DIN EN ISO 19232-4-2013 无损检测.辐射摄影的图像质量.第4部分:图像质量值和图像质量表的试验评价(ISO 19232-4-2013).德文版本EN ISO 19232-4-2013
Non-destructive testing - Image quality of radiographs - Part 4: Experimental evaluation of image quality values and image quality tables (ISO 19232-4:2013); German version EN ISO 19232-4:2013