An Original Article in the August 27, 2009 issue of the New England Journal of Medicine raises concerns that imaging procedures, such as CT scans, that expose patients to low-dose ionizing radiation may be increasing their risk for cancer.
Fazel et al of Emory University obtained utilization data from just under 1 million nonelderly adults between January 1, 2005 and December 31, 2007 in five areas in the U.S. Using this data, the authors estimated the cumulative effective doses of radiation from imaging procedures and calculated population-based rates of exposure. Annual effective doses were defined as low, moderate, high or very high.
The authors found that almost 70 percent of those studied were exposed to radiation by at least one imaging procedure. Read more