GB 4505-1984
Abolished
YY/T 0479-2026
Pending
Industry standards-Medicine
YY/T 0479-2026 Determination of the maximum symmetrical radiation field of X-ray tube assemblies and X-ray source assemblies for medical diagnosis
YY/T 0479-2026 Determination of the maximum symmetrical radiation field of X-ray tube assemblies and X-ray source assemblies for medical diagnosis
Basic Information
Standard Code:
YY/T 0479-2026
Standard Type:
Industry standards
Standard Status:
Pending
is_force_gb:
no
CCS Name:
Medical radiation equipment
ICS Name:
X-ray imaging equipment
Publish Date:
2026-03-09
Implement Date:
2027-03-01
Publisher:
国家药品监督管理局
Technical Committee:
全国医用电器标准化技术委员会医用X射线设备及用具分技术委员会(SAC/TC 10/SC 1)
Pages:
16 pages
Scope
本文件描述了距焦点规定距离处最大几何对称辐射野的测定方法,该处沿辐射野主轴的空气比释动
能率百分比不低于允许值。
注1:在实际应用中,空气比释动能或空气比释动能率是量化X 射线性能的最实用的物理测量指标。
本文件适用于X 射线源组件和X 射线管组件。
注2:对于特定的医用电气系统,如果需要特殊的辐射野,本文件不适用(例如,使用带蝶形滤过的CT 准直器),适用
适当的系统特定标准。
如果多个焦点不是重叠的,则每个焦点都需有自己的基准轴,然后能分别给出每个焦点的最大辐射野。
注3:随着X 射线管在使用过程中的老化,最大对称辐射野可能会从其初始值发生变化。
注4:在附录A 中描述了本文件的历史背景。
Development Information
Drafting Units:
辽宁省医疗器械检验检测院、浙江省医疗器械审评中心、杭州凯龙医疗器械有限公司、西门子爱克斯射线真空技术(无锡)有限公司、武汉联影医疗科技有限公司
Drafting Persons:
李非、王越、朱文武、张振能、卢山、田佳甲、马元昊、柏荣庆
Replace the following standards
Referenced Standards
GB 9706.1-2020 Medical electrical equipment—Part 1:General requirements for basic safety and essential performance
GB 9706.103-2020 Medical electrical equipment—Part 1-3:General requirements for basic safety and essential performance—Collateral Standard:Radiation protection in diagnostic X-ray equipment
YY/T 0063-2024 Medical electrical equipment—X-ray tube assemblies for medical diagnosis—Focal spot dimensions and related characteristics
YY/T 0064-2016 Electrical and loading characteristics of X-ray tube assemblies for medical diagnosis
IEC TR 60788:2004
Adopt standards
IEC 60806:2022
Related Standards
GB 5579-1985
Abolished
GB 5579-1985 High-voltage cable plug and socket connections for medical X-ray equipment
GB 5665-1985
Abolished
GB 5665-1985 General specification for mechanical units of medical diagnostic X-ray equipment
GB 10151-1988
Abolished
GB 10151-1988 Medical X-ray equipment—Specification for high voltage cable plug and socket connections
GB/T 10149-1988
Active
GB/T 10149-1988 Terminology and symbol for medical X-ray equipment
GB 11239-1989
Replaced