DOTmed April 18, 2025
Routine use of CT imaging may contribute to as many as 5% of all cancer cases in the U.S. each year, according to new research published April 14 in JAMA Internal Medicine.
The study, led by researchers at the University of California, San Francisco, attributes this risk to the ionizing radiation used in CT exams and calls for more judicious use of the technology.
An estimated 93 million CT scans were performed in 2023, with researchers projecting approximately 103,000 cancer cases as a result — three to four times higher than earlier estimates. The risk is highest for infants, but adults, who receive the most scans, account for the largest share of projected cases.
“CT can save lives, but its...
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