A major international study coordinated by the International Atomic Energy Agency (IAEA) and Columbia University has revealed significant differences in radiation exposure among patients undergoing diagnostic tests for coronary artery disease (CAD). The research, published in JAMA, involved over 19,000 patients across 742 centers in 101 countries, making it the largest global assessment of radiation exposure in non-invasive cardiac imaging. Key findings indicate that while many centers adhered to recommended radiation limits, exposure levels varied widely based on geographical location, income levels, and imaging technology used. Patients in low- and middle-income countries often received higher doses, particularly for coronary CT angiography. The study emphasizes the importance of optimizing imaging protocols and equipment to reduce radiation without compromising diagnostic quality. The IAEA aims to leverage these findings to improve training and protocols, ensuring safer imaging practices worldwide. Experts believe that addressing these disparities in radiation exposure is crucial for patient safety and effective diagnosis of heart disease.
Thu, 26 Feb 2026 11:21:20 GMT | International Atomic Energy Agency