Computed tomography scans and cancer risk: Safety efforts: The Radiology Community has Launched a Number of Initiatives to Ensure Safety and Effectiveness in Medical Imaging

摘要

For one, critics of the conclusion question the validity of some of the methods that are used to determine risk of radiation exposure. "There are epidemiologists who calculate a risk factor, but not everyone reaches the same conclusion," says Richard Morin, PhD, Chair of the American College of Radiology (ACR) Dose Index Registry and Chief Medical Physicist at die Mayo Clinic in Jacksonville, Florida. "It's difficult to say with a high degree of certainty that the cancers were caused by ionizing radiation."He adds that because these cancers occur randomly in the population, it is not easy to attribute them to one particular cause. Donald Frush, MD, Chief of the Division of Pediatric Radiology at Duke University in Durham, North Carolina, concurs that uncertainties still exist. "The question is far from answered," he says.