目的减少接受CT检查的儿童受照剂量。方法运用放射实践的正当化和防护的最优化原则在儿童CT检查中采取相应措施。结果通过严格掌握儿童CT检查适应症及减小射野,对非受检部位进行屏蔽,可显著降低受照剂量。结论儿童对X射线照射具有较高的敏感性和更多的潜能在危害,必须加强在CT检查中对儿童的辐射防护。 Objective To reduce the dose of children undergoing CT examination. Methods The principle of optimization of radiation practice and protection should be taken in the CT examination of children. Results By mastering the indication of children’s CT examination and reducing the radiation field, shielding the non-examined parts can significantly reduce the dose of irradiation. Conclusion Children have higher sensitivity to X-ray radiation and more potential hazards. Children’s radiation protection in CT examination must be strengthened.