YY/T 1766.3-2023Image quality evaluation methods for X-ray computed tomography equipment - Part 3: Performance evaluation of dual-energy imaging and spectral applications (English PDF)
X射线计算机体层摄影设备图像质量评价方法 第3部分：双能量成像与能谱应用性能评价
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Issued by
NMPA
Level / Type
Industry · Recommended
Issue date
June 20, 2023
Implementation date
January 1, 2025
Scope
YY/T 1766.3-2023 is the English-translated version of X射线计算机体层摄影设备图像质量评价方法 第3部分：双能量成像与能谱应用性能评价.
YY/T 1766.3-2023 is the Chinese standard "Image quality evaluation methods for X-ray computed tomography equipment - Part 3: Performance evaluation of dual-energy imaging and spectral applications".
Its scope clause reads: This document specifies the dual-energy imaging and energy spectrum applications of X-ray computed tomography equipment (hereinafter referred to as CT scanning equipment) Performance evaluation methods.
This document applies to whole-body and dedicated CT scanning devices, including CT scanning devices that provide image data for radiotherapy planning, but does not include Including oral CT scanning devices or angiography and mobile C-arm equipment with three-dimensional imaging capabilities. Its clauses include normative reference documents; terms and definitions.
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Document preview — YY/T 1766.3-2023
National Standard of the People's Republic of China
- ICS
- 11.040.50
- Classification
- C43
Issued by: National Medical Products Administration
Contents
- Preface
- Introduction
- 1 Scope
- 2 Normative reference documents
- 3 Terms and Definitions
- 4 Typical imaging conditions of CT dual-energy imaging
- 5 Dose level evaluation method of CT dual-energy imaging
- 5.1 Test device
- 5.2 Test conditions
- 5.3 Test principle
- 5.4 Test method
- 5.5 Result expression
- 6 Conventional image performance evaluation methods for CT dual-energy imaging
- 6.1 Noise amplitude, average CT value and uniformity
- 6.2 XY plane modulation transfer function (MTF)
- 6.3 Z-axis MTF
- 6.4 Reconstructing slice thickness
- 6.5 Low contrast resolution
- 7 Energy spectrum image performance evaluation method for CT dual-energy imaging
- 7.1 Evaluation of material separation performance
- 7.2 Quantitative performance evaluation of substances
- 8 Performance evaluation methods applicable to CT dual-energy imaging and energy spectrum applications
- 8.1 Overview
- 8.2 CT dual-energy imaging that provides high-energy images and low-energy images
- 8.3 Providing CT dual-energy imaging for routine diagnostic images
- 8.4 CT dual-energy imaging that provides CT energy spectrum images
- 8.5 Post-processing software for energy spectrum applications
- 8.6 Evaluation methods applicable to CT dual-energy imaging and energy spectrum applications
- Appendix A (informative) Implementation methods of CT dual-energy imaging technology
- Appendix B (informative) Physical properties of reference materials and X-ray interaction
- Appendix C (informative) Image type generation principles and evaluation examples of common CT dual-energy imaging
- Appendix D (informative) Relevant standards and research materials
1 Scope
This document specifies the dual-energy imaging and energy spectrum applications of X-ray computed tomography equipment (hereinafter referred to as CT scanning equipment)
Performance evaluation methods.
This document applies to whole-body and dedicated CT scanning devices, including CT scanning devices that provide image data for radiotherapy planning, but does not include
Including oral CT scanning devices or angiography and mobile C-arm equipment with three-dimensional imaging capabilities.
2 Normative reference documents
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations
For referenced documents without dates, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document.
document.
GB 9706.244-2020 Medical electrical equipment Part 2-44.Basic safety and basic performance of X-ray computed tomography equipment
Special requirements
GB/T 10149 Medical X-ray equipment terms and symbols
GB/T 19042.5-2022 Evaluation and routine testing of medical imaging departments Part 3-5.X-ray computed tomography equipment
Image performance acceptance test and stability test
YY/T 1766.1-2021 X-ray computed tomography equipment image quality evaluation method Part 1.Modulation transfer function evaluation
YY/T 1766.2-2021 Image quality evaluation method for X-ray computed tomography equipment Part 2.Low contrast resolution evaluate
3 Terms and definitions
The following terms and definitions as defined in GB/T 10149, GB 9706.244-2020, GB/T 19042.5-2022 apply to this document.
3.1
An imaging method that uses a CT scanning device to obtain data corresponding to a single energy spectrum for image reconstruction and processing.
Note 1.The “energy spectrum” here refers to the energy distribution in the traditional physics sense.
Note 2.Usually based on a single tube voltage, single filtering, energy integrating detector.
Note 3.Imaging with conventional CT scanning devices is usually single-energy imaging.
3.2 CT dual energy imagingdualenergyCTimaging
Use a CT scanning device to obtain data corresponding to two energy spectra in a dual-energy imaging process for imaging reconstruction and processing.
Way.
Note 1.The “energy spectrum” here refers to the energy distribution in the traditional physics sense.
Note 2.Different energy spectrum data can be generated and acquired through technology based on ray sources, filtering, and detectors. The current technology implementation method of CT dual-energy imaging […]
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 34 pages — is available in the English PDF.
Referenced standards
Normative references
- GB 9706.244-2020Medical electrical equipment - Part 2-44: Particular requirements for the basic safety and essential performance of X-ray equipment for computed tomography
- GB/T 10149Terminology and symbol for medical X-ray equipment
- GB/T 19042.5-2022Evaluation and routine testing in medical imaging departments - Part 3-5: X-ray computed tomography equipment imaging performance acceptance test and constancy test
- YY/T 1766.1-2021Image quality evaluation methods for computed tomography system - Part 1: Modulation transfer function evaluation
- YY/T 1766.2-2021Image quality evaluation methods for computed tomography system - Part 2: Low contrast resolution evaluation
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Related Standards
GB 9706.244-2020 — Medical electrical equipment - Part 2-44: Particular requirements for the basic safety and essential performance of X-ray equipment for computed tomography
GB/T 10149-1988 — Terminology and symbol for medical X-ray equipment
GB/T 19042.5-2022 — Evaluation and routine testing in medical imaging departments - Part 3-5: X-ray computed tomography equipment imaging performance acceptance test and constancy test
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