基于Minitab的磁共振成像设备性能长期稳定性分析  

Long-Term Stability Analysis of MRI Equipment Performance Based on Minitab

作　　者：张文龙 董硕[1] 李东[1] 柳渊[1] 花城 吴航[1] ZHANG Wenlong;DONG Shuo;LI Dong;LIU Yuan;HUA Cheng;WU Hang(Department of Medical Engineering,Xuanwu Hospital,Capital Medical University,Beijing 100053,China)

机构地区：[1]首都医科大学宣武医院医学工程处,北京100053

出　　处：《中国医疗设备》2023年第12期17-22,共6页China Medical Devices

基　　金：工业和信息化部产业技术基础公共服务平台项目(2021-0179-1-1)。

摘　　要：目的 运用Minitab对磁共振成像(Magnetic Resonance Imaging,MRI)设备性能的长期稳定性进行分析。方法 利用Minitab17.0软件分析3台MRI设备(MRI-1、MRI-2和MRI-3)性能的长期稳定性,分析项目包括影像均匀性、信噪比、层厚和纵横比;使用时间轴序列法对性能指标中的空间分辨力进行研究。结果 性能检测多数项目的长期质量控制过程为Ⅰ级,过程性能指数Pp>1.67;MRI-1和MRI-2设备所有检测项目过程性能均为Ⅱ级及以上;MRI-3设备的影像均匀性处于Ⅳ级,应查找原因并增加检测频次。结论 通过使用Minitab对磁共振成像设备进行过程能力分析,可以客观地判断MRI设备生命周期内的性能稳定性,有助于了解设备运行状态,确定质量控制检测频率;通过过程性能分析结果可以判断设备保养情况和关键部件更换周期,保障设备性能处于良好状态,为诊疗服务提供可靠的保障。Objective To analyze the long-term stability of magnetic resonance imaging(MRI)equipment performance using Minitab.Methods The Minitab 17.0 software was used to analyze the long-term stability of the performance of three MRI devices(MRI-1,MRI-2 and MRI-3).The analysis of performance test items included image homogeneity,signal-to-noise ratio,slice thickness,and aspect ratio.The spatial resolution of MRI was analyzed using time-series method.Results The long-term quality control process for most performance testing items was classified as levelⅠ,with a process performance index Pp>1.67;for MRI-1 and MRI-2 devices,the process performance of all testing items was at least levelⅡor higher;the image homogeneity of MRI-3 equipment was classified as levelⅣ,indicating that the influence factors should be identified and the frequency of testing should be increased.Conclusion By using Minitab to perform process capability analysis on MRI equipment,it is possible to objectively assess the performance stability throughout the life cycle of MRI equipment,which is helpful in monitoring the operation status of the equipment and determining the frequency of quality control testing;the results of process performance analysis can be used to assess the maintenance status of the equipment and determine the replacement cycle of key components.This ensures that the performance of equipment remains in a good state,provides a reliable foundation for diagnosis and therapeutic services.

关 键 词：Minitab 磁共振成像设备 长期稳定性 过程性能指数 

分 类 号：R197.39[医药卫生—卫生事业管理]