CT Use May Add to Future Cancer Burden
Overview
A modeling study published in JAMA Internal Medicine projects that computed tomography (CT) imaging in the US could lead to approximately 103,000 future radiation-induced cancers in 2023, based on improved radiation dose assessment and increased CT utilization.
Background
The rising use of CT scans in clinical practice raises concerns regarding the associated radiation exposure and its potential long-term effects, including increased cancer risk. This study highlights the need for ongoing evaluation of imaging practices and radiation dose management, as it found that CT imaging could account for about 5% of new cancer diagnoses annually if current trends continue.
Data Highlights
| Year | Projected Future Cancers | CT Examinations |
|---|---|---|
| 2023 | 103,000 | 93 million |
Key Findings
- Projected 103,000 future radiation-induced cancers from 93 million CT scans in 2023.
- Adult imaging accounts for the majority of projected cancers (93,000 cases).
- Pediatric imaging contributes 9,700 projected cancers, with the highest risk in infants.
- Multiphase scanning is linked to increased cancer risk; single-phase scanning may reduce dose without compromising accuracy.
- Lung cancer is the most common projected cancer type, followed by colon cancer and leukemia.
- Sensitivity analysis showed estimates ranging from 80,000 to 127,000 projected cancers based on varying assumptions.
Clinical Implications
Healthcare providers should consider the potential long-term risks associated with CT imaging, especially in pediatric patients. Implementing strategies such as using ultrasound or MRI when appropriate, and standardizing dose protocols across imaging sites is essential to mitigate future cancer risks.
Conclusion
The findings underscore the importance of careful consideration of CT utilization patterns and radiation dose management to reduce the potential future cancer burden associated with imaging, while emphasizing the need for ongoing research.
Related Resources & Content
- Smith-Bindman et al, JAMA Internal Medicine, 2025 -- Projected Lifetime Cancer Risks From Current Computed Tomography Imaging
- The ASCO Post, 2025 -- Link Between CT Scans and Future Cancer Incidence?
- The ASCO Post, 2025 -- Cancer Deaths Expected to Rise to Over 18 Million in 2050
- The ASCO Post, 2023 -- Certain Cancers Will Likely Rise Exponentially Because of COVID-19 Screening Delays, Study Predicts
- The ASCO Post — Reducing Unnecessary and High-dose Pediatric CT Scans Could Cut Future Cancers by More than Half
- Appropriateness Criteria
- National Performance Goal #13: Protecting Patients and Providers in Imaging | Joint Commission
- Projected Lifetime Cancer Risks From Current Computed Tomography Imaging
This content is an AI-generated, fully rewritten summary based on a published scholarly article. It does not reproduce the original text and is not a substitute for the original publication. Readers are encouraged to consult the source for full context, data, and methodology.
