辐射防护仪器 人体安全检查.X射线系统成像性能的测量

[中文适用范围]： 本文件适用于利用X射线辐射进行安全检查的系统，用于检查不在车辆、集装箱或围栏内的人员。具体而言，本文件适用于用于检测被检查人员携带或体内物体的系统。 以下类型的系统包括在本文件的范围内： - 指定为移动或固定的系统。 - 采用初级辐射、背散射辐射、前向散射辐射（见附录D）或这些模式的某种组合来形成二维X射线图像的系统。 - 主要是成像但可能还具有补充功能的系统，例如材料辨别、自动主动或被动检测警报。本文件不涉及如何测试这些补充功能。 目的是提供测量和报告成像质量特性的标准方法，使系统制造商、潜在系统用户和其他相关方能够： a) 建立用于检查人员的筛查系统的预期技术性能的一致指标。此类技术性能测试补充了明确的检测测试和评估。在本文件中，“检测”指的是图像中的物品。 b) 提供可重复和可验证的成像性能数据，可用于比较不同供应商的系统。 c) 建立一个基线，可用于随时间校准系统或检测任何性能退化。（不打算将整个测试方法用于日常质量保证测试。） d) 为上述系统建立最低可接受的性能要求。 [外文原描述]： IEC 62709:2024 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition. IEC 62709:2024 applies to security screening systems that utilize X-ray radiation and are used to inspect people who are not inside vehicles, containers, or enclosures. Specifically, this document applies to systems used to detect objects carried on or within the body of the individual being inspected. The objective is to provide standard methods of measuring and reporting imaging quality characteristics that enable system manufacturers, potential system users and other interested parties to: a) Establish a consistent indicator of the expected technical performance of screening systems used for the inspection of individuals. Such technical performance testing complements explicit detection testing and evaluation. In this document "detection" refers to items in an image. b) Provide repeatable and verifiable imaging performance data that can be used to compare systems from different vendors. c) Establish a baseline that can be used over time to calibrate the system or detect any performance degradation. (It is not intended that the entire test method be employed for daily quality assurance testing.) d) Establish minimum acceptable performance requirements for the systems described above. This second edition cancels and replaces the first edition published in 2014. This edition includes the following significant technical changes with respect to the previous edition: a) Clarified the test procedures to maintain consistency with IEC 62463. b) Changed the term "spatial resolution" to "pentalith resolution". c) Modified some standard test conditions. d) Modified some terms and definitions. e) Changed the imaging requirements for transmission general-use systems.