医用超声源计量比对结果与归一化偏差

Measurement comparison results of medical ultrasonic source and normalized deviation

依据JJG 639-1998《医用超声诊断仪超声源》组织实施了2015年浙江省"医用超声诊断仪超声源检定装置超声功率"计量比对。有23个计量技术机构参与了计量比对项目。以中国计量科学研究院测量数据与主导实验室测量结果的平均值作为参考量值,采用归一化偏差En算法对参比实验室的测量结果进行一致性评判。针对比对中存在的问题做了研究分析,并就完善医用超声源计量检定提出合理化建议。

According to JJG 639-1998 Ultrasonic Source for Medical Ultrasonic Diagnostic Equipment, the measurement comparison of ultrasonic power of vertification device for ultrasonic source for medical ultrasonic diagnostic equipment was organized in Zhejiang province in2015. 23 technical in stitutes of metrology participated in the measurement comparison.Taking the average measurement results of National Instituteof Metrology (NIM) and leading laboratory as the reference value, the consistency of measurement results given by participant laboratories was evaluated by adopting the normalized deviation algorithm. The existing problems in the comparison were researched and analyzed, and some reasonable suggestions for improving the metrological verification of medical ultrasonic source were presented.