Digital mammograms deliver an average of 22% less radiation than film mammograms, according to a study partially funded by the National Cancer Institute and published in the American Journal of Roentgenology, Reuters reports. For the study, researchers analyzed the results of the 2005 Digital Mammographic Imaging Screening Trial involving 49,528 women. That trial found that digital mammograms detected up to 28% more cancers than film mammograms in women under age 50 who had not experienced menopause and women with dense breast tissue... 
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