Objective To troubleshoot and summary the preventive measures of cyclotron radio frequency through analysis of three cases of failures, with the aim to reduce the occurrence rate of failure and improve equipment stability. Methods We selected three cases of cyclotron radio frequency failures in Nanjing General Hospital during 2012~2015, analyzed the reasons for maintenance and targeted prophylaxis. Results Through replacing equipment parts, we improved the daily operation conditions, made in-depth repair, found out the solutions and summed up relevant experience. Conclusion The cyclotron is complex and complicated failures happens frequently, for some, it's easy to find out the reason, while for some, must go deep into the bottom circuit to make detailed analysis according to the principle. And then conduct careful search and put forward the preventive measures to avoid unnecessary failures.%目的 通过对回旋加速器射频的3例故障进行分析,找到原因,排除故障并总结预防措施,以期减少故障率的发生,提高设备稳定性.方法 通过我院2012~2015年发生的3次射频的疑难故障情况,分析其发生原因,进行维护和针对性预防.结果 通过更换设备配件,改善日常运行条件,深入维修,解决了这几例疑难问题,并总结了相关经验.结论 回旋加速器系统复杂,疑难故障较多,有的故障原因很简单但很难找到,有的必须深入底层电路,根据原理详细分析,仔细查找,做好分析提出针对性预防措施,可以避免回旋加速器出现不必要的故障.
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