基于仿组织体模的医用超声诊断仪性能检测

      Performance Testing of Medical Ultrasound Diagnostic Equipment Based on Tissue-Mimicking Phantom

      • 摘要: 该研究旨在通过仿组织体模对医用超声诊断仪的多项关键性能指标进行检测,以确保其在临床应用中的有效性,并探究这些性能指标随时间的变化规律。研究首先抽取17台在用医用超声诊断仪,依据检定规程对探测深度、盲区、侧向分辨力、轴向分辨力、几何位置示值误差及囊性病灶直径误差进行检测。此外,研究还回溯了19台医用超声诊断仪过去三年的性能检测数据并进行统计分析。经检测,17台医用超声诊断仪的各项性能指标均符合检定规程的要求,表明其在临床应用中能够稳定、可靠地提供高质量的超声诊断图像和数据。同时,回溯数据表明19台超声诊断仪随着使用年限的增长,设备在远场处的分辨能力有所下降,囊性病灶直径误差有所增加。因此,建议医疗机构建立医用超声诊断仪的定期检测和维护制度,对超声诊断仪进行定期的性能评估和保养,以确保其保持良好的工作状态。

         

        Abstract: This study aims to ensure the effectiveness of medical ultrasound diagnostic equipment in clinical applications by testing multiple key performance indicators using tissue-mimicking phantoms and exploring the changes in these performance indicators over time. Firstly, 17 in-service medical ultrasound diagnostic equipments were selected, and their depth of penetration, dead zone, lateral resolution, axial resolution, geometric position error, and cystic focal diameter error were tested according to the verification regulations. In addition, the study retrospectively analyzed the performance testing data of 19 medical ultrasound diagnostic equipments over the past three consecutive years and conducted statistical analysis. Through the testing, all performance indicators of the 17 equipments met the requirements of the verification regulations, indicating that they can stably and reliably provide high-quality ultrasound diagnostic images and data in clinical applications. Meanwhile, retrospective data showed that with the increase with the increase in service life, the resolving ability at the far field of the 19 equipments decreased, and the cystic focal diameter error increased. Therefore, it is recommended that medical institutions establish a regular testing and maintenance system for medical ultrasound diagnostic equipment, conducting regular performance evaluations and maintenance to ensure its good working condition.

         

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