+AMD1:2016 CSV 医用电气设备 带电离室的剂量计 用于放射治疗

[中文适用范围]： 本国际标准规定了用于放射治疗的电离室剂量计的性能要求，旨在测量光子、电子、质子或重离子辐射场中的吸收剂量（水中）或空气比释动能（及其速率和空间分布）。本标准不适用于放射治疗设备中集成的剂量监测系统，也不适用于用于近距离治疗源校准和恒定度检查装置的入射式电离室。本标准适用于以下类型的剂量计：a) 场剂量计，通常用于1) 测量空气或模体中辐射束的比释动能或剂量；2) 患者体内皮肤表面或腔内剂量测量。b) 参考剂量计，通常用于场剂量计的校准；注：参考剂量计可用作场剂量计。c) 扫描剂量计，通常用于配合扫描系统（如自动水模体）进行相对剂量分布测量。本标准的目标是：- 为放射治疗剂量计建立令人满意的性能水平要求；- 标准化确定符合该性能水平的方法。规定了三个性能水平：适用于场剂量计的较低水平；适用于参考剂量计的较高水平；适用于扫描剂量计的特殊水平。 [外文原描述]： 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.