Use of CT scans in children younger than 14 years of age more than doubled from 1996 to 2005, before growth began to slow and reverse, according to a study of seven U.S. healthcare systems published in JAMA Pediatrics. The 4 million pediatric CT scans of the head, abdomen/pelvis, chest or spine performed in the U.S. each year are projected to result in 4,870 future cancers, according to Diana Miglioretti, PhD, of the Group Health Research Institute and University of California, Davis, and colleagues.