IEC 61157:2007+A1:2013规定了报告医用超声诊断设备声输出的标准方法和格式。用于报告目的的数值代表给定离散或组合操作模式的最大输出条件的平均值，并且是从在水中进行的测量得出的。本标准中规定了强度参数，但这些参数被视为仅在与被测超声场相关的某些假设下才有意义的导出量。本国际标准适用于 医用超声诊断设备。它提供了一组描述声场的可追踪声学参数。它定义了用于报告声学输出信息的标准方法和格式。它还描述了推荐用于产生低声输出水平的设备的简化数据集。第二版取消并取代已出版的第一版 1992年。这个版本是一个小的修订。的变化 以下列出了与前一版本相关的内容:-本标准和参考标准IEC 61161和IEC 62127-1的维护；-并增加了关于合规的条款。2008年8月更正的内容已列入本副本。The 该标准的法文版尚未表决。 本合并版本由第二版（2007年）组成 及其修正案1（2013年）。因此，无须在 本出版物的补充。

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.