IEC 60731:2011+A1:2016规定了放射治疗剂量计的性能要求，用于测量吸收 对水或空气的剂量比释动能（及其速率和空间 分布）在光子、电子、质子或重离子辐射中 放射治疗中使用的场。剂量监测系统 纳入放射治疗机的不包括 这个标准，也没有使用再入式电离室 用于近距离放射治疗源校准和恒定性检查设备。 IEC 60731:2011适用于以下类型的剂量计: a)通常用于 1）体内皮肤表面或腔内剂量测量 病人。 2)体内皮肤表面或腔内剂量测量 病人。 b)通常用于校准的参考级剂量计 现场级剂量计； c)通常用于相对剂量的扫描级剂量计 使用扫描系统（例如 自动水幻影。 本标准的目的是: -确立令人满意的业绩水平的要求 用于放射治疗剂量计； -使确定是否符合以下规定的方法标准化 这种水平的性能。 规定了三个性能级别: -适用于field-class的性能水平较低 剂量计； -适用于参考级的更高水平的性能 剂量计； -适用于扫描类的特定性能级别 剂量计。 本第三版取消并取代已出版的第二版 1997年及其修正案1（2002）并构成技术 修订。技术修改与第二版 本标准涉及放射治疗的性能要求 用于测量水或水的吸收剂量的剂量计 重离子辐射场和扫描级空气释动能 通常用于相对剂量分布测量的剂量计 使用扫描系统，如自动水模。 本合并版本由第六版（2011年）组成 及其修正案1（2016）。因此，无须在 本出版物的补充。

IEC 60731:2011+A1:2016 specifies the performance requirements of radiotherapy dosimeters, intended for the measurement of absorbed dose to water or air kerma (and their rates and spatial distributions) in photon, electron, proton or heavy ion radiation fields as used in radiotherapy. The dose monitoring systems incorporated in radiotherapy treatment machines are not covered by this standard, neither are the re-entrant ionization chambers used for brachytherapy source calibration and constancy check devices. IEC 60731:2011 is applicable to the following types of dosimeter:
a) field-class dosimeters normally used for
1) in vivo skin surface or intracavitary measurements of dose on patients.
2) in vivo skin surface or intracavitary measurements of dose on patients.
b) reference-class dosimeters normally used for the calibration of field-class dosimeters;
c) scanning-class dosimeters normally used for relative dose distribution measurements with a scanning system such as an automatic water phantom.
The object of this standard is:
- to establish requirements for a satisfactory level of performance for radiotherapy dosimeters;
- to standardize methods for the determination of compliance with this level of performance.
Three levels of performance are specified:
- a lower level of performance applying to field-class dosimeters;
- a higher level of performance applying to reference-class dosimeters;
- a specific level of performance applying to scanning-class dosimeters.
This third edition cancels and replaces the second edition published in 1997 and its Amendment 1 (2002) and constitutes a technical revision. The technical modifications versus the second edition of this standard concerns performance requirements of radiotherapy dosimeters intended for the measurement of absorbed dose to water or air kerma in heavy ion radiation fields and scanning-class dosimeters normally used for relative dose distribution measurements with a scanning system such as an automatic water phantom. This consolidated version consists of the sixth edition (2011) and its amendment 1 (2016). Therefore, no need to order amendment in addition to this publication.