医用电气设备 光电X射线影像增强器特性 第5部分:次量子系数的测定

[中文适用范围]： 适用于医用电光 X 射线图像增强器，作为诊断 X 射线设备的组件。描述了一种通过分析单个伽马射线照片来确定 X 射线图像增强器的探测量子效率 (DQE) 的方法 [外文原描述]： Applies to electro-optical X-ray image intensifiers for medical use, as components of diagnostic X-ray equipment. Describes a method of determining the detective quantum efficiency (DQE) of X-ray image intensifiers by analysis of the single gamma-ray photon scintillation pulse-height spectrum. The method applies only to electro-optical X-ray image intensifiers having output radiance decay rates approximately equal to or faster than that of a P-20 phosphor.