A study in JAMA Internal Medicine estimates that CT scans in the US, while lifesaving, may contribute to 103,000 future cancer cases due to cumulative low-dose radiation exposure. Researchers used data from 143 hospitals and extrapolated from historical radiation exposure data. While individual risk remains minimal, the sheer volume of scans (93 million in 2023) raises concerns. The study highlights the need for justified CT scan use and further research into low-dose radiation's long-term effects, particularly in children and adolescents, where risks appear higher. Experts emphasize that CT scans remain crucial for diagnosis and treatment when medically necessary.

Prepared by Olivia Bennett and reviewed by editorial team.