目的：分析我国电子计算机断层扫描（CT）、磁共振成像（MRI）、数字减影血管造影（DSA）三种医用设备的总体配置情况及二、三级医院对比情况。方法：数据源于中国二、三级医院医疗服务能力基线调查，本研究选择具有完整设备数据的医院进行分析。结果：CT在全国范围内覆盖率高，在三级医院达到100%，MRI在二级医院配置不足50%，DSA在二级医院配置不足20%；全国范围内CT日均单机检查量为76人次，MRI日均单机检查量为32人，远高于公认的专家建议数值；三级医院各设备平均检查量、需要服务的门急诊人次和床位数均高于二级医院。结论：二级医院仍需加大MRI和DSA的覆盖率；CT和MRI单机工作量标准应重新探讨；分流三级医院的轻症患者到二级医院，实现分级诊疗，是提高二级医院设备利用率的重要举措。

Objective: To analyse the configuration of CT, MRI and digital subtraction angiography(DSA) in second and third level hospitals of China. Methods: The data came from the baseline survey of medical service capability in China’s second and third level hospitals. Results: CT have a high coverage in both second and third level hospitals, but the coverage of MRI in second level hospitals was only 50% and the DSA was 20%. The average daily inspection per CT and MRI was both higher than the recognized number which recommended by the experts. In the third level hospitals, the average quantity and the number of patients need to be serviced of these large medical equipments were both higher than the second level hospitals. Conclusion: The coverage of MRI and DSA needs to be promoted, and the standard of average daily inspection per CT and MRI should be improved. Referral of the mild patients to primary hospitals is a good way to reduce the medical pressure of large hospitals, and can also increase the equipment utilization ratio in second level hospitals.