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WS 520-2017 PDF English

Std ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status
WS 520-2017	English	519	Add to Cart	3 days [Need to translate]	Specification for testing of quality control in computed radiography (CR)	Obsolete

Standard similar to WS 520-2017

GBZ 130 | GBZ/T 250 | GBZ/T 201.1 | WS 523 | WS/T 519 | WS 519 |

Basic data

Standard ID	WS 520-2017 (WS520-2017)
Description (Translated English)	Specification for testing of quality control in computed radiography (CR)
Sector / Industry	Health Industry Standard
Classification of Chinese Standard	C57
Classification of International Standard	13.100
Word Count Estimation	13,164
Date of Issue	2017-04-10
Date of Implementation	2017-10-01
Older Standard (superseded by this standard)	GBZ 187-2007
Quoted Standard	WS 76
Issuing agency(ies)	National Health and Family Planning Commission of the People's Republic of China
Summary	This standard specifies the computer X-ray photography (CR) quality control testing requirements, test items and methods. This standard is applicable to the quality control of medical computer X-ray photography (CR). This standard does not apply to the quality control of mammography and dental special computer X-ray photography.

WS 520-2017: Specification for testing of quality control in computed radiography (CR)

---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 computed radiography (CR) ICS 13.100 C57 People's Republic of China health industry standards Replaces GBZ 187-2007 Computer X-ray photography (CR) quality control Testing specifications 2017-04-10 released 2017-10-01 implementation People's Republic of China National Health and Family Planning Commission released Directory Preface Ⅰ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 quality control testing of the general requirements 2 5 quality control test items and technical requirements 2 6 special test items detection methods and evaluation 2 Appendix A (Normative) Quality Control Test Items and Technical Requirements 5 Appendix B (Informative) Four production plant CR system IP technical requirements Example 7 Appendix C (informative) CR system-specific test equipment and equipment needed 9 Reference 10

Foreword

This standard Chapter 4, 5.1 ~ 5.4,5.7,5.9 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 187-2007 "Computer X-ray Photography (CR) Quality Control Test Specification." This standard compared with GBZ 187-2007, the main technical changes are as follows. --- Increasing the scope of Chapter 1 This standard does not apply to breast and dental computer X-ray quality control testing; --- Removed Chapter 2 of all the original reference standards, only the latest revision of which WS 76 as the only cited documents; --- Modify the contents of Chapter 4, 4.1 ~ 4.3; --- Modify Chapter 5 of the contents of 5.1 to 5.5; --- Modify the sixth chapter 6.2, 6.3, 6.4, 6.6 and 6.7 part of the content; --- Removed 6.10 in Chapter 6 of the contents of the grid effect and Appendix A in Table A.2 Table C.1 in Appendix C and the relevant grid Content; --- Removed Chapter 6 6.11IP throughput content and the corresponding Appendix A in Table A.2 content; --- Modify the contents of Table A.1 in Appendix A; --- Amendment of the contents of Table A.2 in Appendix A, respectively, to delete the state detection of the laser beam function, IP erase completely, the grid effect Should and IP throughput, increase the stability of the detection of IP erasure completeness; --- Modify Appendix B in Table B.1 Agfa (Agfa) related content, replaced by the company's current relevant parameters for the current use; In Table B.1 will be four manufacturers of IP response to air kerma (K response) formula instead of its response to the amount of radiation (R response) calculation formula; --- Added Appendix B B.2 four manufacturers recommended CR system IP specific technical requirements. This standard was drafted. Chinese Center for Disease Control and Prevention Radiation Protection and Nuclear Safety Medical Center, Capital Medical University, Beijing Tongren Medical Hospital, Beijing Center for Disease Control and Prevention. The main drafters of this standard. Wei Ke Road, Yue Bao Rong, Wang Jianchao, Niu Yan Tao, Liu Lan Tao, Xu Hui, Fan Yaohua, Lou Yun, Liao Jinghui, Ou Xiangming. Computer X-ray photography (CR) quality control Testing specifications

1 Scope

This standard specifies the computer X-ray photography (CR) quality control testing requirements, test items and methods. This standard applies to the medical computer X-ray photography (CR) quality control testing. This standard does not apply to breast and dental computer X-ray photography quality control testing.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. WS 76 medical routine X-ray diagnostic equipment quality control testing specifications

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Computerized radiography (CR) system computedradiography (CR) system A reusable imaging plate is used instead of the intensifier screen - the film is exposed as a carrier by X-ray and the laser-scanned plate is exposed Latent image information, through the optical system to collect and enlarge, computer acquisition, digital imaging display of an X-ray equipment. simple CR system. 3.2 Imaging plate imaging plate; IP An X-ray area detector made of an X-ray storage luminescent material, such as barium fluorohalide, is used. X-ray forms one in IP An electron-hole pair latent image that recombines and fluoresces under the excitation of a red laser scan, the intensity of which is proportional to the intensity of the X-ray. The CR system's laser scanning readout reads out the IP's electronic latent image and displays its digitized image on the CR system's display. 3.3 Dose Indications doseindicators The specific finger provided by the manufacturer of the CR system to reflect the average kerma of incident air on the imaging plate during image acquisition Show, can be used to check the technical parameters of the CR system is appropriate to verify the correct photography. 3.4 Aliasing aliasing Some high-frequency components that exceed the limits of spatial resolution may return to low-frequency components, creating a special Artifacts.