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CT Scans Linked to 5% of Annual Cancer Cases in the US, Study Finds

A new analysis estimates that 93 million CT scans performed in 2023 could result in 103,000 future cancer cases, highlighting the need for stricter usage guidelines and radiation dose standardization.

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CT scans lead to a higher rate of cancer than previously thought, a new study has found.
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Do CT scans raise your risk of cancer? A new study weighs in.

Overview

  • The study projects that CT scans conducted in 2023 may account for 103,000 future cancer cases in the US, representing 5% of all new diagnoses annually.
  • Children, particularly infants under one year old, face up to 10 times higher cancer risks from CT scan radiation compared to adults, emphasizing their vulnerability.
  • CT scan use has surged by 30% since 2007, with increased utilization contributing significantly to the projected cancer burden.
  • Wide variability in radiation doses across facilities has been identified, with some scans exceeding recommended thresholds, underscoring the need for dose standardization.
  • Experts stress that while CT scans are vital diagnostic tools, they should only be used when clinically necessary, with alternative imaging methods considered to minimize unnecessary radiation exposure.