 This study examined the effects of introducing the Pediatric Emergency Care Applied Research Network, PECARN, rule to the Emergency Department, E.D. In order to reduce the number of computed tomography, CT, scans performed on young children with minor head injuries. The PECARN rule is a set of guidelines developed by the American Academy of Pediatrics to help identify children at high risk, of having a serious head injury following a fall or other accident. The study found that after the introduction of the PECARN rule, the number of CT scans performed on children under the age of 2 decreased significantly, while the number of children diagnosed with a serious head injury remained unchanged. This suggests that the PECARN rule may be an effective tool for reducing unnecessary CT scans in young children with minor head injuries. This article was authored by Sung Won-young, Jae Ho Jang, Jin Song-choo and others. We are article.tv, links in the description below.