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现行 EN 14784-1:2005
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Non-destructive testing - Industrial computed radiography with storage phosphor imaging plates - Part 1: Classification of systems 非破坏性测试 - 工业计算机摄影与存储荧光成像板 - 第1部分:系统分类
发布日期: 2005-08-24
实施日期: 2005-08-24
该欧洲标准规定了计算机放射学系统的基本参数,目的是使经济上获得令人满意和可重复的结果。这些技术基于基础理论和测试测量。该欧洲标准规定了计算机放射学(CR)系统的性能和系统扫描仪和荧光成像板(IP)的相应参数的测量。它描述了这些系统与用于工业射线照相的特0716定金属屏幕的分类。旨在确保图像的质量 - 只要受到扫描仪IP系统的影响 - 符合本标准第2部分的要求。该标准涉及EN 584-1和ISO 11699-1中定义的胶片放射照相术的要求。 该欧洲标准定义了不同级别的系统测试。描述了更复杂的测试,其允许确定精确的系统参数。它们可用于对不同供0716应商的系统进行分类,并使其与用户相当。这些测试被指定为制造商测试。其中一些需要特殊工具,通常在用户实验室中不可用。因此,还描述了更简单的用户测试,哪一个
This European standard 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. This European standard specifies the performance of computed radiography (CR) systems and the measurement of the corresponding parameters for the system scanner and 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 Part 2 of this standard. The standard relates to the requirements of film radiography defined in EN 584-1 and ISO 11699-1. This European standard 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 unsharpness, 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.
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归口单位: CEN/TC 138-
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