胸部X线照片广泛应用于儿童急性下呼吸道感染,但临床效果如何尚不清楚。方法:符合WHO肺炎诊断标准的儿童522例,年龄2～59个月,随机分配为两组,一组行胸部X线照片,另一组作为对照。通过电话联系记录295例患儿恢复时间,附带记录诊断、治疗和随后健康设备使用情况。结果:两组恢复 Chest X-ray is widely used in children with acute lower respiratory tract infection, but the clinical effect is not yet clear. Methods: A total of 522 children were enrolled in the WHO diagnostic criteria for pneumonia, ranging in age from 2 to 59 months. They were randomly assigned to two groups. One group had chest radiographs and the other group served as a control. 295 cases of child recovery time were recorded by phone, with incidental diagnosis, treatment and subsequent use of health equipment recorded. Results: Two groups recovered