基于改进失效模式与影响分析的宽体CT设备可靠性分析

许文灏; 金玮; 胡顺东

doi:10.12455/j.issn.1671-7104.250849

基于改进失效模式与影响分析的宽体CT设备可靠性分析

Reliability Analysis of Wide-Detector Computed Tomography Equipment Based on Improved FMEA

摘要

摘要:
目的构建一种改进的失效模式与影响分析（failure mode and effects analysis，FMEA）模型，以提升宽体探测器计算机断层扫描（computed tomography，CT）设备可靠性评估的精准性。
方法组建多学科专家小组，采用评分制体系量化评价各类潜在失效模式，并引入专家权重进行加权计算，从而实现风险优先序位的客观排序。
结果应用该模型成功识别出球管过热与系统通信中断为最高风险失效模式，同时量化揭示了不同临床使用模式下设备可靠性存在显著差异。
结论改进的FMEA方法能够有效识别关键失效环节，为制定差异化、精准化的预防性维护策略提供了可靠依据，有助于保障设备的持续稳定运行。

Abstract:
Objective An improved failure mode and effects analysis (FMEA) model is constructed to enhance the accuracy of reliability assessment for Wide-Detector computed tomography equipment.
Methods A multidisciplinary expert panel is established. A scoring system is used to quantitatively evaluate various potential failure modes, and expert weights are introduced for weighted calculation to achieve objective ranking of risk priority.
Results The overheating of the X-ray tube and system communication interruption are identified as the highest-risk failure modes. Significant differences in equipment reliability under different clinical usage patterns are quantitatively revealed.
Conclusions The improved FMEA method can effectively identify key failure links, providing a reliable basis for formulating differentiated and precise preventive maintenance strategies, which is helpful for ensuring the continuous and stable operation of equipment.

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