无损检测.存储式磷成像板工业计算机射线照相.第1部分:系统分类

[中文适用范围]： ISO 16371-1 规定带有存储荧光体成像板（IP）的工业计算机射线照相（CR）系统的基本参数，旨在实现经济、满意且可重复的结果。本部分规定了CR系统的性能及其系统扫描器和存储荧光体成像板（IP）对应参数的测量方法。它描述了与指定金属增感屏组合的此类系统的分类。其目的是确保图像质量（受扫描器-IP系统影响的部分）符合ISO 16371-2的要求。本部分涉及ISO 11699-1中定义的胶片射线照相要求。本部分定义了不同级别的系统测试。描述了更复杂的测试，可确定精确的系统参数，用于对不同供应商的系统进行分类并使其对用户具有可比性。这些测试被指定为制造商测试，其中一些需要特殊工具，通常在用户实验室不可用。因此，还描述了较简单的用户测试，旨在快速测试CR系统的质量及长期稳定性。影响CR图像质量的因素包括几何不清晰度、信噪比、散射线和对比度灵敏度。还有几个其他因素（例如扫描参数）影响使用光学扫描器读取曝光IP上图像的准确性。最准确的方法是通过本部分所述的制造商测试确定质量因素。推荐了用于实际用户测试的独立测试靶，可用于质量保证。这些测试可以单独进行，也可以使用CR幻象（附录B）进行。该CR幻象包含了多种基本质量评估方法以及CR系统正确运行的相关方法，包括用于读取曝光板的扫描器和用于正确擦除IP以供未来使用。本部分中的CR系统类别不指代任何特定制造商的成像板。CR系统类别结果是特定成像板与曝光条件（特别是总曝光量）、扫描器类型及扫描参数的结合。 [外文原描述]： ISO 16371-1:2011 specifies fundamental parameters of computed radiography systems with the aim of enabling satisfactory and repeatable results to be obtained economically. The techniques are based both on fundamental theory and test measurements. ISO 16371-1:2011 specifies the performance of computed radiography (CR) systems and the measurement of the corresponding parameters for the system scanner and storage phosphor imaging plate (IP). It describes the classification of these systems in combination with specified metal screens for industrial radiography. It is intended to ensure that the quality of images, as far as this is influenced by the scanner-IP system, is in conformity with the requirements of ISO 16371-2. ISO 16371-1:2011 relates to the requirements of film radiography defined in ISO 11699-1. ISO 16371-1:2011 defines system tests at different levels. More complicated tests are described, which allow the determination of exact system parameters. They can be used to classify the systems of different suppliers and make them comparable for users. These tests are specified as manufacturer tests. Some of them require special tools, which are usually not available in user laboratories. Therefore, simpler user tests are also described, which are designed for a fast test of the quality of CR systems and long term stability. There are several factors affecting the quality of a CR image including geometrical un-sharpness, signal/noise ratio, scatter and contrast sensitivity. There are several additional factors (e.g. scanning parameters), which affect the accurate reading of images on exposed IPs using an optical scanner. The quality factors can be determined most accurately by the manufacturer tests as described in ISO 16371-1:2011. Individual test targets, which are recommended for practical user tests, are described for quality assurance. These tests can be carried out either separately or by the use of the CR Phantom (Annex B). This CR Phantom incorporates many of the basic quality assessment methods and those associated with the correct functioning of a CR system, including the scanner, for reading exposed plates and in correctly erasing IPs for future use of each plate. The CR System classes in ISO 16371-1:2011 do not refer to any particular manufacturer's Imaging Plates. A CR system class results from the use of a particular imaging plate together with the exposure conditions (particularly total exposure), the scanner type and the scanning parameters.