标准摘要
[中文适用范围]： 本国际标准适用于医疗诊断超声设备。它提供了一组可追溯的声学参数，描述了声场。它定义了报告声学输出信息的标准方法和格式。它还描述了一个推荐用于产生低声学输出水平的设备的简化数据集。 注：本标准格式中列出的信息可用于： a) 生物效应研究的暴露计划； b) 前瞻性流行病学研究中使用与本标准中报告的暴露条件相似的暴露数据。在缺乏实际暴露数据用于回顾性流行病学研究的情况下，本标准格式中列出的信息也可谨慎使用。 [外文原描述]： IEC 61157:2007+A1:2013 specifies a standard means and format for the reporting of the acoustic output of medical diagnostic ultrasonic equipment. The numerical values for reporting purposes represent the average values for the maximum output conditions for a given discrete- or combined-operating mode and are derived from measurements made in water. Intensity parameters are specified in this standard, but these are regarded as derived quantities that are meaningful only under certain assumptions related to the ultrasonic field being measured. This International Standard is applicable to medical diagnostic ultrasonic equipment. It provides a set of traceable acoustic parameters describing the acoustic fields. It defines a standard means and format for the reporting of the acoustic output information. It also describes a reduced dataset recommended for equipment generating low acoustic output levels. This second edition cancels and replaces the first edition published in 1992. This edition constitutes a minor revision. The changes with respect to the previous edition are listed hereafter: - maintenance on this standard and the referenced standards IEC 61161 and IEC 62127-1; - and a clause on compliance has been added. The contents of the corrigendum of August 2008 have been included in this copy. The French version of this standard has not been voted upon. This consolidated version consists of the second edition (2007) and its amendment 1 (2013). Therefore, no need to order amendment in addition to this publication.
英文名称Standard means for the reporting of the acoustic output of medicaldiagnostic ultrasonic equipment