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JJG 961-2017 English PDF

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JJG 961-2017: Medical Diagnostic X-ray Radiation Source for Spiral Computed Tomography(CT)
Status: Valid

JJG 961: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
JJG 961-2017English439 Add to Cart 4 days [Need to translate] Medical Diagnostic X-ray Radiation Source for Spiral Computed Tomography(CT) Valid JJG 961-2017
JJG 961-2001English799 Add to Cart 4 days [Need to translate] Verification Regulation of Medical Diagnostical X-ray Radiation Source for Computer Tomography (CT) Obsolete JJG 961-2001

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Basic data

Standard ID JJG 961-2017 (JJG961-2017)
Description (Translated English) Medical Diagnostic X-ray Radiation Source for Spiral Computed Tomography(CT)
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A55
Word Count Estimation 19,192
Date of Issue 2017-11-20
Date of Implementation 2018-05-20
Older Standard (superseded by this standard) JJG 961-2001; JJG 1026-2007
Regulation (derived from) AQSIQ Notice 2017 No. 103
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine

JJG 961-2017: Medical Diagnostic X-ray Radiation Source for Spiral Computed Tomography(CT)

---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.
Medical Diagnostic X-ray Radiation Source for Spiral Computed Tomography(CT) National metrological verification regulations of the People's Republic of China Medical diagnosis spiral computed tomography apparatus (CT) X-ray source Published on.2017-11-20 2018-05-20 Implementation The State Administration of Quality Supervision, Inspection and Quarantine issued Medical diagnosis spiral computed tomography equipment Setup (CT) X-Ray Radiation Source Verification Procedures Replace JJG 961-2001 And JJG 1026-2007 Key units. National Ionizing Radiation Measurement Technical Committee Drafting unit. Beijing Institute of Metrology and Detection GE Healthcare Trade Development (Shanghai) Co., Ltd. Canon Medical Systems (China) Co., Ltd. Shanghai Siemens Medical Devices Co., Ltd Beijing Aerospace Measurement and Testing Technology Institute This procedure entrusts the National Ionizing Radiation Measurement Technical Committee to explain The main drafters of this regulation. Guo Hongtao (Beijing Institute of Metrology and Detection) Qin Sizhan [GE Healthcare Trade Development (Shanghai) Co., Ltd.] Liu Yong [Canon Medical Systems (China) Co., Ltd.] Ma Tianshi (Shanghai Siemens Medical Devices Co., Ltd.) Feng Zhijun (Beijing Aerospace Measurement & Measurement Technology Institute) Participating drafters. Wang Huanning (Beijing Institute of Metrology and Detection) Luo Ye (Beijing Institute of Metrology and Detection)

table of Contents

Introduction (III) 1 Scope (1) 2 References (1) 3 Terms and units of measure (1) 3.1 Terms (1) 3.2 Units of measurement (4) 4 Overview (4) 5 Metrological performance requirements (4) 5.1 Dose Index (4) 5.2 Uniformity (4) 5.3 Noise Level (5) 5.4 Consistency Between Images (5) 5.5 CT value (5) 5.6 layer thickness (5) 5.7 Spatial Resolution (Rates) (5) 5.8 Low Contrast Resolution (Rates) (5) 6 General technical requirements (6) 7 Measuring Instruments Control (6) 7.1 Verification conditions (6) 7.2 Verification Projects (6) 7.3 Verification Methods (7) 7.4 Processing of verification results (10) 7.5 Certification Period (10) Appendix A Medical Radiology Computed Tomography (CT) X-Ray Radiation Source Verification Record (11) Appendix B Verification Certificate Inner Page Format (12) Appendix C Schematic diagram of the detection of spiral CT phantom (13)

Introduction

This procedure is written in accordance with JJF1002-2010 “Rules for the preparation of national metrological verification regulations”. Compared with JJG 961-2001 and JJG 1026-2007, in addition to editorial changes, this revision of the main technology The changes are as follows. --- Remove the requirement of the original procedure 5.1.1 Weighted CT Dose Index (CTDIw) and retain the volume dose indication Number (CTDIvol) technical requirements. When the nominal ray width is not more than 40mm in the measurement method, the measurement method is not Change. Added measurement method with a nominal ray width greater than 40mm. --- Thickness is only measured under axial scanning conditions. --- Newly installed CT radiation source removes the subjective evaluation of the original procedure, leaving only the measured MTF function curve Evaluation. --- The operating CT radiation source only retains the subjective evaluation of the original procedure ie 5.7.2.2. The previous version of this regulation was issued as follows. ---JJG 961-2001; ---JJG 1026-2007. Medical diagnosis spiral computed tomography apparatus (CT) X-Ray Radiation Source Verification Procedures

1 Scope

This verification procedure is adapted to the newly installed, used, and medically-repaired medical devices that affect imaging performance. Computer tomography apparatus (CT) X-ray radiation source verification.

2 references

This procedure refers to the following documents. JJF1001 Universal Measurement Terms and Definitions JJF1035 Ionizing Radiation Measurement Terms and Definitions GB 9706.18-2006 Medical electrical equipment - Part 2. X-ray computed tomography imaging equipment safety Special requirements GB/T 10149-1988 medical X-ray equipment terms and symbols GB/T 17006.11-2015 Evaluation and routine testing of medical imaging departments - Part 2-6. X-ray meters Computer tomography equipment imaging performance stability test GB/T 19042.5-2006 Evaluation and routine testing of medical imaging departments - Part 3-5. X-ray meters Computer tomography equipment imaging performance acceptance test IEC 60601-2-44.2016 Medical electronic equipment Part 2-44. Computed tomography apparatus X-rays Line Equipment Specific Requirements MedicalElectricalEquipment Part 2-44. ParticularRequirementsfor theBasicSafetyandEssentialPerformanceofX-RayEquipmentforComputedTomo- Graphy IEC 61223-3-5.2004 Evaluation and routine testing of medical images. Part 3-5. Computed tomography equipment X-ray equipment image performance EvaluationandRoutineTestinginMedicalImagingDepart- Ments Part 3-5. AcceptanceTests ImagingPerformanceofComputedTomography X-rayEquipment For dated references, only the dated version applies to this procedure; any undated references The latest version (including all amendments) applies to this procedure.

3 Terms and units of measure

3.1 Terms The terms and definitions defined by JJF1001, JJF1035, and the following apply to this procedure. 3.1.1 dose index doseindex 3.1.1.1 CT Dose Index 100 (CTDI100) Vertical distribution of dose along the body plane from -50 mm to 50 mm for a single axial scan The integral is divided by the product of the number of slice slices N and the nominal slice thickness T.

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