Decide on neuroimaging after a paediatric head injury — OSCE

A 3-year-old boy is brought to the emergency department by his parent after a fall from a playground slide of approximately one metre onto a rubber surface. He cried immediately, did not lose consciousness, is alert and interactive with a Glasgow Coma Scale of 15, has not vomited, has no palpable skull fracture or signs of basilar skull fracture, no severe headache, and his parent feels he is acting normally. The parent is anxious and is asking whether he needs a brain scan, having read online that CT radiation causes cancer. You are the paediatric registrar asked to assess the child, decide on imaging, and counsel the parent.