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Global Cardiac Imaging Radiation Varies Widely

International study of more than 19,000 patients finds substantial differences in radiation exposure from coronary artery disease imaging across modalities, regions, and income levels.

  • By

  • Julie Greenbaum

  • March 12, 2026

  • 4 min

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  • 1

    Forty-four percent of patients undergoing coronary computed tomography angiography exceeded the 9 millisievert radiation guideline.

  • 2

    The study evaluated radiation exposure in 19,302 patients across 742 centers in 101 countries during noninvasive coronary imaging.

  • 3

    Median radiation doses varied significantly by imaging modality, with CCTA showing the highest variability among centers.

  • 4

    Geographic and economic factors influenced radiation exposure, with lower doses in Western Europe and higher doses in Latin America and Africa.

  • 5

    The findings indicate a need for improved training, standardized protocols, and updated equipment to enhance safety in cardiac imaging.

Original Source(s)

Global Cardiac Imaging Radiation Varies Widely

  • by Julie Greenbaum

  • March 12, 2026

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