目的 建立日立ARIETTA60超声成像系统成像功能的一种预防性维护方法.方法 在Matlab平台上,开发估算超声图像信噪比的软件,计算抽取样本的信噪比并分析其分布形式,以此为基础建立统计检验模型.结果 发现ARIETTA60的超声图像信噪比呈正态分布,建立3组成像正常的信噪比数据组为配对样本组的配对样本t检验模型.结论 此模型可以用于检测日立ARIETTA60超声成像系统成像功能的情况.%Objective To develop a preventiove maintenance of the HITACHI ARIETTA60 ultrasonic imaging system's imaging function. Methods A software that could estimate the signal to noise ration (SNR) of the ultrasonic images from the HITACHI ARIETTA60 ultrasonic imaging system in Matlab was developed. Then a statistical test model was built by conducting analysis on the distribution of SNR. Results It was found that the ultrasonic image signal-to-noise ratio of ARIETTA60 was in a normal distribution. And the paired-samples t model in three sample of SNR from normol images was developed. Conclusion This model can be used to detect the imaging function of Hitachi ARIETTA60 ultrasound imaging system.
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