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WS 522-2017 PDF English

Std ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status
WS 522-2017	English	599	Add to Cart	4 days [Need to translate]	Specification for testing of quality control in digital mammography systems	Obsolete

Standard similar to WS 522-2017

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

Basic data

Standard ID	WS 522-2017 (WS522-2017)
Description (Translated English)	Specification for testing of quality control in digital mammography systems
Sector / Industry	Health Industry Standard
Classification of Chinese Standard	C57
Classification of International Standard	13.280
Word Count Estimation	15,160
Date of Issue	2017-04-10
Date of Implementation	2017-10-01
Quoted Standard	WS 518
Issuing agency(ies)	National Health and Family Planning Commission of the People's Republic of China
Summary	This standard specifies the quality control testing requirements, testing items and methods for mammography digital X-ray photography systems. This standard is applicable to the quality control of breast digital X-ray photography (including mammography). This standard does not apply to the quality control of mammography (mammography).

WS 522-2017: Specification for testing of quality control in digital mammography systems

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Specification for testing of quality control in digital mammography systems ICS 13.280 C57 People's Republic of China health industry standards Breast digital X-ray photography system Quality control testing specification 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 Normative references 1 3 Terms and definitions 1 4 quality control testing requirements 2 5 quality control test items and methods 2 Appendix A (Normative) Breast digital X-ray photography system test items and technical requirements 7 Appendix B (informative) Breast average dose calculation 9 Appendix C (informative) quality control testing equipment and utensils required 11 Reference 12

Foreword

This standard 4.1.1 ~ 4.1.4,4.2, Appendix A mandatory content, the rest is recommended content. This standard was drafted in accordance with the rules given in GB/T 1.1-2009. 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. Yue Bao Rong, Xu Hui, Wei Ke Road, Wang Chao, Fan Yaohua, Niu Yan Tao, Liu Lan Tao, Lou Yun. Breast digital X-ray photography system Quality control testing specification

1 Scope

This standard specifies the breast digital X-ray photography system quality control testing requirements, testing items and methods. This standard applies to breast digital radiography (including digital mammography photography) system quality control testing. This standard does not apply to the breast computer X-ray photography (breast CR) 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 518 Breast X-ray film photography system quality control testing specifications

3 Terms and definitions

WS 518 defined and the following terms and definitions apply to this document. 3.1 Contrast detail threshold thresholdcontrastdetails The minimum contrast detail in a given shape and area that can be discerned from a uniform background under the specified measurement conditions, expressed in% Said. 3.2 Artifact artifact Clearly visible image on the image, it does not reflect the internal structure of the object, nor can it be explained by noise or system modulation transfer function. 3.3 The average dose of mammary gland averageglandulardose; AGD Subjects in mammography are subject to uniform compression of the average sucking in the glandular tissues of the breast (excluding skin and adipose tissue) Received dose. 3.4 ROI Pixel regions (circles or rectangles) delimited in the image. Using software tools to provide the average pixel value of the region and standard deviation. 3.5 Pre-processing image pre-processedimage Unprocessed image unprocessedimage After pixel defect correction and Hirano correction of the image, but this image is not after the image processing. 3.6 Mammography digitalbreasttomosynthesis; DBT Digital mammography from a series of low-dose X-ray images taken from different angles to reconstructed tomosynthesis images method.