Will a CT scan save your life—or kill you? Researchers say that the level of radiation patients receive from the diagnostic test, sometimes 440 times that of a typical chest X-ray, could cause tens of thousands of cancer cases a year. To what end? There is no evidence that the scans prevent deaths. Should we abandon CT scans altogether? What is an acceptable level of risk?
Gardiner Harris, public health reporter and science correspondent for the NY Times