CT Scan Radiation May Lead to 29,000 Cancers, Researchers Warn

Radiation doses from computed tomographic (CT) scans are higher than previously thought and vary widely, even among the same types of examinations, two studies showed. Radiation from medical tests is generally measured in units called millisieverts, or mSv. One mSv is equivalent to the estimated dose of background radiation the average American absorbs in a year. In the first study, based on information from four San Francisco-area hospitals, median effective doses ranged from 2 mSv for a...Full Story
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