Aim: The aim of this study is to investigate the necessity of repeated computed tomography (CT) in pediatric patients with Traumatic Brain Injury (TBI). Materials and Methods: After ethical committee approval ,this retrospective study was done between 76 pediatric patients with age ≤ 16 who applied to Bakirkoy Dr.Sadi Konuk Education and Research Hospital in between 31 December 2009- 31 December 2010 due to Head Trauma. Results: Fifty one of 76 patients were male, 25 were female and average age was 5.82±3.66. Of the patients admitted to emergency department, 86.84% have mild TBI, 7.9% have moderate TBI and 5.62% have severe TBI pre-diagnosis. Forty two point one percent of patients had CT three times, the rest had more than three times; total CT number was 317. Two patients showed changes in second CT (one epidural and one subdural hemorrhage) according to first CT whereas there was no change in third CT. The decision of operation in all operated patients treated surgically (7.9%) was given according to the result of first CT. While 92.1% of patients were discharged from the hospital by complete recovery, 6.6% of patients were with sequelae and mortality ratio was 1.3%. The changes in repeated CT did not change the treatment while every child was exposed to additional radiation. Conclusion: Repeated CT in children with head trauma did not contribute to the prognosis of patients, the choice of treatment and survival. The children applied serial CT should be followed for the diseases which can be progressed due to radiation in future.