Overview

• A JAMA Internal Medicine study estimates that 93 million CT scans performed in the U.S. in 2023 could lead to over 100,000 future cancer cases, representing 5% of annual diagnoses.
• The projected risks are based on statistical models rather than direct clinical evidence linking CT scans to cancer, though ionizing radiation is a known carcinogen.
• Children and teenagers are particularly vulnerable to radiation-related risks due to their developing bodies and longer lifespans for potential effects to manifest.
• CT imaging remains indispensable for diagnosing life-threatening conditions, guiding treatments, and managing emergencies like strokes, despite the theoretical risks.
• Advancements in low-dose CT protocols and alternative imaging modalities, such as MRI and ultrasound, are recommended to reduce radiation exposure and optimize patient safety.