PET/MR设备的临床可用性评价方法研究

Study on the Clinical Usability and Evaluation Methods of PET/MR Equipment

目的 探讨正电子发射型磁共振成像(Positron Emission Tomography/Magnetic Resonance Imaging,PET/MR)设备的人机接口协同性,探讨该类设备在临床中的可用性评价方法。方法 采用层次分析法构建可用性评价体系,设立专家组并计算专家权威系数,以德尔菲法设计可用性调查问卷,以操作设备的技师和医生为调查对象,收集全国范围内联影PET/MR设备的问卷打分表。结果 共收集79份调查问卷,涉及医院18家。其中生理信号门控单元接口可用性评价评分最低,PET无源质控可用性评价评分最高;副高级、高级职称人员对指标评分略高于中级及以下人员;人员的不同操作时长对各项接口的评分具有相同趋势,使用时长在3个月内的操作者评分明显低于另外两组,差异均有统计学意义(P<0.05);不同操作时长人员对6个特定评价参数评分差异均有统计学意义(P<0.05)。结论 基于层次分析法建立的可用性评价体系能够用于PET/MR设备临床可用性评价,基于德尔菲法形成的可用性调查问卷为探讨PET/MR设备可用性评价方法提供参考。

Objective To explore the human-machine interface collaboration of positron emission tomography/magnetic resonance imaging(PET/MR)equipment,and to explore the clinical usability evaluation method of this kind of equipment.Methods The usability evaluation system was established by using analytic hierarchy process,an expert group was set up and the expert authority coefficient was calculated.The usability questionnaire was designed by Delphi method,and the technicians and doctors who operated the equipment were investigated,and the questionnaire scoring table of UIH PET/MR equipment was collected nationwide.Results A total of 79 survey questionnaires were collected,involving 18 hospitals.The usability evaluation score of the physiological signal gating unit interface was the lowest,and the PET passive quality control usability evaluation score was the highest.Personnel with deputy senior or senior professional titles had slightly higher scores on indicators than those with intermediate or lower levels.The scores of personnel with different operating hours on various interfaces had the same trend,and the scores of users within 3 months were significantly lower than the other two groups,with significant differences(P<0.05).There were significant differences in the scores of six specific evaluation parameters among personnel with different operating hours(P<0.05).Conclusion The usability evaluation system established based on the analytic hierarchy process can be used for the clinical usability evaluation of PET/MR devices.The usability survey questionnaire formed based on the Delphi method provides a strong reference for exploring the usability evaluation methods of PET/MR devices.