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JJF 1889-2020 PDF English

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JJF 1889-2020: Calibration Specification for Medical Hard Copy Cameras
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JJF 1889-2020English419 Add to Cart 4 days [Need to translate] Calibration Specification for Medical Hard Copy Cameras

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Basic data

Standard ID JJF 1889-2020 (JJF1889-2020)
Description (Translated English) Calibration Specification for Medical Hard Copy Cameras
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A60
Classification of International Standard 17.180
Word Count Estimation 18,142
Date of Issue 2020-11-26
Date of Implementation 2021-05-26
Quoted Standard JJF 1032-2005; GB/T 17006.3-2000; GB/T 17006.6-2003; GB/T 34988-2017; HG/T 4127-2017; YY/T 0610-2007; IEC 61223-2-4-1994; IEC TR 60788-2004; SMPTE RP-133-1991
Regulation (derived from) Announcement No. 57 (2020) of the State Administration for Market Regulation
Issuing agency(ies) State Administration for Market Regulation
Summary This standard applies to the calibration of medical hardcopy cameras (also called "medical film printers"), including dry laser cameras and thermal film printers.

JJF 1889-2020: Calibration Specification for Medical Hard Copy Cameras


---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.
Calibration Specification for Medical Hard Copy Cameras National Metrology Technical Specifications of the People's Republic of China Calibration specification for medical hardcopy cameras 2020-11-26 release 2021-05-26 implementation Issued by the State Administration for Market Regulation Medical hard copy camera Calibration specification Focal point: National Medical Metrology Technical Committee Main drafting unit: China Institute of Metrology Shandong Institute of Metrology Participated in the drafting unit: Hebei Provincial People's Hospital Carestream (Shanghai) Medical Equipment Co:, Ltd: Agfa Medical System Equipment (Shanghai) Co:, Ltd: This specification entrusts the National Medical Metrology Technical Committee to interpret The main drafters of this specification: Zhang Pu (China Institute of Metrology) Li Chengwei (China Institute of Metrology) Ding Qiang (Shandong Institute of Metrology) Participating drafters: Baoyunfeng (Hebei Provincial People's Hospital) Liu Zilong (China Institute of Metrology) Li Guodong [Reco (Shanghai) Medical Equipment Co:, Ltd:] Chen Bin [Agfa Medical System Equipment (Shanghai) Co:, Ltd:]

table of Contents

Introduction (Ⅱ) 1 scope (1) 2 Reference documents (1) 3 Terms and measurement units (1) 3:1 Medical dry film (1) 3:2 Hardcopy camera (1) 3:3 Grayscale(1) 3:4 Film density (2) 3:5 Grayscale reproducibility (2) 3:6 Basic film (2) 3:7 Test film (2) 3:8 Image distortion (2) 3:9 Film viewer (2) 4 Overview (2) 5 Measurement characteristics (2) 5:1 Grayscale reproducibility (2) 5:2 Image distortion (2) 6 Calibration conditions (2) 6:1 Environmental conditions (2) 6:2 Measurement standards and other equipment (3) 7 Calibration items and calibration methods (3) 7:1 Appearance and functional inspection (3) 7:2 Grayscale reproducibility (3) 7:3 Image distortion (3) 8 Calibration result expression (5) 8:1 Calibration record (5) 8:2 Processing of calibration results (5) 9 Recalibration interval (6) Appendix A Format of Original Record (Recommended) for Calibration of Medical Hardcopy Cameras (7) Appendix B Internal page of calibration certificate (recommended) format (8) Appendix C Example of Uncertainty Evaluation of Gray Scale Reproducibility Calibration (10) Appendix D Example of Uncertainty Evaluation of Image Distortion Calibration (12)

Introduction

JJF 1071-2010 "Rules for the Compilation of National Metrology and Calibration Specifications", JJF 1001-2011 "General Metrology Terms and Definition" and JJF 1059:1-2012 "Evaluation and Expression of Measurement Uncertainty" together constitute the support for the formulation of this specification The basic series of documents: This specification is released for the first time: Calibration specification for medical hardcopy cameras

1 Scope

This specification applies to the calibration of medical hard copy cameras (also called "medical film printers"), including dry lasers Optical camera and thermal film printer:

2 Reference documents

This specification refers to the following documents: JJF 1032-2005 Terms and Definitions of Optical Radiation Metrology GB/T 17006:3-2000 Evaluation and routine tests in medical imaging departments Part 2-2: X-ray photography Shadow cassette and film changer screen-film contact and screen-cassette assembly relative sensitivity stability test GB/T 17006:6-2003 Evaluation and Routine Tests in Medical Imaging Department Part 2-4: Hard Copy Photos Camera stability test GB/T 34988-2017 Information Technology General Specification for Toner Cartridges for Monochrome Laser Printers HG/T 4127-2017 medical dry film YY/T 0610-2007 General technical conditions for medical imaging photo observation equipment IEC 61223-2-4::1994 Evaluation and routine testing in medical imaging departments Part 2-4: Hard copy photography Machine stability test (Evaluationandroutinetestinginmedicalimagingdepartments-Part 2-4: Constancytests-Hardcopycameras) IEC TR60788:2004 Medical electrical equipment definition term glossary (Medicalelectrical equipment-Glossaryofdefinedterms) SMPTERP-133:1991 TV monitor and screenshot recording camera medical diagnostic imaging test mode specification Fan (Specificationsformedicaldiagnosticimagingtestpatternfortelevisionmonitors) For dated reference documents, only the dated version applies to this specification; for undated references The latest version (including all amendments) is applicable to this specification:

3 Terms and units of measurement

3:1 Medical dryfilm medicaldryfilm Contains medical dry laser film (consisting of polyester film coated with silver salt and protective layer) and medical dry thermal film (Composed of a polyester film base, a silver-containing heat-sensitive layer and a protective layer), it can be used as a diagnostic basis without the use of a developer: Medical imaging (CT, MRI, CR, DR, etc:) records: Note: "Medical dry film" is referred to as "film" in this specification: 3:2 Hardcopy camera hardcopycamera A device that uses the input signal provided by the imaging system to produce an indelible image on the film: 3:3 grayscale The visibility of brightness differences between adjacent grayscale blocks: ...

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