HealthDay reported "Cumulative exposure to radiation from CT scans can increase the risk for cancer by as much as 12 percent." The article was published in the April issue of Radiology. The strongest risk seemed to be in people with high numbers of CT scans but we have to remember that CTs bring with them a lot of radiation. There really isn't any other way to get the information they can tell you some times so alternatives are minimal but we should be careful in how we use them.