1.1 本指南提供了有关计算机射线照相（CR）的基本原理和物理原理、理解基本CR过程所需的定义和术语的一般教程信息。还介绍了在建立技术和基本图像处理方法期间通常遇到的一些限制。本指南没有为特定的最终用户检查应用提供特定的技术或验收标准。本指南中提供的信息可能与以下标准结合使用 1.2 。 1.2 一般检查应用的CR技术可在实践中找到 2003年2月 CR系统的技术鉴定属性可在实践中找到 2445欧元 CR系统技术性能等级的分类标准可在《实践》中找到 2446欧元 .参考图像标准 E2422辆 ， 2260欧元 和 2269欧元 包含数字参考验收插图。 1.3 以国际单位制表示的数值应视为标准。括号中给出的英寸磅单位仅供参考。 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 4.1 本指南旨在作为教程和参考信息的来源，可供合格CR人员在特定应用中建立计算机射线照相技术和程序时使用。本指南中提供的所有材料可能不适合所有级别的计算机射线照相人员。 4.2 本指南旨在建立在《指南》中已确立的射线照相基础知识（即胶片系统）的基础上 电子94 同样，本指南中提供的材料并非“包罗万象”，而是旨在解决基本CR主题和问题，这些主题和问题补充了中所述的计算机射线照相的一般知识 1.2 和 3.2.28 。 4.3 本指南中提供的材料可能有助于开发- 由合格CR人员设计的用户培训计划或执行类似功能的活动。计算机射线照相被认为是一种快速发展的检查技术，需要用户掌握最新CR设备和技术创新的知识。部分 11 本指南包含的技术参考资料可能有助于进一步提高与计算机射线照相术相关的知识。

1.1 This guide provides general tutorial information regarding the fundamental and physical principles of computed radiography (CR), definitions and terminology required to understand the basic CR process. An introduction to some of the limitations that are typically encountered during the establishment of techniques and basic image processing methods are also provided. This guide does not provide specific techniques or acceptance criteria for specific end-user inspection applications. Information presented within this guide may be useful in conjunction with those standards of 1.2 . 1.2 CR techniques for general inspection applications may be found in Practice E2033 . Technical qualification attributes for CR systems may be found in Practice E2445 . Criteria for classification of CR system technical performance levels may be found in Practice E2446 . Reference Images Standards E2422 , E2660 , and E2669 contain digital reference acceptance illustrations. 1.3 The values stated in SI units are to be regarded as the standard. The inch-pound units given in parentheses are for information only. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 4.1 This guide is intended as a source of tutorial and reference information that can be used during establishment of computed radiography techniques and procedures by qualified CR personnel for specific applications. All materials presented within this guide may not be suited for all levels of computed radiographic personnel. 4.2 This guide is intended to build upon an established basic knowledge of radiographic fundamentals (that is, film systems) as may be found in Guide E94 . Similarly, materials presented within this guide are not intended as “all-inclusive” but are intended to address basic CR topics and issues that complement a general knowledge of computed radiography as described in 1.2 and 3.2.28 . 4.3 Materials presented within this guide may be useful in the development of end-user training programs designed by qualified CR personnel or activities that perform similar functions. Computed radiography is considered a rapidly advancing inspection technology that will require the user maintain knowledge of the latest CR apparatus and technique innovations. Section 11 of this guide contains technical reference materials that may be useful in further advancement of knowledge associated with computed radiography.