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目的：探讨婴幼儿铅中毒脑损害的ＣＴ表现及机理。方法：对７例急、慢性铅中毒进行回顾性分析。结果：急性铅中毒脑ＣＴ改变主要是弥漫性脑水肿，以大脑皮、髓质改变明显，经治疗后可发生不同程度脑萎缩，部分伴有软化和钙化。慢性铅中毒主要是脑实质的钙化，以基底节和大脑皮、髓质交界区多见。结论：脑ＣＴ对判断铅中毒脑损害的严重程度及估计预后具有重要价值。
Objective: To investigate the CT manifestations and mechanism of brain injury caused by lead poisoning in infants and children. Methods: Seven cases of acute and chronic lead poisoning were retrospectively analyzed. Results: Acute lead poisoning brain CT changes mainly diffuse cerebral edema, to the cerebral cortex, medullary changes significantly, after treatment may occur in varying degrees of brain atrophy, some accompanied by softening and calcification. Chronic lead poisoning is mainly parenchymal calcification, basal ganglia and cerebral cortex, medulla junction more common. Conclusion: Brain CT has important value in judging the severity of brain damage and estimating prognosis of lead poisoning.