IEC 61674:2024规定了诊断剂量计的性能和一些相关结构要求，这些诊断剂量计用于在医学X射线成像（例如射线照相术、射线照相术和计算机断层扫描（CT））中测量空气比释动能、空气比释动能长度乘积或空气比释动能率，用于产生电位在20 kV至150 kV范围内的X射线。本文件适用于X射线诊断成像中使用的带有通风电离室和/或半导体探测器的剂量计的性能。 IEC 61674:2024取消并取代了2012年发布的第二版。本版构成技术修订版。 与上一版相比，此版本包括以下重大技术变更: a)对于乳房X线摄影，制造商规定了辐射质量的参考值；b)对于乳房X线照相术，制造商为响应的能量依赖性符合性测试提供最小额定辐射质量范围； c)取消了模拟显示器的符合性测试； d)范围重置的符合性测试，消除了泄漏和复合损耗的影响。这些测试已经包含在线性测试中，不能针对现代器械进行。对组合标准不确定度的估计进行了相应的变更； e)针对现代设备更新了电源可充电和电池供电剂量计的符合性测试

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