Study: CT Scans May Cause 2% of Cancers

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The New York Sun

Millions of Americans, especially children, are needlessly getting dangerous radiation from “super X-rays” that raise the risk of cancer and are increasingly used to diagnose medical problems, a new report warns.

In a few decades, as many as 2% of all cancers in the United States might be due to radiation from CT scans given now, according to the authors of the report. Some experts say that estimate is overly alarming. But they agree with the need to curb these tests particularly in children, who are more susceptible to radiation and more likely to develop cancer from it.

“There are some serious concerns about the methodology used,” but the authors “have brought to attention some real serious potential public health issues,” said Dr. Arl Van Moore, head of the American College of Radiology’s board of chancellors. The risk from a single CT, or computed tomography, scan to an individual is small. But “we are very concerned about the built-up public health risk over a long period of time,” said Eric J. Hall, who wrote the report with fellow Columbia University medical physicist David J. Brenner.

It was published in Thursday’s New England Journal of Medicine and paid for by federal grants.


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