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Specification for testing of quality control in screen film mammography systems
| Obsolete |
Standard similar to WS 518-2017 GBZ 130 | GBZ/T 250 | GBZ/T 201.1 | WS 523 | WS/T 519 | WS 519 | Basic data | Standard ID | WS 518-2017 (WS518-2017) | | Description (Translated English) | Specification for testing of quality control in screen film mammography systems | | Sector / Industry | Health Industry Standard | | Classification of Chinese Standard | C57 | | Classification of International Standard | 13.100 | | Word Count Estimation | 12,119 | | Date of Issue | 2017-04-10 | | Date of Implementation | 2017-10-01 | | Older Standard (superseded by this standard) | GBZ 186-2007 | | Issuing agency(ies) | National Health and Family Planning Commission of the People's Republic of China | | Summary | This standard specifies the requirements and methods for quality control testing of mammography. This standard applies to breast X-ray film photography system quality control detection. | WS 518-2017: Specification for testing of quality control in screen film mammography systems---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Specification for testing of quality control in screen film mammography systems
ICS 13.100
C57
People's Republic of China health industry standards
Instead of GBZ 186-2007
Quality control of mammography radiography system
Testing specifications
2017-04-10 released
2017-10-01 implementation
People's Republic of China National Health and Family Planning Commission released
Directory
Foreword Ⅲ
1 Scope 1
2 Terms and definitions 1
3 quality control testing requirements 2
4 quality control test items and methods 3
Appendix A (Normative) Breast X-ray film photography system testing items and technical requirements 6
Appendix B (informative) Breast average dose calculation 7
Reference 9
Foreword
This standard Chapter 3 and Appendix A is mandatory, the rest is recommended.
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GBZ 186-2007 "mammography quality control testing norms", compared with the GBZ 186-2007, the main
Technical changes are as follows.
--- Modify the subject;
--- Increased directory;
--- Modify the scope of the standard;
--- Modify some terms and definitions;
--- Modify the general requirements of quality control testing;
--- Increased acceptance of the standard photo density testing requirements;
--- Modify the coefficient of variation formula;
--- Modify the stability test on the chest wall side field alignment and automatic exposure control cycle;
--- Remove the consistency of the light/radiation field state detection requirements;
--- Added automatic exposure control acceptance testing requirements;
--- Modify the detection of the semi-value layer requirements;
--- Modify the average breast dose testing methods;
--- Removed the detection of the effective focus size;
--- Deleted the exposure time deviation from the state of detection requirements.
This standard proposed by the National Health Standards Committee Committee on Radiological Health standards.
This standard was drafted. Chinese Center for Disease Control and Prevention Radiation Protection and Nuclear Safety Medical Center, Shanghai Center for Disease Control and Prevention, Canton
Western Disease Prevention and Control Center.
The main drafters of this standard. Yue Bao Rong, Fan Yaohua, Wei Ke Road, Xu Hui, Gao Linfeng, Xie Ping, Wang Jianchao, Liu Lan Tao.
Quality control of mammography radiography system
Testing specifications
1 Scope
This standard specifies the requirements and methods of quality control testing of mammographic X-ray film photography system.
This standard applies to breast X-ray film photography system quality control testing.
2 Terms and definitions
The following terms and definitions apply to this document.
2.1
Acceptance test acceptancetest
X-ray diagnostic equipment installed or equipment major repairs, in order to identify its performance indicators meet the agreed value of the quality control
System testing.
2.2
Status detection statustest
X-ray diagnostic equipment in operation, in order to evaluate its performance indicators meet the relevant standards and requirements of the regular quality control
Detection.
2.3
Stability check constancytest
In order to determine whether the change of the value obtained by the X-ray diagnostic apparatus under a given condition with respect to an initial state meets the control criterion
The regular quality control testing.
2.4
Baseline value baselinevalue
Reference value for equipment performance parameters. The baseline value, or the value given by the appropriate standard, is usually established from the value obtained by acceptance testing.
2.5
Image receiver imagereceptor
Equipment for the direct conversion of incident X-rays into visible images, or to devices that require further transformation to become visible
The middle form. Such as film cassettes, IP panels or flat panel detectors.
2.6
Automatic Exposure Control automaticexposurecontrol; AEC
In the X-ray generating device, one or several loading factors are automatically controlled in order to obtain the desired amount of exposure at the preselected location
Method of operation.
2.7
High contrast resolution highcontrastresolution
Spatial resolution spatialresolution
Under certain conditions, the line pair group of the smallest group of space frequencies that can be distinguished by eyesight in a particular line pair test card image has a unit of lp/mm.
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