Computed Tomography — An Increasing Source of Radiation Exposure
David J. BrennerCenter for Radiological Research, Columbia University Medical Center, New York, NY 10032, USA. [email protected]Eric J. HallCenter for Radiological Research, Columbia University Medical Center, New York
2007en
ABI
Abstract
The number of computed tomographic (CT) studies performed is increasing rapidly. Because CT scans involve much higher doses of radiation than plain films, we are seeing a marked increase in radiation exposure in the general population. Epidemiologic studies indicate that the radiation dose from even two or three CT scans results in a detectable increase in the risk of cancer, especially in children. This article summarizes the facts about this form of radiation exposure and the implications for public health.
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