医用电气设备.用X射线诊断成像中带电离室和/或半导体探测器的剂量仪

[中文适用范围]： 本标准规定了用于X射线诊断成像的、基于电离室和/或半导体探测器的诊断剂量计在测量空气比释动能、空气比释动能长度积或空气比释动能率时的性能和相关结构要求。本标准适用于在X射线诊断成像中使用的带通气孔的电离室和/或半导体探测器的剂量计性能。适用范围涵盖摄影、包括乳腺摄影的透视和计算机断层扫描（CT），管电压不大于150 kV的光子辐射场。 [外文原描述]： IEC 61674:2012 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 radiography, including mammography, radioscopy and computed tomography, for X-radiation with generating potentials not greater than 150 kV. This International Standard is applicable to the performance of dosimeters with vented ionization chambers and/or semiconductor detectors as used in X-ray diagnostic imaging. The object of this standard is to establish requirements for a satisfactory level of performance for diagnostic dosimeters, and to standardize the methods for the determination of compliance with this level of performance. This standard is not concerned with the safety aspects of dosimeters. The diagnostic dosimeters covered by this standard are not intended for use in the patient environment and, therefore, the requirements for electrical safety applying to them are contained in IEC 61010-1. This second edition cancels and replaces the first edition and constitutes a technical revision.