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Tracy Hampton, PhD

JAMA. 2004;292:1669.

	Since this article does not have an abstract, we have provided the first 150 words of the full text and any section headings.

Elective full-body computed tomography (CT) scans in healthy individuals have long been controversial because of uncertainties surrounding their ability to detect hidden disease. Now, researchers report that radiation from a single full-body CT examination corresponds to a dose comparable with a level of radiation linked to increased cancer mortality in low-dose atomic bomb survivors from Hiroshima and Nagasaki, in Japan (Radiology. 2004;232:735-738).

Full-body CT scans deliver a radiation dose nearly 100 times that of a typical mammogram. Photo credit: AP/Wide World Photos

The authors question the use of such an expensive procedure of disputed value in asymptomatic people in light of such risk. Full-body CT scans deliver a dose of radiation nearly 100 times that of a typical mammogram.

"There is direct epidemiological evidence that the sorts of doses of relevance for a single full-body CT scan do increase an individual's cancer risk," said lead . . . [Full Text of this Article]

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