标准摘要
[中文适用范围]： 本文件规定了用于测量医疗X射线成像中光子辐射场中的空气比释动能、空气比释动能长度积或空气比释动能率的诊断剂量计的性能和一些相关构造要求，适用于生成电位在20 kV至150 kV范围内的X射线。 本文件适用于使用通风电离室和/或半导体探测器的剂量计在X射线诊断成像中的性能。 本文件的目的是：a) 为诊断剂量计建立满意的性能水平要求；b) 标准化确定符合该性能水平的方法。 本文件不涉及剂量计的安全方面。本文件涵盖的诊断剂量计不适用于患者环境，因此其电气安全要求包含在IEC 61010-1中。 [外文原描述]： IEC 61674:2024 specifies the performance and some related constructional requirements of DIAGNOSTIC DOSIMETERS intended for the measurement of AIR KERMA, AIR KERMA LENGTH PRODUCT or AIR KERMA RATE, in photon radiation fields used in medical X-ray imaging, such as RADIOGRAPHY, RADIOSCOPY and COMPUTED TOMOGRAPHY (CT), for X-RADIATION with generating potentials in the range of 20 kV to 150 kV. This document is applicable to the performance of DOSIMETERS with VENTED IONIZATION CHAMBERS and/or SEMICONDUCTOR DETECTORS as used in X-ray diagnostic imaging. IEC 61674:2024 cancels and replaces the second edition published in 2012. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) for mammography, the manufacturer specifies the REFERENCE VALUE for the RADIATION QUALITY; b) for mammography, the manufacturer provides the MINIMUM RATED RANGE of RADIATION QUALITIES for the compliance test on energy dependence of response; c) the compliance test for analogue displays was removed; d) the compliance tests for range reset, the effect of leakage and recombination losses were removed. These tests are already covered by the test on linearity and cannot be conducted for modern devices. The estimation of COMBINED STANDARD UNCERTAINTY was changed accordingly; e) the compliance test for mains rechargeable and battery-operated dosimeters were updated for modern devices
英文名称Medical electrical equipment - Dosimeters with ionization chambers and/or semiconductor detectors as used in X-ray diagnostic imaging