The medical community is waking up to an enormous problem with radiation – mainly X-rays and CT scans – used to diagnose disease and injury. Patients are getting too much radiation, and the excess itself causes injuries, many years down the road, in a big uptick in the risk of cancer.
Even a “routine” CT scan of the abdomen, ordered thousands of times every day in the United States for patients with belly pain, carries a large risk of downstream cancer, just from that single scan.
Dr. Rebecca Smith-Bindman, MD, of the University of California San Francisco, estimates a 20-year-old woman who undergoes a CT scan of the abdomen and pelvis has a one in 250 chance over her lifetime of getting cancer just from that single dose of radiation. This number was in a talk she gave recently at UCSF, as reported by her colleague Bob Wachter, MD, a patient safety expert at UCSF.