摘要
标准YY/T 0741-2018规定了数字化X射线摄影系统成像质量指标成像空间分辨率、低对比度分辨率、动态范围、影像均匀性、有效成像区域、残影和伪影、(长骨)图像拼接性能、探测器校正及稳定性试验和量子探测效率(DQE),其中量子探测效率(DQE)是一种对成像系统的信号和噪声从输入到输出的传输能力的表达,以百分比表示,它是最能代表图像质量的测量指标,以观察者能够探测到图像中感兴趣的目标为目的,文章重点对此指标展开探讨。
Standard YY/T 0741-2018 specifies the imaging quality indicators of digital X-ray photography system: imaging spatial resolution, low contrast resolution, dynamic range, image uniformity, effective imaging area, residual and artifact,(long bone) image stitching performance, detector correction and stability test, and quantum detection efficiency(DQE). Among them, quantum detection efficiency(DQE) is a kind of imaging system. The expression of the transmission ability of signal and noise from input to output is expressed as a percentage. It is the most representative measurement index of image quality. The purpose of this paper is that the observer can detect the object of interest in the image.
作者
林联君
LIN Lian-jun(Zhejiang Institute of Medical Device Testing,Zhejiang Hangzhou 310018)
出处
《中国医疗器械信息》
2019年第21期24-27,共4页
China Medical Device Information
基金
浙江省省属科研院所扶持专项(项目编号:2017F50028)
