Some CT Scans Carry High Radiation Risks

Computed tomography (CT) scansare among modern medicine's most valuable imaging methods and can be lifesaving in many situations. However, recent research suggests that some CT scans may expose patients to high levels of radiation. This has become a significant concern for healthcare professionals and patients.

The Dark Side of CT Scanning: Variation Between Examinations

Research by Rebecca Smith-Bindman, a professor at the University of California, and her team shows that CT scans are sometimes performed using very high radiation doses. Approximately 93 million CT scans are performed annually in the United States, and more than half involve people over 60. The most recent comprehensive data on CT scanning in Turkey are from 2021. According to these data, in 2021, a total of 25 million CT scans were performed.

However, radiation doses vary greatly between clinics , and unnecessarily high doses may be administered.

Smith-Bindman emphasizes that radiation doses can vary by as much as 10-fold even among patients with the same clinical problem. According to a study conducted in 2009, high-dose CT scans may cause approximately 2% of the cancer cases diagnosed annually in the United States. With the growing number of CT scans today, this risk is thought to be potentially even higher.

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New Regulations: Are Patients Safer Now?

The United States Centers for Medicare & Medicaid Services (CMS) introduced new regulations effective from January 2024 to reduce patients' radiation exposure. Hospitals and imaging centers will be required to measure and report the radiation doses used in CT scans. The regulations will be fully implemented from 2027, and healthcare facilities that fail to comply may face financial penalties.

The new regulations aim to encourage more careful assessment of radiation doses, image quality, and whether CT scans are necessary.

Mixed Reactions from Healthcare Organizations and Specialists

The American College of Radiology (ACR) and some imaging associations initially argued that these regulations could be complex and increase costs. CMS, however, is trying to address these concerns by involving different technology providers in implementation.

Radiologists also support reducing radiation doses through the regulations. Artificial intelligence, in particular, is expected to help produce images of adequate quality at much lower doses in the near future.

Greater Risk in Children and Young Adults

Undergoing CT scans at a young age can increase the risk of developing cancer later in life. Children are particularly sensitive to radiation, so healthcare professionals emphasize the need for greater care with pediatric scans.

How Can the Risks of CT Scanning Be Reduced?

• Healthcare facilities must regularly monitor and report radiation doses.

• Patients should communicate openly with their doctors about whether a CT scan is genuinely necessary.

• Where possible, magnetic resonance imaging (MRI) may be preferred.

• Adopting artificial intelligence and new technologies will provide the best possible image quality with the lowest possible dose.

These regulations and informed practices could substantially reduce the health risks associated with CT scans. Awareness and care among healthcare professionals and patients are essential for protecting everyone's health.