 41774939.

Harbron RW et al. The HARMONIC project: Study design for assessment of cancer risks following cardiac fluoroscopy in childhood. J Radiol Prot. 2020;40(4):R107-R126.