标准摘要
[中文适用范围]: 添加:本专用标准规定了使用后装技术对患者进行近距离治疗的自动控制设备的安全性要求。本标准规定了仅包含和使用 beta@ gamma@ 和中子发射密封放射源的自动控制后装设备 C 的要求@?C 自动将密封的放射源从存储容器驱动到源施加器内的治疗位置,并将源返回到存储容器@?C,该存储容器设计用于连接到患者@和?C,其中放射性源的运动由设备根据规定的程序使用动力机构自动执行,其变化由控制定时器和定时装置控制,这些定时器和定时装置是可编程电子子系统- 系统(PESS)(计算机或微处理器)或不可编程系统。本标准规定了对在有资格人员监督下使用的设备的要求; C 按预定的时间间隔进行维护; C 接受定期检查用户。本标准没有规定与设备一起使用的密封放射源的要求。此类要求在其他标准中有所规定(见 6.8.3)。本标准的要求基于以下假设: C 有一个治疗计划,其中规定了治疗参数@的适当值和 C 源强度(S) )设备使用的放射源是已知的。本标准包括旨在确保设备可以实现治疗参数的规定值的要求,特别是:?C所选的放射源(S) 相对于源施加器以选定的配置在源施加器内定位或移动;?C 辐照由选定的放射性源配置执行选定的持续时间;?C 辐照由设备执行,不会引起对操作者或周围环境中的其他人造成不必要的风险。 [外文原描述]: The use of afterloading equipment for brachytherapy purposes may expose patients to danger if the equipment fails to deliver the required dose to the patient, or if the equipment design does not satisfy standards of electrical and mechanical safety. The equipment may also cause danger to persons in the vicinity if the equipment itself fails to contain the radioactive source(s) adequately within the storage container(s) and/or if there are inadequacies in the design of the treatment room. This Particular Standard establishes requirements to be complied with by manufacturers in the design and construction of afterloading equipment for use in temporary brachytherapy procedures. Its purpose is to identify those features of design that are regarded, at the present time, as essential for the safe operation of such equipment. It places limits on the degradation of equipment performance beyond which it can be presumed that a fault condition exists and where an interlock then operates to return the radioactive source(s) to the storage container(s) and afterwards to prevent continued operation of the equipment.
英文名称Medical electrical equipment - Part 2-17: Particular requirements for the safety of automatically-controlled brachytherapy afterloading equipment