DIN EN 61262-6:1995
医疗电气设备.光电X射线图象增强器特性.第6部分:对比度和伪影系数测定
Medical electrical equipment - Characteristics of electro-optical X-ray image intensifiers - Part 6: Determination of the contrast ratio and veiling glare index (IEC 61262-6:1994); German version EN 61262-6:1994