CT安全使用.ppt

1、CT安全使用,医学工程中心 张帅,Introduction,Safety is the number one concern when you use a CT system. To protect yourself and others, you must be aware of the various potential hazards in a CT scanner and the techniques to control them.,purpose,Identify the various causes and types of hazards in CT systems Recog

2、nize commonly available safety resources in your organization,Common CT Hazards,Normal CT component conditions, such as heat from the x-ray tube or tube movement when the alignment light is pressed. Improperly-working CT components, such as generator overloads. Medical equipment and devices, such as

3、 needles, tubing, or gauze. Service engineers who ignore safety and electro-static discharge (ESD) guidelines, do not use correct procedures, skip steps, or do not use correct tools.,Hazards Types,Pathogenic Mechanical Electrical Radiation Thermal Laser,Resources,Documentation, Training, and Equipme

4、nt Documentation on CT system: includes operator manual procedures and the correct tools to use during operate. Courses or manuals on environmental health and safety: includes techniques to reduce your risk to all types of hazards. Review this material before you perform service. Personal protective

5、 equipment (PPE): may include safety shoes, safety glasses, etc.,Emergency Switches,All CT systems have an emergency room switch and emergency system switches. Find them before you service a system. Room switch: disables the power to the A-1 contactor. System switches: Located on and inside the gant

6、ry and on the console. Disable power to X-ray generator assembly. Abort Scan immediately. Table and Gantry drive assembly,Hazard Locations,Factory-supplied labels mounted on the gantry, table, PDU, and operator console show the locations of possible hazards. These labels are reminders only. Over tim

7、e and use, labels may become illegible or lost. Rely on your use procedures, common sense, and awareness of the equipment status and conditions,Pathogenic,来源：血液、造影剂、病人体液、医疗输液 措施： 个人防护工具：手套、口罩 保持清洁，发现及时清理 输液管不受力，不揪扯,Mechanical,来源： 运动部件的运动 不合理的摆位或操作,措施 正确摆位 固定装置的使用 密切关注病人 危险区域内禁放东西 急停开关的使用 防止躁动病人脱落,El

8、ectrical,设备采取等电位接地 局部发生问题有可能引起漏电 确保无异物、液体进入设备内部 病人身上连接多种设备时，漏电流总合 严禁打开系统组件,Radiation,辐射损伤 利益最大化原则 辐射防护,措施 密切关注曝光指示灯 合适的扫描条件，Dose Care等 急停开关的使用 专用设备，关键部位的防护 机房的弱辐射区 减少辐射负载,剂量曲线图,Thermal,远离发热部件,Laser,不直视 病人禁止戴眼镜或隐形眼镜 不使用其他光学仪器,系统安全,指不造成不可逆改变的保证系统安全使用的方法 通常包括保证系统的适合的工作环境，正确的使用方法等,电器安全 不与其他设备混合使用电源 防止液体进入设备,承重 床的承重为200Kg 其